CN113706801A - Intelligent municipal drainage system and early warning processing method thereof - Google Patents
Intelligent municipal drainage system and early warning processing method thereof Download PDFInfo
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- CN113706801A CN113706801A CN202111027499.1A CN202111027499A CN113706801A CN 113706801 A CN113706801 A CN 113706801A CN 202111027499 A CN202111027499 A CN 202111027499A CN 113706801 A CN113706801 A CN 113706801A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
- G08B13/1672—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using sonic detecting means, e.g. a microphone operating in the audio frequency range
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
- G08B13/1436—Mechanical actuation by lifting or attempted removal of hand-portable articles with motion detection
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/1895—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using light change detection systems
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Abstract
The invention provides an intelligent municipal drainage system which comprises an underground drainage channel and a plurality of inspection wells, wherein the upper ports of the inspection wells are provided with well covers; the manhole cover is provided with a position signal module which is in communication connection with the control system; an alarm button is arranged at the bottom of the inspection well and is in communication connection with the control system; a plurality of sound sensors are arranged in the underground drainage channel, and each sound sensor is in communication connection with the control system. The position signal module can provide the positional information of well lid to control system in real time, and when the well lid was stolen, control system can in time discover the position change of well lid to in time repack the well lid. When someone falls into the well, the alarm button can give an alarm, and managers can immediately organize rescue. The sound sensor is used for detecting sound in the underground drainage channel, when a person falling into the well calls for help, the place where the sound of calling for help can be quickly detected, and rescue workers quickly reach the position of the person falling into the well, so that timely rescue is guaranteed.
Description
Technical Field
The invention relates to the technical field of urban drainage, in particular to an intelligent municipal drainage system and an early warning processing method thereof.
Background
At present, municipal drainage pipe network generally includes secret drainage channel and sets up at a plurality of inspection shafts on ground, and the well lid that passes through of inspection shaft seals, and when the well lid was stolen or damaged, relevant managers were difficult to in time discover, probably lead to the pedestrian to fall into the inspection shaft. When a pedestrian falls into the inspection well, if the inspection well is deep, the distress sound of the person falling into the inspection well is difficult to transmit to the ground, the passing pedestrian is difficult to find in time and rescue in time, and the injury of the person falling into the inspection well is aggravated possibly to cause serious consequences. In addition, when the water flow of the underground drainage channel is large, people falling into the well can be washed away by the water flow, and the rescue workers cannot find the position of the people falling into the well quickly.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the intelligent municipal drainage system and the early warning processing method thereof, which can quickly find that the well cover is stolen, can quickly obtain a distress signal and timely rescue when a person falls into the well, and can quickly find the position of the person falling into the well.
The technical scheme adopted by the invention for solving the technical problems is as follows: the intelligent municipal drainage system comprises an underground drainage channel and a plurality of inspection wells connected with the underground drainage channel, wherein a well cover is arranged at an upper port of each inspection well;
the well cover is provided with a position signal module, and the position signal module is in communication connection with the control system;
an alarm button is arranged at the bottom of the inspection well and is in communication connection with a control system;
a plurality of sound sensors are arranged in the underground drainage channel, and each sound sensor is in communication connection with the control system.
Furthermore, a plurality of water wave measuring devices are arranged in the underground drainage channel, and each water wave measuring device is in communication connection with the control system.
And furthermore, an intrusion detector is arranged on each well cover, and the intrusion detectors are in communication connection with the control system.
Further, the lateral wall of inspection shaft is provided with the lifting hook, the lifting hook is connected with the spring dynamometer, the lower extreme of spring dynamometer is provided with the spheroid, spheroidal density is greater than the sewage density in the secret drainage channel, the spheroid is located sewage.
Furthermore, a laser transmitter is arranged above the water surface of the underground drainage channel, a laser receiver is arranged at the corner of the underground drainage channel, laser light rays emitted by the laser transmitter are parallel to the water surface of the underground drainage channel and are received by the laser receiver, and the laser receiver is in communication connection with the control system.
According to the early warning processing method of the intelligent municipal drainage system, a position signal module on each well lid sends position information of the well lid to a control system, and when the position of the well lid changes, the well lid is indicated to be stolen;
when someone falls into the well, the alarm button sends alarm information to the control system, and after receiving the alarm information, the manager organizes rescue according to the position of the alarm button sending the alarm;
when a person falling into the well is flushed into the underground drainage channel by water flow, a calling for help sound is sent out, two sound sensors closest to the person falling into the well receive sound signals and transmit the sound signals to a control system, and assuming that the distances from the position of the person falling into the well to the two sound sensors closest to the person falling into the well are L1 and L2 respectively, the distance L between the two sound sensors closest to the person falling into the well, the propagation speed C of sound in the air in the underground drainage channel, the time difference delta T between the two sound sensors and the formula
L1+L2＝L
L1/C-L2/C＝ΔT
L1 and L2 were calculated to determine the location of the person falling into the well.
Furthermore, a plurality of water wave measuring devices are arranged in the underground drainage channel, and each water wave measuring device is in communication connection with the control system;
when the parameters of the sewage in the underground drainage channel need to be measured, a heavy object is thrown into the sewage, the heavy object enters water to make sound and generate water waves, and the water waves are transmitted upstream and downstream;
detecting sound by using the two nearest sound sensors and calculating a sound production position and a sound production time point;
assuming that the distance from the sounding position to the nearest upstream water wave meter is H1, and the distance from the sounding position to the nearest downstream water wave meter is H2, H1 and H2 can be calculated according to the sounding position and the distance H from the upstream water wave meter to the downstream water wave meter;
calculating the water wave transmission time according to the sounding time point and the time point of the water wave signal received by the water wave measurer;
calculating the upstream transfer speed V1 and the downstream transfer speed V2 of the water waves according to H1, H2 and the water wave transfer time;
according to the formula
V1＝v-(gh)^(0.5)
V2＝v+(gh)^(0.5)
Calculating the sewage speed v and the sewage depth h, wherein g is the gravity acceleration;
and calculating the sewage flow Q according to the sewage speed v and the sewage depth h.
Furthermore, a lifting hook is arranged on the side wall of the inspection well, a spring dynamometer is connected to the lifting hook, a ball body is arranged at the lower end of the spring dynamometer, the density of the ball body is greater than that of sewage in the underground drainage channel, and the ball body is ensured to be positioned in the sewage;
the ball body deflects after being impacted by sewage, the deflection angle is theta,
according to the formula
ρ*π*(d/2)2*v2*cosα＝F1*sinθ
mg+ρ*π*(d/2)2*v2*sinα＝ρ*g*VBall with ball-shaped section+F1*cosθ
Calculating the sewage velocity V and the deflection angle theta, wherein rho is the sewage density, d is the diameter of the sphere, alpha is the included angle between the underground drainage channel and the horizontal direction, F1 is the reading of a spring dynamometer, m is the mass of the sphere, and V isBall with ball-shaped sectionIs the volume of a sphere;
according to the formula
v＝1/n*R^(2/3)*I^(0.5)
R＝D/4*(1-sinB/B)
Calculating the radius R and the sewage filling angle B of the underground drainage channel, wherein n is the roughness of the underground drainage channel, I is the gradient of the underground drainage channel, and D is the diameter of the underground drainage channel;
according to the formula
Q＝A*v
A＝0.5*B*D/2*D/2+0.5*D/2*D/2*sin(2π-B)
And calculating the sewage cross-section area A and the sewage flow Q.
Further, set up intrusion detector on every well lid, intrusion detector and control system communication connection, the car rolls the well lid and makes sound, and intrusion detector detects sound signal and transmits to control system, when detecting that sound is greater than or equal to 40 decibels, then overhauls the well lid.
Further, set up laser emitter and laser receiver in two adjacent inspection wells respectively, laser emitter sends laser light towards laser receiver, laser light is on a parallel with the sewage surface, laser receiver receives laser light and with laser signal transmission to control system, when someone, thing weight down well or underground drainage passageway are blockked up, the people, the sewage among thing or the underground drainage passageway can shelter from laser light, laser signal interrupts, control system sends the police dispatch newspaper, managers organizes personnel and patrols and examines underground drainage passageway.
The invention has the beneficial effects that: through set up position signal module on every well lid, can provide the positional information of well lid to control system in real time, when the well lid is stolen, perhaps after the well lid drops, the position can change, and control system can in time discover the position change of well lid to in time organize personnel to look over and repair or repack the well lid to the scene in manager, reduce the vehicle or pedestrian because of the safe risk that the well lid disappearance brought. Through set up alarm button in the bottom of inspection shaft, accessible alarm button sends the police dispatch newspaper when someone falls into the well, and managers can organize the rescue immediately. Through set up a plurality of sound sensor in secret drainage channel, sound sensor is arranged in detecting the sound among the secret drainage channel, when the person that falls into the well calls for help, can detect fast that call for help sound is located to in the position that the rescue personnel reachd the person that falls into the well fast, guarantee timely effective of rescue.
Drawings
FIG. 1 is an overall schematic view of the present invention;
fig. 2 is a schematic diagram of velocity measurement using a small ball.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1 and 2, the intelligent municipal drainage system of the invention comprises an underground drainage channel 1 and a plurality of inspection wells 2 connected with the underground drainage channel 1, wherein the upper ports of the inspection wells 2 are provided with well covers 3, and the underground drainage channel 1 is a generally circular drainage pipe.
Still include control system, be provided with position signal module 4 on the well lid 3, position signal module 4 and control system communication connection. Control system sets up at municipal drainage management center, and control system can contain beidou navigation system, confirms the coordinate of each well lid 3 in beidou navigation system, simultaneously, also can be with the leading-in beidou navigation system in position of components such as each alarm button 5, acoustic sensor 6, water wave survey ware 7, laser receiver 13 to reach the destination fast according to the navigation when the staff patrols and examines underground drainage channel 1, rescue drop well personnel. The position signal module 4 can be a navigation positioning chip, is connected with the control system through a 4G network communication module, and is used for transmitting an alarm signal to the control system.
The working process of the position signal module 4 is as follows: position signal module 4 on every well lid 3 sends well lid 3's positional information to control system, under normal conditions, well lid 3's position keeps fixed, can not remove, when well lid 3's position changes, then indicate that well lid 3 is stolen, perhaps well lid 3 breaks away from inspection shaft 2, control system detects well lid 3's position change this moment, send alarm information to managers, managers can organize personnel immediately and look over on the spot, repair or repack well lid 3, reduce the safety risk that vehicle or pedestrian brought because of the well lid 3 disappearance.
And an alarm button 5 is arranged at the bottom of the inspection well 2, and the alarm button 5 is in communication connection with a control system. Specifically, the alarm button 5 is connected with a control chip such as a single chip microcomputer, and the alarm signal can be connected with the control system through the 4G network communication module and is used for transmitting the alarm signal to the control system.
The working process of the alarm button 5 is as follows: under the normal condition, alarm button 5 does not send alarm signal, when someone falls into 2 bottoms of inspection shaft, then can press alarm button 5, and alarm button 5 produces alarm signal promptly, and alarm signal transmits to control system, and after the managers accepted alarm signal, according to the position organization rescue of alarm button 5 who sends the police dispatch newspaper, guarantees the promptness of rescue and reachs the rescue position fast accurately.
A plurality of sound sensors 6 are arranged in the underground drainage channel 1, and each sound sensor 6 is in communication connection with a control system. The sound sensor 6 can detect the sound generated in the underground drainage channel 1, and in order to ensure the accuracy of measurement and avoid the high cost, the distance between two adjacent sound sensors 6 is not small, and preferably, the distance between two adjacent sound sensors 6 is greater than or equal to 1000 m. The sound sensor 6 may transmit the detected sound signal to the control system through the 4G network.
The sound sensor 6 is arranged to determine the position of the underground drainage channel 1 where the sound is generated, when a person falls into the well and moves into the underground drainage channel 1 along with water flow, the sound sensor 6 can detect the distress sound of the person falling into the well, and the control system can calculate the position where the distress sound is located, so that rescue is carried out. Specifically, the method comprises the following steps:
when a person falling into the well is flushed into the underground drainage channel 1 by water flow, a distress call is made, the person falling into the well is located between the two sound sensors 6, the two sound sensors 6 closest to the person falling into the well receive sound signals and transmit the sound signals to the control system, and assuming that the distance from the position of the person falling into the well to the two sound sensors 6 closest to the person falling into the well is L1 and L2 respectively, the distance between the two sound sensors 6 closest to the person falling into the well can be L, the propagation speed C of sound in the air in the underground drainage channel 1, the time difference delta T of the sound signals received by the two sound sensors 6 and a formula
L1+L2＝L
L1/C-L2/C＝ΔT
L1 and L2 were calculated to determine the location of the person falling into the well.
The sound sensors 6 are fixedly installed, the positions of the sound sensors are kept unchanged after the sound sensors are installed, the distance L between every two adjacent sound sensors 6 is determined and is known, the propagation speed C of sound in the air in the underground drainage channel 1 is also known, the time difference delta T of sound signals received by the two sound sensors 6 can be calculated according to the time points of the sound signals received by the two sound sensors 6, namely is also known, so that the positions of the distress sounds can be determined by calculating L1 and L2 according to the formula, and rescuers can quickly reach the positions of the distress sounds and rescue people falling into the well. If the person falling into the well moves, the position of the person falling into the well can be detected in real time through the distress sound, so that the rescue personnel can find the person falling into the well quickly.
Except for rescuing people falling into the well, the underground drainage channel 1 can be positioned at a certain position in the process of maintaining the underground drainage channel by people, specifically, the maintenance personnel can shout to make sound, the two nearest sound sensors 6 receive sound signals, and the control system detects the position where the shout is positioned, so that the position of the maintenance personnel is determined.
For the convenience of rescue, need know the sewage speed in underground drainage passageway 1, parameters such as flow, for the convenience of calculate this parameter fast, be provided with a plurality of water wave survey wares 7 in underground drainage passageway 1, every water wave survey ware 7 all with control system communication connection, water wave survey ware 7 can detect the water wave signal and with water wave signal transmission to control system, water wave survey ware 7 sets up in sewage, and sound sensor 6 sets up in the air.
The specific measurement process is as follows:
when the parameters of the sewage in the underground drainage channel 1 need to be measured, a heavy object is thrown into the sewage, the heavy object enters the water to generate sound and generate water waves, the sound is transmitted in the air and reaches the two nearest sound sensors 6, and the water waves are transmitted to the upstream and the downstream along the sewage and reach the two nearest water wave detectors 7.
The two nearest sound sensors 6 are used for detecting sound and calculating the sound production position and the sound production time point, and the calculation process of the sound production position refers to the position determination process of the distress call of the person falling into the well. After the sounding position is determined, L1 and L2 are obtained, L1/C, L2/C is the time for the sound to propagate from the sounding position to the sound sensor 6, and the time for the sound sensor 6 to detect the sound minus the propagation time of the sound is the sounding time point of the sound.
Assuming that the distance from the sound emission position to the nearest upstream water wave meter 7 is H1 and the distance from the sound emission position to the nearest downstream water wave meter 7 is H2, H1 and H2 can be calculated from the sound emission position and the distance H from the upstream water wave meter 7 to the downstream water wave meter 7. The water wave measuring devices 7 are fixedly installed, and after the water wave measuring devices 7 are installed, the distance between any two adjacent water wave measuring devices 7 is known. Therefore, H1 and H2 can be calculated from the position of the water wave measuring device 7 and the sound emission position.
The water wave transmission time is calculated from the sounding time and the time of the water wave signal received by the water wave measuring device 7. The difference between the sounding time point and the time point of the water wave signal received by the water wave measurer 7 is the propagation time of the water wave.
And calculating the upstream propagation speed V1 and the downstream propagation speed V2 of the water wave according to H1, H2 and the water wave propagation time, and calculating the water wave propagation speed by dividing the propagation path (H1 and H2) by the propagation time.
According to the formula
V1＝v-(gh)^(0.5)
V2＝v+(gh)^(0.5)
And calculating the sewage speed v and the sewage depth h, wherein g is the gravity acceleration.
The sewage flow rate Q is calculated from the sewage velocity v and the sewage depth h, and the shape, size, etc. of the underground drainage channel 1 are known, so that the sewage flow rate Q can be calculated from the sewage velocity and the depth. After the sewage speed v, the sewage depth h and the sewage flow Q are calculated, a better rescue strategy is formulated according to the calculation result, and the adverse effect of the sewage flow on rescue is reduced. In addition, according to the normal daily coefficient of change of certain node in the pipeline of long-term monitoring, water level data can obtain, compare real-time supervision data and historical normal change rule curve, and the low reaches passageway probably takes place to block or collapse when the liquid level is obvious on the high side, when the liquid level is obvious on the low side, then probably upstream pipe blockage or collapse, and then supplementary discovery drainage pipe network's accident hidden danger, carry out the early warning in advance.
When 2 great when the degree of depth of inspection shaft, the pedestrian falls into behind the inspection shaft 2 probably coma, can't utilize alarm button 5 to report to the police, also can not call for help, and managers are difficult to in time discover that someone falls into the well, and in order to solve this problem, underground drainage channel 1's surface of water top is provided with laser emitter, and underground drainage channel 1's corner is provided with laser receiver 13, specifically, can set up laser emitter and laser receiver 13 respectively in two adjacent inspection shafts 2, laser light 12 of laser emitter transmission is on a parallel with underground drainage channel 1's the surface of water and is received by laser receiver 13, laser receiver 13 and control system communication connection. The laser ray 12 is higher than the highest water level of the sewage, so that the normal fluctuation of the sewage flow is avoided from influencing the transmission of the laser ray 12.
Under normal conditions, laser emitter sends laser light 12 towards laser receiver 13, laser receiver 13 receives laser light 12 and transmits laser signal to control system, when someone, thing falls well or underground drainage passageway 1 and is blockked up, the people, sewage in thing or the underground drainage passageway 1 can shelter from laser light 12, laser signal interrupts, control system sends the police dispatch newspaper, managers organizes personnel and patrols and examines underground drainage passageway 1, thereby can discover in time that the person falls into the well and carry out the rescue, perhaps in time dredge underground drainage passageway 1, prevent that sewage from stretching to subaerial.
In order to facilitate the maintenance workers to calculate the sewage parameters in the underground drainage channel 1 in real time, the side wall of the inspection well 2 is provided with a lifting hook 9, the lifting hook 9 is connected with a spring dynamometer 10, the lower end of the spring dynamometer 10 is provided with a ball body 11, the density of the ball body 11 is greater than the sewage density in the underground drainage channel 1, a lead ball, an iron ball and the like can be adopted, and the ball body 11 is located in the sewage.
When sewage parameters need to be measured, the spring dynamometer 10 is hung on the lifting hook 9, the ball body 11 is immersed in water, the ball body 11 deflects after being impacted by sewage, the deflection angle is theta, according to stress analysis, the ball body 11 is subjected to vertical downward gravity, and the size of the gravity is mg (m is a ball)Mass of body 11); buoyancy vertically upwards of magnitude ρ g VBall with ball-shaped section(ρ is sewage density, V)Ball with ball-shaped sectionIs the volume of sphere 11); the tension force F1 of the spring load cell 10, which is directed upwards along the length of the spring load cell 10, can be read by the spring load cell 10; the impact force of the sewage on the ball body 11 is downward along the water flow direction, and the magnitude is rho, pi, d/2)2*v2(d is the diameter of the sphere 11), and the formula can be obtained according to the stress balance
ρ*π*(d/2)2*v2*cosα＝F1*sinθ
mg+ρ*π*(d/2)2*v2*sinα＝ρ*g*VBall with ball-shaped section+F1*cosθ
Calculating the sewage velocity V and the deflection angle theta according to the formula, wherein rho is the sewage density, d is the diameter of the ball 11, alpha is the included angle between the underground drainage channel 1 and the horizontal direction, F1 is the reading of the spring dynamometer 10, m is the mass of the ball 11, and V isBall with ball-shaped sectionIs the volume of sphere 11.
According to the formula
v＝1/n*R^(2/3)*I^(0.5)
R＝D/4*(1-sinB/B)
And calculating the hydraulic radius R and the sewage filling angle B of the sewage, wherein n is the roughness of the underground drainage channel 1, I is the gradient of the underground drainage channel 1, D is the diameter of the underground drainage channel 1, n, I and D are known, and the hydraulic radius R is the ratio of the sewage section area A to the circumferential length of the underground drainage channel 1 wetted by the sewage section.
According to the formula
Q＝A*v
A＝0.5*B*D/2*D/2+0.5*D/2*D/2*sin(2π-B)
And calculating the sewage cross-section area A and the sewage flow Q.
Be provided with intrusion detector 8 on every well lid 3, intrusion detector 8 and control system communication connection. The intrusion detector 8 may be a sound detector, an electromotive force vibration intrusion detector or a piezoelectric type vibration intrusion detector. When adopting sound detector, sound detector can detect the car and roll the sound size that produces when well lid 3, under general condition, when well lid 3 is normal when, the car rolls well lid 3 and only can produce very little sound, when well lid 3 not hard up back, the car can produce great sound when rolling, therefore, intrusion detector 8 detects the car and rolls the sound signal that well lid 3 produced and transmit to control system, when detecting sound and being greater than or equal to 40 decibels, then indicate that well lid 3 is not hard up, in time organize the personnel and overhaul well lid 3.
When adopting electromotive force vibrations intrusion detector or piezoelectric type vibrations intrusion detector, the detection car rolls the vibrations range that well lid 3 produced, and when vibrations range was great, then overhauls well lid 3.
Hydroelectric generators can be arranged at the positions of tail water of sewage plants, sewage with large gradient, rainwater pipes, drop wells and the like and used for supplying power to all elements.
In order to facilitate rescue of people falling from the well or overhaul of the underground drainage channel 1, an explosion-proof valve is arranged in the underground drainage channel 1 at intervals, and the explosion-proof valve can be remotely controlled by a control system and also can be manually controlled in a manual field and used for adjusting the flow of sewage. When the downstream is in a dangerous condition, the upstream explosion-proof valve can be closed in time to temporarily cut off the sewage, so that the sewage is prevented from continuously flowing downwards to influence personnel.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Municipal drainage system of wisdom, including secret drainage channel (1) and a plurality of inspection shaft (2) that link to each other with secret drainage channel (1), the last port of inspection shaft (2) is provided with well lid (3), its characterized in that:
the manhole cover is characterized by further comprising a control system, wherein a position signal module (4) is arranged on the manhole cover (3), and the position signal module (4) is in communication connection with the control system;
an alarm button (5) is arranged at the bottom of the inspection well (2), and the alarm button (5) is in communication connection with a control system;
a plurality of sound sensors (6) are arranged in the underground drainage channel (1), and each sound sensor (6) is in communication connection with a control system.
2. The intelligent municipal drainage system of claim 1, wherein: a plurality of water wave measuring devices (7) are arranged in the underground drainage channel (1), and each water wave measuring device (7) is in communication connection with a control system.
3. The intelligent municipal drainage system of claim 1, wherein: be provided with intrusion detector (8) on every well lid (3), intrusion detector (8) and control system communication connection.
4. The intelligent municipal drainage system of claim 1, wherein: the lateral wall of inspection shaft (2) is provided with lifting hook (9), lifting hook (9) are connected with spring dynamometer (10), the lower extreme of spring dynamometer (10) is provided with spheroid (11), the density of spheroid (11) is greater than the sewage density in secret drainage channel (1), spheroid (11) are located sewage.
5. The intelligent municipal drainage system of claim 1, wherein: the underground drainage channel is characterized in that a laser transmitter is arranged above the water surface of the underground drainage channel (1), a laser receiver (13) is arranged at the turning of the underground drainage channel (1), laser rays (12) transmitted by the laser transmitter are parallel to the water surface of the underground drainage channel (1) and are received by the laser receiver (13), and the laser receiver (13) is in communication connection with a control system.
6. The early warning processing method of the intelligent municipal drainage system according to claim 1, comprising:
the position signal module (4) on each well lid (3) sends the position information of the well lid (3) to the control system, and when the position of the well lid (3) changes, the well lid (3) is indicated to be stolen;
when someone falls into the well, the alarm button (5) of the person falling into the well sends alarm information to the control system, and after receiving the alarm information, the manager organizes rescue according to the position of the alarm button (5) sending out the alarm;
when a person falling into the well is flushed into the underground drainage channel (1) by water flow, a distress sound is sent, two sound sensors (6) which are closest to the person falling into the well receive sound signals and transmit the sound signals to a control system, and assuming that the distances from the position of the person falling into the well to the two closest sound sensors (6) are L1 and L2 respectively, the distress sound alarm can be used according to the distance L between the two closest sound sensors (6), the propagation speed C of sound in the air in the underground drainage channel (1), the time difference delta T of the two sound sensors (6) receiving the sound signals and a formula
L1+L2＝L
L1/C-L2/C＝ΔT
L1 and L2 were calculated to determine the location of the person falling into the well.
7. The early warning processing method of the intelligent municipal drainage system according to claim 6, wherein: a plurality of water wave measuring devices (7) are arranged in the underground drainage channel (1), and each water wave measuring device (7) is in communication connection with a control system;
when the parameters of the sewage in the underground drainage channel (1) need to be measured, weights are thrown into the sewage, the weights enter water to make sound, and water waves are generated at the same time and are transmitted upstream and downstream;
detecting sound by using two nearest sound sensors (6) and calculating a sound production position and a sound production time point;
assuming that the distance from the sounding position to the nearest upstream water wave meter (7) is H1, and the distance from the sounding position to the nearest downstream water wave meter (7) is H2, H1 and H2 can be calculated from the sounding position and the distance H from the upstream water wave meter (7) to the downstream water wave meter (7);
calculating the water wave transmission time according to the sounding time point and the time point of the water wave signal received by the water wave measurer (7);
calculating the upstream transfer speed V1 and the downstream transfer speed V2 of the water waves according to H1, H2 and the water wave transfer time;
according to the formula
V1＝v-(gh)^(0.5)
V2＝v+(gh)^(0.5)
Calculating the sewage speed v and the sewage depth h, wherein g is the gravity acceleration;
and calculating the sewage flow Q according to the sewage speed v and the sewage depth h.
8. The early warning processing method of the intelligent municipal drainage system according to claim 6, wherein: the side wall of the inspection well (2) is provided with a lifting hook (9), the lifting hook (9) is connected with a spring dynamometer (10), the lower end of the spring dynamometer (10) is provided with a ball body (11), the density of the ball body (11) is greater than that of sewage in the underground drainage channel (1), and the ball body (11) is ensured to be positioned in the sewage;
the ball body (11) deflects after being impacted by sewage, the deflection angle is theta,
according to the formula
ρ*π*(d/2)2*v2*cosα＝F1*sinθ
mg+ρ*π*(d/2)2*v2*sinα＝ρ*g*VBall with ball-shaped section+F1*cosθ
Calculating the sewage velocity V and the deflection angle theta, wherein rho is the sewage density, d is the diameter of the ball body (11), alpha is the included angle between the underground drainage channel (1) and the horizontal direction, F1 is the reading of the spring dynamometer (10), m is the mass of the ball body (11), and V isBall with ball-shaped sectionIs the volume of the sphere (11);
according to the formula
v＝1/n*R^(2/3)*I^(0.5)
R＝D/4*(1-sinB/B)
Calculating the hydraulic radius R and the sewage filling angle B of the sewage, wherein n is the roughness of the underground drainage channel (1), I is the gradient of the underground drainage channel (1), and D is the diameter of the underground drainage channel (1);
according to the formula
Q＝A*v
A＝0.5*B*D/2*D/2+0.5*D/2*D/2*sin(2π-B)
And calculating the sewage cross-section area A and the sewage flow Q.
9. The early warning processing method of the intelligent municipal drainage system according to claim 6, wherein: set up intrusion detector (8) on every well lid (3), intrusion detector (8) and control system communication connection, the car rolls well lid (3) and makes sound, and intrusion detector (8) detect sound signal and transmit to control system, when detecting that sound is greater than or equal to 40 decibels, then overhauls well lid (3).
10. The early warning processing method of the intelligent municipal drainage system according to claim 6, wherein: set up laser emitter and laser receiver (13) respectively in two adjacent inspection shafts (2), laser emitter sends laser light (12) towards laser receiver (13), laser light (12) are on a parallel with the sewage surface, laser receiver (13) receive laser light (12) and with laser signal transmission to control system, when someone, thing falls well or underground drainage passageway (1) and is blockked up, the people, the sewage in thing or underground drainage passageway (1) can shelter from laser light (12), laser signal interrupts, control system sends the police dispatch newspaper, managers organizes personnel and patrols and examines underground drainage passageway (1).
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