CN212300518U - Water level alarm based on frequency domain reflection method - Google Patents
Water level alarm based on frequency domain reflection method Download PDFInfo
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- CN212300518U CN212300518U CN202021699798.0U CN202021699798U CN212300518U CN 212300518 U CN212300518 U CN 212300518U CN 202021699798 U CN202021699798 U CN 202021699798U CN 212300518 U CN212300518 U CN 212300518U
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Abstract
A water level alarm based on a frequency domain reflection method belongs to the field of water level measurement. The device comprises a pipe cap, an outer pipe, a mounting frame, a pipe head, an internal fixed copper ring mounting frame, a battery, a measuring module, a main control circuit board and a mounting pipe, wherein the pipe cap and the pipe head are connected with the outer pipe through a waterproof thread structure; hydroenergy gets into the intraductal liquid level lumen of installation through outer pipe bottom sealing liquid level hole, inlet opening and reaches certain liquid level, and the measuring module who passes through on the way detects the water level in proper order and sends out alarm detection signal, and detection signal transmits the external world through main control circuit board. The water level monitoring is realized by utilizing an advanced FDR frequency domain reflection principle, the monitoring precision is high, the service life of the alarm can be effectively prolonged because the alarm is not contacted with water, and the long-term precision stability of the alarm is kept; the alarm establishes a data transmission channel with the outside through 485 communication, does not need people to observe to the scene, and can also transmit water level alarm information to the assigned position.
Description
Technical Field
The invention relates to a water level alarm based on a frequency domain reflection method, in particular to a water level alarm for measuring water level by using the frequency domain reflection method, and belongs to the field of water level measurement.
Background
The water level alarm device is a device for water level alarm in hydraulic engineering. According to the flood law and the flood disaster characteristics, various countermeasures and measures are researched and adopted to prevent or alleviate the flood disaster and guarantee the water conservancy work of social and economic development. The basic work content of the method comprises flood control planning, flood control construction, management and application of flood control projects, flood control (ice control), flood scheduling and arrangement, post-disaster recovery and reconstruction and the like. Flood control measures include both engineering measures and non-engineering measures. Flood control is also an important professional discipline of water conservancy science, so hydraulic engineering water level alarm device is essential.
The existing water level detection method mostly adopts a field observation method, and once the water level is too high or too low, the water level cannot be found in time; and some water conservancy and hydropower engineering's water level alarm device now have complicated structure, and the installation is loaded down with trivial details, and it is lower to detect the accuracy, and the cost is higher, is not fit for large-batch use.
Disclosure of Invention
Aiming at the defects that the observation of the water level ruler needs manual on-site observation, the accuracy is poor, and the alarm function is not available, the invention provides the water level alarm based on the frequency domain reflection method.
The invention is realized by the following technical scheme: a water level alarm based on a frequency domain reflection method comprises a pipe cap, an outer pipe, a mounting frame, a pipe head, an internal fixing copper ring mounting frame, a battery, a measuring module, a main control circuit board and a mounting pipe, wherein the pipe cap and the pipe head are connected with the outer pipe through waterproof thread structures; the outer tube have outer tube end and seal liquid level hole, the tube head inlet opening has, the installation pipe have the intraductal liquid level lumen of installation, hydroenergy gets into the intraductal liquid level lumen of installation through outer tube end and seals liquid level hole, inlet opening and reaches certain liquid level, the measuring module of passing through on the way detects the water level in proper order and sends out alarm detection signal, detection signal transmits the external world through main control circuit board.
The pipe cap is provided with a wiring port and a button, the wiring port and the button are both arranged on the pipe cap, the wiring port is connected with the pipe cap through a waterproof thread structure, an electric wire is connected out from the wiring port, waterproof glue is coated on the place where the electric wire is contacted with the wiring port, the button is connected with the pipe cap through a waterproof soft structure, and the button is electrically connected with the battery and the main control circuit board; the waterproof soft structure is a silica gel sheet connected with the pipe cap through waterproof glue, and the outer part of the silica gel sheet is connected with the button.
The waterproof thread structure is connected by matching tapered threads or pipe threads with magic ropes and/or thread sealing tapes and/or thread sealing glue.
The outer tube is provided with an outer tube body, a threaded end, an outer tube bottom seal, a limiting mounting hole, an inner tangent point normal plane, an outer tube bottom seal liquid level hole, waterproof glue, an upper threaded end, a top seal, an upper limiting mounting hole and a wiring hole, wherein the threaded end is arranged at the lower end part of the outer tube body, the outer tube bottom seal is arranged on the diameter section of the lower end of the outer tube body and seals the bottom of the outer tube, the limiting mounting hole is arranged on the inner side surface of the outer tube bottom seal, the inner side cylindrical surface of the limiting mounting hole is tangent to the inner side of the threaded end, the outer tube bottom seal liquid level hole is formed in the outer tube bottom seal, the axis of the outer tube bottom seal liquid level hole is superposed with the axis of the limiting mounting hole, the inner side cylindrical surface of the limiting mounting hole is coated with the waterproof glue, the upper threaded end is arranged at the upper end part of the outer tube, the upper end of the outer tube is provided, the top seal of the outer pipe is provided with a wiring hole in the area of the non-upper limit mounting hole.
The tube head have inlet opening and waterproof helicitic texture, the inlet opening equipartition in the bottom of tube head, the filter screen is installed to the inlet opening inboard.
The internal fixation copper ring mounting bracket have main part board, stand, mounting hole, copper ring bracing piece and copper ring dog, the main part board on be connected with a plurality of stands, it has the mounting hole to open on the main part board, be connected with four copper ring bracing pieces on the main part board, the side at the main part board is connected to the copper ring dog, is located the centre of two copper ring bracing pieces of homonymy, the stand top surface on open and to have the circuit board mounting hole, the copper ring bracing piece on have the bracing piece and keep off the face, the copper ring dog on have the dog and keep off the face.
The measuring module is provided with an internal fixed copper ring mounting rack, an acquisition circuit board and a copper ring; the main control circuit board is arranged on the main control circuit board mounting frame through a circuit board mounting hole on the internal fixed copper ring mounting frame; the collecting circuit board is arranged on the internal fixed copper ring mounting rack through a circuit board mounting hole formed on the top surface of the upright post on the internal fixed copper ring mounting rack; the two copper rings are respectively arranged on two copper ring supporting rods which are opposite to each other on the inner fixed copper ring mounting rack; the acquisition circuit board is provided with an acquisition circuit; the installation pipe on open and to have the fixed mounting hole, the internal fixation copper ring mounting bracket links together through the fixed mounting hole of mounting hole and installation pipe, a plurality of measuring module distribute along the axis direction of installation pipe.
The main control circuit board is provided with a control circuit and a power supply circuit, the control circuit is provided with a single chip microcomputer, and the single chip microcomputer transmits detection information to the outside through communication; the power supply circuit is connected with the battery and provides power for the control circuit, the button, the light emitting diode and the humidity measuring module.
The installation pipe have installation outer pipe of pipe, installation intraductal inlayer liquid level pipe wall, installation intraductal inlayer liquid level pipe chamber, installation pipe bottom seal and fixed mounting hole, the installation pipe be the double-deck pipe, installation outer pipe of pipe and installation intraductal inlayer liquid level pipe wall link together through installation pipe bottom seal, the intraductal inlayer liquid level pipe chamber of installation of the inside formation of installation intraductal liquid level pipe wall, the fixed mounting hole is opened on the outer pipe of installation pipe.
The pipe cap, the pipe body, the internal fixation copper ring mounting rack and the mounting pipe are made of wave-transparent materials, including but not limited to epoxy resin.
The invention has the beneficial effects that the advanced FDR frequency domain reflection principle is utilized, the water level monitoring is realized, the monitoring precision is high, the service life of the alarm can be effectively prolonged when the alarm is not contacted with water, and the long-term precision stability of the alarm is kept; the alarm establishes a data transmission channel with the outside through 485 communication, does not need to be observed by people on site, and can also transmit water level alarm information to a specified position; the structural design of the outer pipe and the end part of the mounting pipe can play an effective waterproof role; the copper ring can be firmly fixed by the design of the internal fixing copper ring mounting frame, the copper ring cannot shake, and the detection precision and the detection result cannot be influenced; due to the arrangement of the upright posts and the circuit board mounting holes, the circuit board can be mounted in the copper ring, the internal space of the sensor is saved, circuit wiring can be reduced, and internal electric wiring is simple and clear; the arrangement of the blocking surface of the supporting rod and the blocking surface of the stop block limits the position of the copper ring, so that the copper ring is not easy to shake; the design of the acquisition circuit ensures the accuracy of the signal acquisition of the sensor, and data loss is avoided; the control circuit is designed to ensure the reasonability of the sensor processing signals and the accuracy of data.
Drawings
The axial cross section of the threaded end 202 in the normal direction at the tangent point where the inner cylindrical surface of the limit mounting hole 204 is tangent to the inner cylindrical surface of the threaded end 202 is an inscribed point normal plane 205.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is an enlarged view of FIG. 2 taken at circle;
FIG. 4 is a schematic structural view of the outer tube of the present invention with an uncut portion removed;
FIG. 5 is a partial full sectional view on an inscribed point normal plane 205 of the present invention;
FIG. 6 is a cross-sectional view taken along line A of FIG. 4;
FIG. 7 is a partial cross-sectional view of the upper end of the outer tube of the present invention;
FIG. 8 is a schematic view of a tube head according to the present invention;
FIG. 9 is a schematic structural view of the internally fixed copper ring mounting bracket of the present invention;
FIG. 10 is a schematic diagram of a humidity measurement module according to the present invention;
FIG. 11 is a power supply circuit diagram of the present invention;
FIG. 12 is a control circuit diagram of the present invention;
fig. 13 is a diagram of an acquisition circuit of the present invention.
In the figure, 1, a pipe cap, 101, a wiring port, 102, a button, 103, a light emitting diode, 2, an outer pipe, 201, an outer pipe body, 202, a threaded end, 203, an outer pipe bottom seal, 204, a limit mounting hole, 205, an inscribed point normal plane, 206, an outer pipe bottom seal liquid level hole, 207, waterproof glue, 208, an upper threaded end, 209, a top seal, 210, an upper limit mounting hole, 211, a wiring hole, 3, a mounting rack, 4, a pipe head, 401, a water inlet hole, 402, a waterproof threaded structure, 5, an internal fixing copper ring mounting rack, 501, a main body plate, 502, a column, 50201, a circuit board mounting hole, 503, a mounting hole, 504, a copper ring supporting rod, 50401, a supporting rod baffle surface, 505, a copper ring baffle surface, 50501, a baffle surface, 6, a battery, 7, a measuring module, 701, a collecting circuit board, 702, a copper ring, 8, a main control circuit board, 9, a mounting pipe, an outer layer 901, a mounting pipe, The installation intraductal liquid level pipe wall, 903, installation intraductal liquid level lumen, 904, installation pipe bottom seal, 905, fixed mounting hole.
Detailed Description
A water level alarm based on a frequency domain reflection method comprises a pipe cap 1, an outer pipe 2, a mounting rack 3, a pipe head 4, an internal fixing copper ring mounting rack 5, a battery 6, a measuring module 7, a main control circuit board 8 and a mounting pipe 9, wherein the pipe cap 1 and the pipe head 4 are connected with the outer pipe 2 through a waterproof thread structure, the mounting rack 3 is fixedly installed outside the outer pipe 2, the battery 6, the measuring module 7 and the main control circuit board 8 are fixedly connected onto the mounting pipe 9 through the internal fixing copper ring mounting rack 5, the mounting pipe 9 is fixedly installed inside the outer pipe 2, the humidity measuring module 7, the main control circuit board 8 and the battery 6 are electrically connected, and the measuring module 7 is connected with the main control circuit board 8 through a data line; outer tube 2 have outer tube end and seal liquid level hole 206, tube head 4 inlet opening 401 has, installation pipe 9 have installation intraductal layer liquid level lumen 903, hydroenergy gets into installation intraductal layer liquid level lumen 903 through outer tube end and seals liquid level hole 206, inlet opening 401 and reaches certain liquid level, measuring module 7 of passing through on the way detects the water level in proper order and sends out alarm detected signal, detected signal transmits the external world through main control circuit board 8.
The pipe cap 1 is provided with a wiring port 101 and a button 102, the wiring port 101 and the button 102 are both arranged on the pipe cap 1, the wiring port 101 is connected with the pipe cap 1 through a waterproof thread structure, an electric wire is connected out from the wiring port 101, waterproof glue is coated on the contact part of the electric wire and the wiring port, the button 102 is connected with the pipe cap 1 through a waterproof soft structure, and the button 102 is electrically connected with the battery 6 and the main control circuit board 8; the waterproof soft structure is a silica gel sheet connected with the pipe cap 1 through waterproof glue, and the outer part of the silica gel sheet is connected with the button 102.
The waterproof thread structure is connected by matching tapered threads or pipe threads with magic ropes and/or thread sealing tapes and/or thread sealing glue.
The outer pipe 2 is provided with an outer pipe body 201, a threaded end 202, an outer pipe bottom seal 203, a limiting installation hole 204, an inner tangent point normal plane 205, an outer pipe bottom seal liquid level hole 206, waterproof glue 207, an upper threaded end 208, a top seal 209, an upper limiting installation hole 210 and a wire walking hole 211, wherein the threaded end 202 is arranged at the lower end part of the outer pipe body 201, the outer pipe bottom seal 203 is arranged on the lower end diameter section of the outer pipe body 201 and seals the bottom of the outer pipe 2, the limiting installation hole 204 is arranged on the inner side surface of the outer pipe bottom seal 203, the inner cylindrical surface of the limiting installation hole 204 is tangent to the inner cylindrical surface of the threaded end 202, the outer pipe bottom seal liquid level hole 206 is arranged on the outer pipe bottom seal 203, the axis of the outer pipe bottom seal liquid level hole 206 is coincident with the axis of the limiting installation hole 204, the inner cylindrical surface of the limiting installation hole 204 is coated with the waterproof glue 207, the upper threaded end 208 is arranged at the, An upper limit mounting hole 210, the axis of the upper limit mounting hole 210 is the same as the axis of the limit mounting hole 204, and a wiring hole 211 is arranged in the region of the top seal 209 of the outer tube 2, which is not the upper limit mounting hole 210.
Tube head 4 have inlet opening 401 and waterproof helicitic texture 402, inlet opening 401 equipartition in the bottom of tube head 4, the filter screen is installed to inlet opening 401 inboard.
The internal fixation copper ring mounting frame 5 is provided with a main body plate 501, columns 502, mounting holes 503, copper ring supporting rods 504 and a copper ring stopper 505, the main body plate 501 is connected with a plurality of columns 502, the main body plate 501 is provided with the mounting holes 503, the main body plate 501 is connected with four copper ring supporting rods 504, the copper ring stopper 505 is connected to the side surface of the main body plate 501 and located in the middle of the two copper ring supporting rods 504 on the same side, the top surface of the column 502 is provided with a circuit board mounting hole 50201, the copper ring supporting rods 504 are provided with supporting rod blocking surfaces 50401, and the copper ring stopper 505 is provided with a stopper blocking surface 50501.
The measuring module 7 is provided with an internal fixed copper ring mounting rack 5, an acquisition circuit board 701 and a copper ring 702; the main control circuit board 8 is mounted on the main control circuit board mounting frame 5 through a circuit board mounting hole 50201 on the internal fixing copper ring mounting frame 5; the acquisition circuit board 701 is mounted on the internal fixed copper ring mounting rack 5 through a circuit board mounting hole 50201 formed in the top surface of the upright column 502 on the internal fixed copper ring mounting rack 5; two copper rings 702 are respectively arranged on two copper ring supporting rods 504 which are opposite to each other on the internal fixed copper ring mounting rack 5; the acquisition circuit board 701 is provided with an acquisition circuit; the installation pipe 9 is provided with a fixed installation hole 905, the internal fixed copper ring installation frame 5 is connected with the fixed installation hole 905 of the installation pipe 3 through the installation hole 503, and the plurality of measurement modules 7 are distributed along the axial direction of the installation pipe 9.
The main control circuit board 8 is provided with a control circuit and a power supply circuit, the control circuit is provided with a single chip microcomputer, and the single chip microcomputer transmits detection information to the outside through 485 communication; the power supply circuit is connected with the battery 6 and provides power for the control circuit, the button 102, the light emitting diode 103 and the humidity measuring module 7.
The mounting pipe 9 is provided with a mounting pipe outer layer pipe 901, a mounting pipe inner layer liquid level pipe wall 902, a mounting pipe inner layer liquid level pipe cavity 903, a mounting pipe bottom seal 904 and a fixed mounting hole 905, the mounting pipe 9 is a double-layer pipe, the mounting pipe outer layer pipe 901 and the mounting pipe inner layer liquid level pipe wall 902 are connected together through the mounting pipe bottom seal 904, the mounting pipe inner layer liquid level pipe cavity 903 is formed inside the mounting pipe inner layer liquid level pipe wall 902, and the fixed mounting hole 905 is formed in the mounting pipe outer layer pipe 901.
The pipe cap 1, the pipe body 2, the internal fixing copper ring mounting rack 5 and the mounting pipe 9 are made of wave-transparent materials, including but not limited to epoxy resin.
The use method of the water level alarm comprises the following steps: firstly, fixing a mounting frame 3 of the device at a selected position by using a tool, and then fixedly mounting a pipe body 2 on the mounting frame 3; after installation, the electrical cord is connected and button 102 is pressed to activate the water level alarm.
When the measuring module of the water level alarm is assembled, the collecting circuit board 701 is required to be installed on the stand column 502 of the internal fixing copper ring installation frame 5 through the circuit board installation hole 50201, then the copper ring 702 is installed, after the installation, the position of the copper ring 702 is adjusted, the copper ring supporting rod 504 is ensured to be supported in the diameter direction of the copper ring 702, the upper top surface of the copper ring 702 is ensured to be attached to the supporting rod blocking surface 50401, or the lower top surface of the copper ring 702 is attached to the blocking block blocking surface 50501, the distance between two adjacent top surfaces of the two copper rings 702 is measured and calculated, and the distance between the two copper rings 702 meets the requirement.
This water level alarm's working process does, water gets into from the inlet opening 401 of tube head 4, seal liquid level hole 206 entering installation pipe inlayer liquid level lumen 903 at the bottom of via the outer tube, because the linker principle, the liquid level in the installation pipe inlayer liquid level lumen 903 in the water level alarm keeps unanimous with the liquid level in outside waters, when rising to the position that first measuring module 7 can measure to the water level, because measuring area has the water to get into, so measuring area's dielectric constant changes, measuring module 7 passes through FDR frequency domain reflection principle, transmit electromagnetic pulse, the change that utilizes electromagnetic wave to propagate the frequency in the medium detects dielectric constant, thereby the monitoring water level, reach the function of monitoring water level and warning.
The acquisition circuit of the measuring module of the water level alarm is powered by the power supply circuit, and acquired data are transmitted to the control circuit through frequency division and are processed by the control circuit.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
It will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments described above without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims.
Claims (10)
1. The utility model provides a water level alarm based on frequency domain reflectometry which characterized in that: the device comprises a pipe cap, an outer pipe, a mounting frame, a pipe head, an internal fixing copper ring mounting frame, a battery, a measuring module, a main control circuit board and a mounting pipe, wherein the pipe cap and the pipe head are connected with the outer pipe through waterproof thread structures; the outer tube have outer tube end and seal liquid level hole, the tube head inlet opening has, the installation pipe have the intraductal liquid level lumen of installation, hydroenergy gets into the intraductal liquid level lumen of installation through outer tube end and seals liquid level hole, inlet opening and reaches certain liquid level, the measuring module of passing through on the way detects the water level in proper order and sends out alarm detection signal, detection signal transmits the external world through main control circuit board.
2. The water level alarm based on the frequency domain reflection method as claimed in claim 1, wherein: the pipe cap is provided with a wiring port and a button, the wiring port and the button are both arranged on the pipe cap, the wiring port is connected with the pipe cap through a waterproof thread structure, an electric wire is connected out from the wiring port, waterproof glue is coated on the place where the electric wire is contacted with the wiring port, the button is connected with the pipe cap through a waterproof soft structure, and the button is electrically connected with the battery and the main control circuit board; the waterproof soft structure is a silica gel sheet connected with the pipe cap through waterproof glue, and the outer part of the silica gel sheet is connected with the button.
3. A water level alarm based on frequency domain reflectometry as claimed in claim 1 or 2 wherein: the waterproof thread structure is connected by matching tapered threads or pipe threads with magic ropes and/or thread sealing tapes and/or thread sealing glue.
4. The water level alarm based on the frequency domain reflection method as claimed in claim 1, wherein: the outer tube is provided with an outer tube body, a threaded end, an outer tube bottom seal, a limiting mounting hole, an inner tangent point normal plane, an outer tube bottom seal liquid level hole, waterproof glue, an upper threaded end, a top seal, an upper limiting mounting hole and a wiring hole, wherein the threaded end is arranged at the lower end part of the outer tube body, the outer tube bottom seal is arranged on the diameter section of the lower end of the outer tube body and seals the bottom of the outer tube, the limiting mounting hole is arranged on the inner side surface of the outer tube bottom seal, the inner side cylindrical surface of the limiting mounting hole is tangent to the inner side of the threaded end, the outer tube bottom seal liquid level hole is formed in the outer tube bottom seal, the axis of the outer tube bottom seal liquid level hole is superposed with the axis of the limiting mounting hole, the inner side cylindrical surface of the limiting mounting hole is coated with the waterproof glue, the upper threaded end is arranged at the upper end part of the outer tube, the upper end of the outer tube is provided, the top seal of the outer pipe is provided with a wiring hole in the area of the non-upper limit mounting hole.
5. The water level alarm based on the frequency domain reflection method as claimed in claim 1, wherein: the tube head have inlet opening and waterproof helicitic texture, the inlet opening equipartition in the bottom of tube head, the filter screen is installed to the inlet opening inboard.
6. The water level alarm based on the frequency domain reflection method as claimed in claim 1, wherein: the internal fixation copper ring mounting bracket have main part board, stand, mounting hole, copper ring bracing piece and copper ring dog, the main part board on be connected with a plurality of stands, it has the mounting hole to open on the main part board, be connected with four copper ring bracing pieces on the main part board, the side at the main part board is connected to the copper ring dog, is located the centre of two copper ring bracing pieces of homonymy, the stand top surface on open and to have the circuit board mounting hole, the copper ring bracing piece on have the bracing piece and keep off the face, the copper ring dog on have the dog and keep off the face.
7. The water level alarm based on the frequency domain reflection method as claimed in claim 1, wherein: the measuring module is provided with an internal fixed copper ring mounting rack, an acquisition circuit board and a copper ring; the main control circuit board is arranged on the main control circuit board mounting frame through a circuit board mounting hole on the internal fixed copper ring mounting frame; the collecting circuit board is arranged on the internal fixed copper ring mounting rack through a circuit board mounting hole formed on the top surface of the upright post on the internal fixed copper ring mounting rack; the two copper rings are respectively arranged on two copper ring supporting rods which are opposite to each other on the inner fixed copper ring mounting rack; the acquisition circuit board is provided with an acquisition circuit; the installation pipe on open and to have the fixed mounting hole, the internal fixation copper ring mounting bracket links together through the fixed mounting hole of mounting hole and installation pipe, a plurality of measuring module distribute along the axis direction of installation pipe.
8. The water level alarm based on the frequency domain reflection method as claimed in claim 1, wherein: the main control circuit board is provided with a control circuit and a power supply circuit, the control circuit is provided with a single chip microcomputer, and the single chip microcomputer transmits detection information to the outside through communication; the power supply circuit is connected with the battery and provides power for the control circuit, the button, the light emitting diode and the humidity measuring module.
9. The water level alarm based on the frequency domain reflection method as claimed in claim 1, wherein: the installation pipe have installation outer pipe of pipe, installation intraductal inlayer liquid level pipe wall, installation intraductal inlayer liquid level pipe chamber, installation pipe bottom seal and fixed mounting hole, the installation pipe be the double-deck pipe, installation outer pipe of pipe and installation intraductal inlayer liquid level pipe wall link together through installation pipe bottom seal, the intraductal inlayer liquid level pipe chamber of installation of the inside formation of installation intraductal liquid level pipe wall, the fixed mounting hole is opened on the outer pipe of installation pipe.
10. The water level alarm based on the frequency domain reflection method as claimed in claim 1, wherein: the pipe cap, the pipe body, the internal fixation copper ring mounting rack and the mounting pipe are made of wave-transparent materials, including but not limited to epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021699798.0U CN212300518U (en) | 2020-08-15 | 2020-08-15 | Water level alarm based on frequency domain reflection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021699798.0U CN212300518U (en) | 2020-08-15 | 2020-08-15 | Water level alarm based on frequency domain reflection method |
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| CN212300518U true CN212300518U (en) | 2021-01-05 |
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| CN202021699798.0U Active CN212300518U (en) | 2020-08-15 | 2020-08-15 | Water level alarm based on frequency domain reflection method |
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