CN113529910A - Intelligent inspection well cover based on ultrasonic Doppler effect - Google Patents

Intelligent inspection well cover based on ultrasonic Doppler effect Download PDF

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Publication number
CN113529910A
CN113529910A CN202110790802.7A CN202110790802A CN113529910A CN 113529910 A CN113529910 A CN 113529910A CN 202110790802 A CN202110790802 A CN 202110790802A CN 113529910 A CN113529910 A CN 113529910A
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Prior art keywords
baffle
cover plate
inspection well
water
rain
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CN113529910B (en
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金佳珉
陈央
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06Gully gratings
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06Gully gratings
    • E03F2005/068Gully gratings with means for enhancing water flow
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F2201/00Details, devices or methods not otherwise provided for
    • E03F2201/20Measuring flow in sewer systems

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

The invention discloses an intelligent inspection well cover based on an ultrasonic Doppler effect, and relates to an inspection well cover. At present, when raining, the closed inspection well cover cannot be opened in time. The rain detection device comprises a rain detection module, a driving module and a power supply module; the driving module comprises a driving circuit, a motor, a wire spool and a second pull wire; when the rain detection module determines that rain falls, the driving module is controlled to drive the blocking component to act, the driving circuit drives the motor to rotate, the wire spool rotates to wind the second pull rope, the counterweight floating ball is pulled up, the first pull rope is loosened, the baffle is not pulled by the first pull rope, and under the condition that the water collecting tank has no accumulated water, the baffle acts first to open the water passing tank of the cover plate, so that rain can enter the inspection well below the cover plate through the water passing tank in time; when the rain stops or the load of the motor is changed from big to small and reaches a set threshold value, the motor rotates reversely, and the second pull rope is loosened; in the technical scheme, rainwater enters the inspection well in time through the water tank, so that the problem of surface water accumulation caused by the fact that the inspection well is not opened is avoided.

Description

Intelligent inspection well cover based on ultrasonic Doppler effect
Technical Field
The invention relates to an inspection well cover, in particular to an intelligent inspection well cover based on an ultrasonic Doppler effect.
Background
At present, the water leakage part of the urban inspection well water channel cover plate is normally open, so that a large amount of garbage enters a sewer to pollute a river channel when the urban inspection well water channel cover plate does not rain. And is easy to block; to the well lid that can open and shut, inlay in the debris in the well lid in opening, still can fall into the well lid, can not thoroughly obstruct the debris entering. Therefore, the applicant applies for the inspection well cover with the automatic switch, when no rainwater exists, the roller is directly embedded into the water passing groove to block the bottom of the water passing groove, so that the sundry accommodating space of the water passing groove is reduced, and sundries can be swept out of the water passing groove during cleaning; however, the balance weight floating ball cannot float upwards and cannot open the inspection well cover due to the fact that no water exists in the inspection well when rain begins, the inspection well cover can be opened only when water leaking from the inspection well cover collects to a certain height, and the time for opening the inspection well cover is too late, so that water is accumulated on the road surface.
Disclosure of Invention
The invention aims to solve the technical problems and provide a technical task for perfecting and improving the prior technical scheme and providing an intelligent inspection well cover based on an ultrasonic Doppler effect so as to achieve the purpose of opening the inspection well cover in time when raining. Therefore, the invention adopts the following technical scheme.
An intelligent inspection well cover based on an ultrasonic Doppler effect comprises a cover plate and a plugging component matched with the cover plate, wherein the plugging component comprises a baffle plate, a counterweight floating ball and a first pull rope arranged between the baffle plate and the counterweight floating ball; when water is accumulated in the water collecting tank, the counterweight floating ball floats upwards, the first pull rope is loosened, the baffle is not pulled by the first pull rope, the baffle acts and avoids the water passing tank of the cover plate, and rainwater can enter the inspection well below the cover plate through the water passing tank; the method is characterized in that: the rain detection module is used for rain detection, the driving module is connected with the rain detection module and used for driving the plugging assembly to work, and the power supply module is connected with the rain detection module and the driving module and used for supplying power to the rain detection module and the driving module; the driving module comprises a driving circuit, a motor connected with the driving circuit, a wire spool and a second pull wire positioned between the wire spool and the counterweight floating ball; when the rain detection module determines that rain falls, the driving module is controlled to drive the blocking component to act, the driving circuit drives the motor to rotate, the wire spool rotates to wind the second pull rope, the counterweight floating ball is pulled up, the first pull rope is loosened, the baffle is not pulled by the first pull rope, and under the condition that the water collecting tank has no accumulated water, the baffle acts first to open the water passing tank of the cover plate, so that rain can enter the inspection well below the cover plate through the water passing tank in time; when the rain stops or the load of the motor is changed from big to small and reaches a set threshold value, the motor rotates reversely, and the second pull rope is loosened;
the rain detection module is embedded into the cover plate, and a detection head at the top of the rain detection module is protruded above the upper plane of the cover plate; the rain detection module analyzes rain based on the ultrasonic Doppler effect, and the rain detection module judges whether rain falls or not comprises the following steps:
1) the rain detection module sends out sound waves;
2) receiving sound and making a fast fourier transform;
3) finding a frequency offset peak and calculating an offset;
4) and judging whether raining or not according to the frequency.
In this technical scheme, when detecting the rain, can driving motor, make the counter weight floater lift, the baffle is opened, makes the rainwater in time get into in the inspection well through the basin, when the catch bowl in the inspection well has enough water, when will further hold up the counter weight floater, the motor load is by big diminishing, and the motor reversal at this moment stops to for next preparation, and can avoid long-time tractive, and influence drive module's life. Or when the rain stops, the motor stops after reversing, and the counterweight floating ball is supported to depend on the water amount in the inspection well. This technical scheme prevents that debris from getting into the inspection shaft when, also avoids causing surface gathered water because of the inspection shaft does not open. The top detection head of the rain detection module is protruded above the upper plane of the cover plate, so that the detection head of the rain detection module is not shielded, the detection head is 1-3mm higher than the cover plate, the detection head is prevented from being covered by sundries, and the reliability of detection is improved.
As a preferable technical means: the formula of the ultrasonic doppler effect is:
Figure BDA0003161017330000031
where f is the frequency received by the observer, f0 is the frequency of the transmission, c is the speed of sound propagation in the medium, v1 is the speed of movement of the observer, which is positive if the receiving location is close to the source, otherwise negative, v2 is the speed of movement of the source, which is positive if the source is far from the receiving location, and positive if it is close to the observer. In the experiment, an observer is a raining detection module, an emission source is raindrops, and the raining detection module is fixed, so that v1 is 0, v2 is the speed of the raindrops, and c is the speed of sound;
Figure BDA0003161017330000032
by conversion, the frequency offset can be obtained to be in direct proportion to the motion speed of the emission source,
Figure BDA0003161017330000033
and c is 340m/s far greater than the moving speed of rainwater, so
Figure BDA0003161017330000041
Therefore, by measuring the change of the frequency of the sound wave, the movement speed of the object which transmits the ultrasonic wave can be calculated;
according to displacement s and velocity vtThe formula:
Figure BDA0003161017330000042
vt=v0+gt,
wherein v istThe falling speed at the time t, v0 and g are initial falling speeds and gravity acceleration, and raindrop movement is distinguished through the speeds;
and (4) taking the maximum raindrop diameter as the spectral width to obtain the maximum speed of the raindrops in the air, and distinguishing whether raining occurs or not. The maximum raindrop diameter is called the spectral width, generally 2-3 mm, and rarely exceeds 6 mm. Then, the maximum value is taken, the maximum speed of the raindrops in the air is 11.66m/s according to a formula, and whether rains or not can be well distinguished through the speed raining detection module. Other movements, such as walking by a pedestrian, etc., are excluded. The resolution accuracy is improved.
As a preferable technical means: the blocking assembly is arranged on the lower end face of the cover plate, the blocking plate is a roller switch plate, the blocking assembly further comprises a tension spring connected with one end of the roller switch plate and a rotating shaft arranged on the lower end face of the cover plate, one end of the tension spring is connected with the lower end face of the cover plate, the other end of the tension spring is connected with the roller switch plate, the first pull rope penetrates through a gap between the cover plate and the rotating shaft, and a counterweight floating ball at the lower end of the first pull rope is suspended in the water collecting tank; the roller switch board comprises a plurality of side-by-side rollers and a connecting piece for connecting adjacent rollers, and the rollers are parallel to the water passing groove; the distance between the adjacent rollers is matched with the distance between the cover plate and the water passing groove; when water is accumulated in the water collecting tank, the counterweight floating ball floats upwards, the tension spring retracts, and the roller of the roller switch plate is separated from the water passing tank, so that rainwater falls into the inspection well from the water passing tank; when the water collecting tank is empty of water, the counterweight floating ball sinks, the rolling switch plate is tensioned to lift the rolling switch plate, the roller is embedded into the water collecting tank and blocks the water collecting tank, impurities are prevented from entering the inspection well from the water passing tank, and the sum of the tension spring and the resistance of the water passing tank to the roller is balanced with the gravity of the counterweight floating ball; when the rain detection module detects rain, the counterweight floating ball does not float, the second pull wire is pulled through the driving module, the counterweight floating ball rises, the tension spring retracts, the roller of the roller switch plate is separated from the water passing groove, and rainwater falls into the inspection well from the water passing groove. This technical scheme adopts same counter weight floater, controls same shutoff subassembly through the promotion or the whereabouts to the counter weight floater, and sharing counter weight floater, shutoff subassembly improve on the basis of original structure, reform transform with low costsly. Simple structure and reliable operation.
As a preferable technical means: the cover plate is provided with a rain detection module accommodating cavity for accommodating the rain detection module and a storage battery accommodating cavity for accommodating a storage battery, the roller is provided with a photovoltaic panel, the tension spring is a conductive piece and is electrically connected with the photovoltaic panel and the storage battery; the storage battery stores the electric energy of the photovoltaic panel. Generating power by adopting a photovoltaic panel, and storing electric energy on a storage battery; in order to prevent the situation that the storage battery does not store electricity due to the absence of the sun for a long time, the storage battery can be replaced, so that the driving module can work normally. The storage battery is used, so that the structure can be simplified, and the power wire is prevented from being pulled. And the working time of the motor is limited, the power consumption is low, and the service life of the storage battery is long.
As a preferable technical means: the baffle is a rigid piece and comprises a bottom plate and a plurality of parallel barrier strips protruding from the upper surface of the bottom plate, one end of the baffle is a cover plate connecting end, and the other end of the baffle is a counterweight floating ball connecting end; when the inspection well cover is in a closed state, the barrier strip is embedded into the water passing groove of the cover plate, and the barrier strip is in clearance fit with the water passing groove of the cover plate;
the cover plate connecting end is connected with the cover plate through a rotating connecting assembly, so that the baffle plate can rotate relative to the cover plate; the bottom surface of the cover plate is provided with a hanging ring, the upper end of the first pull rope penetrates through the hanging ring upwards and then is connected with the baffle plate downwards, and when the water collecting tank is empty of water, the counterweight floating ball sinks to pull the baffle plate upwards; the motor and the wire spool are arranged on the bottom surface of the cover plate, and when the motor drives the wire spool to rotate, the counterweight floating ball is driven to ascend or descend through the second pull rope so as to change the state of the first pull rope. The mode that the barrier strip is embedded into the water passing groove is adopted, the water passing groove is blocked, and large sundries are prevented from entering the water passing groove. When the counterweight floating ball rises, upward pulling force caused by the counterweight floating ball is removed, so that the baffle plate rotates downwards, part or all of the barrier strips are separated from the water passing groove, and rainwater enters the inspection well.
As a preferable technical means: the counter weight floater restriction between two vertical baffles of inspection shaft, be equipped with the hole of permeating water on the baffle, two baffles are perpendicular with the length direction of inspection shaft, two baffles form the water catch bowl, baffle counter weight floater link shrink backward, make rings, wire reel relative with the water catch bowl. The baffle avoids first stay cord and second stay cord, improves the reliability of work.
As a preferable technical means: the top surface of the barrier strip is provided with a photovoltaic plate, and when the inspection well cover is in a closed state, the photovoltaic plate is 2-10mm lower than the cover plate. Establish the photovoltaic board at the top surface of blend stop, and the photovoltaic board is less than the apron, avoids because of the destruction to the photovoltaic board such as pedestrian or vehicle, and the baffle inlays on the apron for elasticity, if pedestrian's heel tramples behind the baffle, the baffle can be down, avoids the damage to the photovoltaic board.
As a preferable technical means: the rotating connection assembly comprises a rotating shaft and an elastic piece arranged on the rotating shaft, the elastic piece is pressed on the cover plate and the baffle plate to provide elastic force for the barrier strip to be embedded into the water tank, and the rotating shaft is rotatably connected with the cover plate and the baffle plate. The elastic piece is matched with the counterweight floating ball to overcome the gravity of the baffle plate, so that the barrier strip of the baffle plate can be embedded into the water passing groove, and once the counterweight floating ball rises, the baffle plate can overcome the elasticity of the elastic piece to rotate downwards; the elastic piece is arranged, so that the baffle can be prevented from rotating too much downwards, rainwater is prevented from flowing in the inspection well, and the baffle can be prevented from being clamped with the bottom of the inspection well.
As a preferable technical means: the hinge assembly is characterized in that a limiting plate protruding upwards is arranged at the connecting end of the cover plate of the baffle, the top surface of the limiting plate can abut against the bottom surface of the cover plate to limit the baffle to rotate upwards, a rotating shaft connecting hole is formed in the limiting plate, and the rotating shaft penetrates through the rotating shaft connecting hole. The limiting plate can limit the uppermost position of the baffle plate, and the barrier strip of the baffle plate is prevented from being higher than the cover plate.
As a preferable technical means: the rain detection device is characterized in that an electrical appliance bin is arranged at the motor setting end of the cover plate, and the rain detection module and the power supply module are arranged in the electrical appliance bin. The cover plate can be provided with an electric appliance bin accommodating cavity, and the electric appliance bin can be embedded in the electric appliance bin accommodating cavity of the cover plate; the electrical appliance cabin can also be provided with a lower bottom surface of the lower cover plate.
Has the advantages that:
1. in the technical scheme, when rain is detected, the motor can be driven, the counterweight floating ball is lifted, the baffle plate is opened, rainwater enters the inspection well through the water tank in time, and accumulated water on the road surface due to the fact that the inspection well is not opened is avoided.
2. This technical scheme's power consumption is few, and when the water catch bowl in the basement well had sufficient water, when will further hold up the counter weight floater, the motor load was by diminishing greatly, and the motor reverses at this moment to stop, for next preparation, or when stopping raining, the motor reverses the back and stops, holds up the water yield that the counter weight floater relied on in the basement well, above can make the motor in time off-load, reduces power consumption, and can avoid receiving the second tractive of acting as go-between for a long time, improves drive module's life.
Drawings
Fig. 1 is a schematic view of the cover plate structure of the present invention.
Fig. 2 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 3 is a schematic diagram of the operation of the drive module of the present invention.
Fig. 4 is a schematic view of a viewing direction three-dimensional structure according to a second embodiment of the present invention.
Fig. 5 is a schematic cross-sectional structure diagram of a second embodiment of the present invention.
Fig. 6 is another view-direction structure diagram of the second embodiment of the invention.
Fig. 7 is a schematic view showing the opening of the shutter according to the second embodiment of the present invention.
In the figure: 1. a cover plate; 101. passing through a water tank; 2. a baffle plate; 201. a base plate; 202. blocking strips; 203. a limiting plate; 3. a tension spring; 4. a water collection tank; 5. a first pull cord; 6. a counterweight floating ball; 7. a rain detection module; 8. a drive circuit; 9. a motor; 10. a wire spool; 11. a second pull wire; 12. a photovoltaic panel; 13. a storage battery; 14. a hoisting ring; 15. a rotating shaft; 16. an elastic member; 17. a separator.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings in the specification.
The first embodiment is as follows: as shown in fig. 1, 2 and 3, the rain protection device comprises a cover plate 1 and a plugging component matched with the cover plate 1, wherein the plugging component comprises a baffle plate 2, a counterweight floating ball 6, a first pull rope 5 arranged between the baffle plate 2 and the counterweight floating ball 6, a rain detection module 7 for rain detection, a driving module connected with the rain detection module 7 and used for driving the plugging component to work, and a power supply module connected with the rain detection module 7 and the driving module and used for supplying power to the rain detection module 7 and the driving module; the cover plate 1 is provided with a plurality of water passing grooves 101 in parallel, the counterweight floating ball 6 positioned at the lower end of the first pull rope 5 is suspended in the water collecting groove 4, and the counterweight floating ball 6 pulls the baffle plate 2 through the first pull rope 5, so that the baffle plate 2 covers the water passing grooves 101 of the cover plate 1; when water is accumulated in the water collecting tank 4, the counterweight floating ball 6 floats upwards, the first pull rope 5 is loosened, the baffle 2 is not pulled by the first pull rope 5, the baffle 2 acts and avoids the water passing tank 101 of the cover plate 1, and rainwater can enter the inspection well below the cover plate 1 through the water passing tank 101; the driving module comprises a driving circuit 8, a motor 9 connected with the driving circuit 8, a wire spool 10 and a second pull wire 11 positioned between the wire spool 10 and the counterweight floating ball 6; when the rain detection module 7 determines that it is raining, the driving module is controlled to drive the blocking assembly to act, the driving circuit 8 drives the motor 9 to rotate, the wire spool 10 rotates to wind the second pull rope, the counterweight floating ball 6 is pulled up, the first pull rope 5 is loosened, the baffle plate 2 is not pulled by the first pull rope 5, under the condition that the water collecting tank 4 is not accumulated, the baffle plate 2 acts first, the water passing tank 101 of the cover plate 1 is opened, and rainwater can enter the inspection well below the cover plate 1 through the water passing tank 101 in time; when the rain stops or the load of the motor 9 is changed from big to small and reaches a set threshold value, the motor 9 rotates reversely, and the second pull rope is loosened;
the rain detection module 7 is embedded into the cover plate 1, and a detection head at the top of the rain detection module 7 is protruded above the upper plane of the cover plate 1; the rain detection module 7 analyzes rain based on the ultrasonic doppler effect, and the rain detection module 7 judges whether rain falls includes the following steps:
1, the rain detection module 7 sends out sound waves;
2, receiving sound and making fast Fourier transform;
3 finding a frequency offset peak and calculating an offset;
and 4, judging whether raining occurs or not according to the frequency.
In order to fully utilize the structure of the original inspection well cover with an automatic switch and reduce the reconstruction cost, in the embodiment, the baffle 2 is a roller switch plate, the plugging component further comprises a tension spring 3 connected with one end of the roller switch plate and a rotating shaft 15 arranged on the lower end face of the cover plate 1, one end of the tension spring 3 is connected with the lower end face of the cover plate 1, the other end of the tension spring 3 is connected with the roller switch plate, the first pull rope 5 penetrates through a gap between the cover plate 1 and the rotating shaft 15, and a counterweight floating ball 6 at the lower end of the first pull rope 5 is suspended in the water collecting tank 4; the roller switch board comprises a plurality of side-by-side rollers and a connecting piece for connecting adjacent rollers, and the rollers are parallel to the water passing groove 101; the distance between the adjacent rollers is matched with the distance between the cover plate 1 and the water tank 101; when water is accumulated in the water collecting tank 4, the counterweight floating ball 6 floats upwards, the tension spring 3 retracts, and the roller of the roller switch plate is separated from the water passing tank 101, so that rainwater falls into the inspection well from the water passing tank 101; when the water collecting tank 4 is free of water, the counterweight floating ball 6 sinks, the rolling switch plate is tensioned to lift the rolling switch plate, the roller is embedded into the water collecting tank 4 and blocks the water collecting tank 4, impurities are prevented from entering the inspection well from the water passing tank 101, and the sum of the tension spring 3 and the resistance of the water passing tank 101 to the roller is balanced with the gravity of the counterweight floating ball 6; when the rain detection module 7 detects rain, the counterweight floating ball 6 does not float upwards, the second pull wire 11 is pulled through the driving module, so that the counterweight floating ball 6 rises, the tension spring 3 retracts, the roller of the roller switch plate is separated from the water passing groove 101, and rainwater falls into the inspection well from the water passing groove 101. This technical scheme adopts same counter weight floater 6, controls same shutoff subassembly through the promotion or the whereabouts to counter weight floater 6, and sharing counter weight floater 6, shutoff subassembly improve on the basis of original structure, reform transform with low costs. Simple structure and reliable operation.
When the water collecting tank 4 in the inspection well has enough water and the counterweight floating ball 6 is further lifted, the load of the motor 9 is changed from big to small, at the moment, the motor 9 is reversed and stopped to prepare for the next time, and the long-time traction can be avoided to influence the service life of the driving module; or when the rain stops, the motor 9 stops after reversing, and the counterweight floating ball 6 is supported to depend on the water amount in the inspection well; this technical scheme can in time open the sheltering from of baffle 2 to water passing tank 101, avoids not opening because of the inspection shaft and causes surface gathered water.
To improve the reliability of detection. The top detection head of the rain detection module is protruded above the upper plane of the cover plate, so that the detection head of the rain detection module is not shielded, and the detection head is 1-3mm higher than the cover plate, thereby avoiding the cover plate from being covered by sundries. The rain detection module is embedded into the cover plate from bottom to top and is fixed on the cover plate by adopting a connecting piece, and the power supply module and the rain detection module can be integrated and integrally embedded into the cover plate;
the formula of the ultrasonic Doppler effect is as follows:
Figure BDA0003161017330000111
where f is the frequency received by the observer, f0 is the frequency of the transmission, c is the speed of sound propagation in the medium, v1 is the speed of movement of the observer, which is positive if the receiving location is close to the source, otherwise negative, v2 is the speed of movement of the source, which is positive if the source is far from the receiving location, and positive if it is close to the observer. In the experiment, an observer is a raindrop detection module, an emission source is raindrops, and the raindrop detection module is fixed, so v1 is 0, v2 is the speed of the raindrops, and c is the speed of sound.
Figure BDA0003161017330000112
By conversion, the frequency offset can be obtained to be in direct proportion to the motion speed of the emission source,
Figure BDA0003161017330000113
and c is 340m/s far greater than the moving speed of rainwater, so
Figure BDA0003161017330000114
Therefore, by measuring the change of the frequency of the sound wave, the movement speed of the object which transmits the ultrasonic wave can be calculated;
according to displacement s and velocity vtThe formula:
Figure BDA0003161017330000121
vt=v0+gt
wherein vt is the falling speed at the moment t, v0 is the initial falling speed, g is the gravity acceleration, and raindrop movement is identified through the speed;
and (4) taking the maximum raindrop diameter as the spectral width to obtain the maximum speed of the raindrops in the air, and distinguishing whether raining occurs or not. The maximum raindrop diameter is called the spectral width, generally 2-3 mm, and rarely exceeds 6 mm. Then, the maximum value is taken, the maximum speed of the raindrops in the air is 11.66m/s according to a formula, and whether rains or not can be well distinguished through the speed raining detection module. Other movements, such as walking by a pedestrian, etc., are excluded. The resolution accuracy is improved.
In order to simplify the structure and facilitate power taking, a rain detection module accommodating cavity for accommodating the rain detection module and a storage battery accommodating cavity for accommodating a storage battery 13 are formed in the cover plate 1, a photovoltaic panel 12 is arranged on the roller, the tension spring 3 is a conductive piece, and the tension spring 3 is electrically connected with the photovoltaic panel 12 and the storage battery 13; the accumulator 13 stores the photovoltaic panel 12 electric energy. Generating electricity by using a photovoltaic panel 12 and storing the electric energy on a storage battery 13; of course, in order to prevent the battery 13 from storing electricity when the sun is absent for a long time, the driving module may be normally operated by replacing the battery 13. The use of the battery 13 can simplify the structure and avoid pulling the power line. And the working time of the motor 9 is limited, the power consumption is low, and the service life of the storage battery 13 is long.
Example two:
as shown in fig. 4 to 7, the same parts as those in the first embodiment are not described again, except that:
in order to make the structure more firm, in this embodiment, the baffle 2 includes a bottom plate 201 and a plurality of parallel barrier strips 202 protruding from the upper surface of the bottom plate 201, one end of the baffle 2 is a connecting end of the cover plate 1, and the other end of the baffle 2 is a connecting end of the counterweight floating ball 6; when the inspection well cover is in a closed state, the barrier strip 202 is embedded into the water passing groove 101 of the cover plate 1, and the barrier strip 202 is in clearance fit with the water passing groove 101 of the cover plate 1;
the connecting end of the cover plate 1 is connected with the cover plate 1 through a rotating connecting assembly, so that the baffle plate 2 can rotate relative to the cover plate 1; the bottom surface of the cover plate 1 is provided with a hanging ring 14, the upper end of the first pull rope 5 upwards penetrates through the hanging ring 14 and then downwards connects with the baffle 2, and when the water collecting tank 4 is empty of water, the counterweight floating ball 6 sinks to upwards tension the baffle 2; the motor 9 and the wire spool 10 are arranged on the bottom surface of the cover plate 1, and when the motor 9 drives the wire spool 10 to rotate, the counterweight floating ball 6 is driven by the second pull rope to ascend or descend so as to change the state of the first pull rope 5. Baffle 2 includes bottom plate 201 and locates blend stop 202 on baffle 2, baffle 2 is the rigidity piece, and the distance between blend stop 202 can not change, and the wholeness is good, can not appear because of adjacent blend stop 202 apart from shortening or lengthening and lead to the condition emergence that partial blend stop 202 can not imbed basin 101, adopts blend stop 202 to imbed the mode of basin 101 among this technical scheme, basin 101 is crossed in the shutoff, prevents that large-scale debris from getting into in the basin 101. When the counterweight floating ball 6 rises, upward pulling force caused by the counterweight floating ball 6 is removed, so that the baffle 2 rotates downwards, part or all of the barrier strips 202 are separated from the water passing groove 101, and rainwater enters the inspection well.
In order to avoid the first pull rope 5 and the second pull rope from being disconnected due to the friction of the baffle 2; the counter weight floater 6 restriction be equipped with the hole of permeating water between two vertical baffle 17 of inspection shaft on the baffle 17, two baffle 17 are perpendicular with the length direction of inspection shaft, two baffle 17 form water catch bowl 4, 2 counter weight floater 6 link of baffle contract backward, make rings 14, wire reel 10 relative with water catch bowl 4. The baffle 2 avoids the first pull rope 5 and the second pull rope, and the working reliability is improved.
In order to realize power taking, the top surface of the barrier strip 202 is provided with a photovoltaic plate 12, and when the inspection well cover is in a closed state, the photovoltaic plate 12 is 12-10mm lower than the cover plate. Establish photovoltaic board 12 at the top surface of blend stop 202, and photovoltaic board 12 is less than apron 1, avoids because of the destruction to photovoltaic board 12 such as pedestrian or vehicle, and baffle 2 inlays on apron 1 for elasticity, if pedestrian's heel tramples behind baffle 2, baffle 2 can be down, avoids the damage to photovoltaic board 12.
For making baffle 2 can reliably open and shut, rotation coupling assembling include pivot 15, around establishing the elastic component 16 on pivot 15, elastic component 16 supports and presses on apron 1 and baffle 2, provides the elasticity that blend stop 202 embedded water tank 101, pivot 15 with apron 1, baffle 2 rotate and be connected. The elastic piece 16 is matched with the counterweight floating ball 6 to overcome the gravity of the baffle 2, so that the barrier strip 202 of the baffle 2 can be embedded into the water passing groove 101, and once the counterweight floating ball 6 rises, the baffle 2 can overcome the elasticity of the elastic piece 16 to rotate downwards; the elastic piece 16 can prevent the baffle 2 from rotating too much downwards to stop rainwater from flowing in the inspection well, and can also prevent the baffle 2 from being blocked with the bottom of the inspection well. For the position of restriction baffle 2, the 1 link of apron of baffle 2 be equipped with the bellied limiting plate 203 that makes progress, the top surface of limiting plate 203 can be inconsistent with the bottom surface of apron 1 and restrict baffle 2 upwards and rotate, limiting plate 203 on set up pivot 15 connecting hole, pivot 15 wear to establish on pivot 15 connecting hole. The limiting plate 203 can limit the uppermost position of the baffle 2, and prevent the barrier strip 202 of the baffle 2 from being higher than the cover plate 1.
In order to facilitate the reliable installation of the electrical elements, an electrical appliance bin is arranged at the motor setting end of the cover plate 1, and the rain detection module 7 and the power supply module are arranged in the electrical appliance bin. The cover plate 1 can be provided with an electric appliance bin accommodating cavity, and the electric appliance bin can be embedded in the electric appliance bin accommodating cavity of the cover plate 1; the lower bottom surface of the lower cover plate 1 can be arranged on the electrical bin, and when the electrical bin is positioned on the lower bottom surface of the cover plate 1, a water baffle plate is arranged on the lower cover plate 1 to prevent the impact of rainwater.
The above-mentioned intelligent inspection well cover based on ultrasonic doppler effect shown in fig. 1-7 is a specific embodiment of the present invention, has embodied the substantial features and progress of the present invention, and can be modified in shape, structure and the like according to the practical use requirements, all within the scope of protection of the present solution.

Claims (10)

1. An intelligent inspection well cover based on an ultrasonic Doppler effect comprises a cover plate (1) and a plugging component matched with the cover plate (1), wherein the plugging component comprises a baffle (2), a counterweight floating ball (6) and a first pull rope (5) arranged between the baffle (2) and the counterweight floating ball (6), a plurality of parallel water passing grooves (101) are formed in the cover plate (1), the counterweight floating ball (6) positioned at the lower end of the first pull rope (5) is suspended in a water collecting groove (4), and the baffle (2) is pulled by the counterweight floating ball (6) through the first pull rope (5), so that the baffle (2) covers the water passing grooves (101) of the cover plate (1); when water is accumulated in the water collecting tank (4), the counterweight floating ball (6) floats upwards, the first pull rope (5) is loosened, the baffle (2) is not pulled by the first pull rope (5), the baffle (2) acts and avoids the water passing tank (101) of the cover plate (1), and rainwater can enter the inspection well below the cover plate (1) through the water passing tank (101); the method is characterized in that: the rain detection device also comprises a rain detection module (7) for rain detection, a driving module which is connected with the rain detection module (7) and is used for driving the plugging assembly to work, and a power supply module which is connected with the rain detection module (7) and the driving module and is used for supplying power to the rain detection module (7) and the driving module; the driving module comprises a driving circuit (8), a motor (9) connected with the driving circuit (8), a wire spool (10) and a second pull wire (11) positioned between the wire spool (10) and the counterweight floating ball (6); when the rain detection module (7) considers that it is rainy, the driving module is controlled to drive the blocking component to act, the driving circuit (8) drives the motor (9) to rotate, the wire spool (10) rotates to wind the second pull rope, the counterweight floating ball (6) is pulled up, the first pull rope (5) is loosened, the baffle (2) is not pulled by the first pull rope (5), under the condition that the water collecting tank (4) is not accumulated, the baffle (2) acts firstly, the water passing tank (101) of the cover plate (1) is opened, and rainwater can enter the inspection well below the cover plate (1) through the water passing tank (101) in time; when the rain stops or the load of the motor (9) is changed from big to small and reaches a set threshold value, the motor (9) rotates reversely, and the second pull rope is loosened;
the rain detection module (7) is embedded into the cover plate (1), and a detection head at the top of the rain detection module (7) is protruded above the upper plane of the cover plate (1); the rain detection module (7) analyzes rain based on the ultrasonic Doppler effect, and the rain detection module (7) judges whether rain falls comprises the following steps:
1) the rain detection module (7) emits sound waves;
2) receiving sound and making a fast fourier transform;
3) finding a frequency offset peak and calculating an offset;
4) and judging whether raining or not according to the frequency.
2. The intelligent inspection well cover based on the ultrasonic Doppler effect is characterized in that: the formula of the ultrasonic doppler effect is:
Figure FDA0003161017320000021
wherein f is the frequency received by the observer, f0 is the frequency of emission, c is the speed of sound propagation in the medium, v1 is the speed of movement of the observer, if the receiving position is close to the wave source it is positive, otherwise it is negative, v2 is the speed of movement of the emission source, the emission source is far from the receiving position it is positive, close to the observer it is positive; in the experiment, an observer is a raining detection module, an emission source is raindrops, and the raining detection module is fixed, so that v1 is 0, v2 is the speed of the raindrops, and c is the speed of sound;
Figure FDA0003161017320000022
by conversion, the frequency offset can be obtained to be in direct proportion to the motion speed of the emission source,
Figure FDA0003161017320000023
and c is 340m/s far greater than the moving speed of rainwater, so
Figure FDA0003161017320000031
Therefore, by measuring the change of the frequency of the sound wave, the movement speed of the object which transmits the ultrasonic wave can be calculated;
according to the displacement s and velocity vt formulas:
Figure FDA0003161017320000032
vt=v0+gt,
wherein vt is the falling speed at the moment t, v0 is the initial falling speed, g is the gravity acceleration, and raindrop movement is identified through the speed;
and (4) taking the maximum raindrop diameter as the spectral width to obtain the maximum speed of the raindrops in the air, and distinguishing whether raining occurs or not.
3. The intelligent inspection well cover based on the ultrasonic Doppler effect is characterized in that: the blocking assembly is characterized in that the baffle (2) is a roller switch plate, the blocking assembly further comprises a tension spring (3) connected with one end of the roller switch plate and a rotating shaft (15) arranged on the lower end face of the cover plate (1), one end of the tension spring (3) is connected with the lower end face of the cover plate (1), the other end of the tension spring (3) is connected with the roller switch plate, the first pull rope (5) penetrates through a gap between the cover plate (1) and the rotating shaft (15), and a counterweight floating ball (6) at the lower end of the first pull rope (5) is suspended in the water collecting tank (4); the roller switch board comprises a plurality of side-by-side rollers and a connecting piece for connecting adjacent rollers, and the rollers are parallel to the water passing groove (101); the distance between the adjacent rollers is matched with the distance between the cover plate (1) and the water tank (101); when water is accumulated in the water collecting tank (4), the counterweight floating ball (6) floats upwards, the tension spring (3) retracts, and the roller of the roller switch plate is separated from the water passing tank (101), so that rainwater falls into the inspection well from the water passing tank (101); when the water collecting tank (4) is anhydrous, the counterweight floating ball (6) sinks, the rolling switch plate is tensioned to lift the rolling switch plate, the roller is embedded into the water collecting tank (4) and blocks the water collecting tank (4), impurities are prevented from entering the inspection well from the water passing tank (101), and the sum of the tension spring (3) and the resistance of the water passing tank (101) to the roller is balanced with the gravity of the counterweight floating ball (6); when the rain detection module (7) detects rain, the counterweight floating ball (6) does not float, the second pull wire (11) is pulled through the driving module, so that the counterweight floating ball (6) rises, the tension spring (3) retracts, the roller of the roller switch plate is separated from the water passing groove (101), and rainwater falls into the inspection well from the water passing groove (101).
4. The intelligent inspection well cover based on the ultrasonic Doppler effect is characterized in that: the rain detection module accommodating cavity for accommodating the rain detection module and the storage battery accommodating cavity for accommodating the storage battery (13) are formed in the cover plate (1), the roller is provided with a photovoltaic panel (12), the tension spring (3) is a conductive piece, and the tension spring (3) is electrically connected with the photovoltaic panel (12) and the storage battery (13); the accumulator (13) stores the electric energy of the photovoltaic panel (12).
5. The intelligent inspection well cover based on the ultrasonic Doppler effect is characterized in that: the baffle (2) is a rigid piece and comprises a bottom plate (201) and a plurality of parallel barrier strips (202) protruding from the upper surface of the bottom plate (201), one end of the baffle (2) is a connecting end of the cover plate (1), and the other end of the baffle (2) is a connecting end of the counterweight floating ball (6); when the inspection well cover is in a closed state, the barrier strip (202) is embedded into the water passing groove (101) of the cover plate (1), and the barrier strip (202) is in clearance fit with the water passing groove (101) of the cover plate (1);
the connecting end of the cover plate (1) is connected with the cover plate (1) through a rotating connecting assembly, so that the baffle plate (2) can rotate relative to the cover plate (1); the hanging ring (14) is arranged on the bottom surface of the cover plate (1), the upper end of the first pull rope (5) upwards penetrates through the hanging ring (14) and then is downwards connected with the baffle (2), and when the water collecting tank (4) is empty of water, the counterweight floating ball (6) sinks to upwards tension the baffle (2); the motor (9) and the wire spool (10) are arranged on the bottom surface of the cover plate (1), and when the motor (9) drives the wire spool (10) to rotate, the counterweight floating ball (6) is driven to ascend or descend through the second pull rope so as to change the state of the first pull rope (5).
6. The intelligent inspection well cover based on the ultrasonic Doppler effect is characterized in that: counter weight floater (6) restriction between two vertical baffle (17) of inspection shaft, be equipped with the hole of permeating water on baffle (17), two baffle (17) are perpendicular with the length direction of inspection shaft, two baffle (17) form water catch bowl (4), baffle (2) counter weight floater (6) link after contract, make rings (14), wire reel (10) relative with water catch bowl (4).
7. The intelligent inspection well cover based on the ultrasonic Doppler effect is characterized in that: the top surface of the barrier strip (202) is provided with a photovoltaic plate (12), and when the inspection well cover is in a closed state, the photovoltaic plate (12) is 2-10mm lower than the cover plate (1).
8. The intelligent inspection well cover based on the ultrasonic Doppler effect is characterized in that: the rotation connecting assembly comprises a rotating shaft (15) and an elastic piece (16) arranged on the rotating shaft (15), the elastic piece (16) is pressed on the cover plate (1) and the baffle plate (2) in a propping mode, elastic force of the barrier strip (202) embedded into the water channel (101) is provided, and the rotating shaft (15) is rotatably connected with the cover plate (1) and the baffle plate (2).
9. The intelligent inspection well cover based on the ultrasonic Doppler effect is characterized in that: apron (1) link of baffle (2) be equipped with bellied limiting plate (203) that makes progress, the top surface of limiting plate (203) can be balanced with the bottom surface of apron (1) and restrict baffle (2) upwards rotation, limiting plate (203) on set up pivot (15) connecting hole, pivot (15) wear to establish on pivot (15) connecting hole.
10. The intelligent inspection well cover based on the ultrasonic Doppler effect is characterized in that: the rain-proof cover plate is characterized in that an electrical bin is arranged at the motor setting end of the cover plate (1), and the rain-proof detection module (7) and the power supply module are arranged in the electrical bin.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100733586B1 (en) * 2006-11-28 2007-06-28 (주)해석 Road structure
CN105716687A (en) * 2016-01-25 2016-06-29 福建三鑫隆信息技术开发股份有限公司 Urban drainage intelligent pre-warning system based on well lids
CN110207761A (en) * 2019-07-11 2019-09-06 中国电建集团昆明勘测设计研究院有限公司 Sponge city intelligent monitors system
CN110632682A (en) * 2019-09-17 2019-12-31 昆明理工大学 Intelligent rainfall information detection device and method
CN111239842A (en) * 2020-01-09 2020-06-05 国网山西省电力公司太原供电公司 Rainwater invasion optical cable monitoring system and method based on distributed optical fiber sensing technology
CN111287296A (en) * 2020-03-07 2020-06-16 叶建锋 Method and device for intelligent operation of rainwater storage tank

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100733586B1 (en) * 2006-11-28 2007-06-28 (주)해석 Road structure
CN105716687A (en) * 2016-01-25 2016-06-29 福建三鑫隆信息技术开发股份有限公司 Urban drainage intelligent pre-warning system based on well lids
CN110207761A (en) * 2019-07-11 2019-09-06 中国电建集团昆明勘测设计研究院有限公司 Sponge city intelligent monitors system
CN110632682A (en) * 2019-09-17 2019-12-31 昆明理工大学 Intelligent rainfall information detection device and method
CN111239842A (en) * 2020-01-09 2020-06-05 国网山西省电力公司太原供电公司 Rainwater invasion optical cable monitoring system and method based on distributed optical fiber sensing technology
CN111287296A (en) * 2020-03-07 2020-06-16 叶建锋 Method and device for intelligent operation of rainwater storage tank

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