Distributed Road Dust Monitoring System

Abstract

The present invention discloses a distributed road dust monitoring system, comprising: at least one monitoring terminal unit, a monitoring center and a dispatching center; wherein at least one monitoring terminal unit is used to monitor the road dust concentration according to a preset monitoring period; the monitoring center is connected to at least one monitoring terminal unit, and is used to analyze the data sent by the monitoring terminal unit and plan the operation mode according to the analysis result; the dispatching center is connected to the monitoring center, and is used to complete the cleaning operation according to the operation mode planned by the monitoring center. The distributed road dust monitoring system of the present invention has a reasonable layout, strong real-time performance, cost saving and high working efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of environmental sanitation management, and in particular to a road dust monitoring system. Background Art

[0002] Dust is an open pollution source that enters the atmosphere due to the dust on the ground being blown up by wind, human activities and other factors. It is an important component of the general environmental pollution index total suspended particulate matter (TSP). It not only pollutes the air and affects the environment, but also harms human health. In order to better improve air quality and living environment, dust monitoring systems and monitoring equipment have received more and more attention.

[0003] In the prior art, road dust monitoring equipment is mostly fixed-point monitoring substations or vehicle-mounted mobile monitoring equipment, which makes it difficult to monitor the dust situation of multiple road sections at the same time. Moreover, the current cleaning operations of urban roads generally adopt the method of timed cleaning. When encountering humid weather after rain, it is easy to waste resources due to excessive cleaning; or when encountering dusty and sandy weather, it is easy to cause serious pollution due to untimely cleaning. Therefore, a multi-node, energy-saving and efficient dust monitoring system is needed. Summary of the invention

[0004] In view of the defects of the prior art, the present invention provides a distributed road dust monitoring system, which is used to solve the problems of poor system performance, poor real-time performance, difficult tracking and monitoring, and low working efficiency in the prior art.

[0005] The present invention provides a distributed road dust monitoring system, comprising: at least one monitoring terminal unit, a monitoring center and a dispatching center; wherein the monitoring terminal unit is used to monitor the road dust concentration according to a preset monitoring period; the monitoring center is connected to at least one monitoring terminal unit, and is used to analyze the data sent by the monitoring terminal unit and plan an operation mode according to the analysis result; the dispatching center is connected to the monitoring center, and is used to complete the cleaning operation according to the operation mode planned by the monitoring center.

[0006] Furthermore, the monitoring terminal unit includes a dust sensor, a processor, a first wireless communication module and a power module; wherein the processor includes a clock controller and a memory, the clock controller is connected to the dust sensor, and is used to control the dust sensor to monitor the road dust concentration; the memory is used to store the GPS location information of the monitoring terminal unit and a preset monitoring cycle; the first wireless communication module is connected to the processor, and is used to send the dust concentration and the GPS location information of the monitoring terminal unit to the monitoring center.

[0007] Optionally, there are multiple monitoring terminal units, and the multiple monitoring terminal units are arranged along the road and the distance between adjacent monitoring terminal units is 1 to 2 km.

[0008] Furthermore, the monitoring center includes a second wireless communication module, a judgment module and a planning module; the second wireless communication module is used to receive data sent by the monitoring terminal unit; the judgment module is used to compare the dust concentration with the preset threshold and determine whether cleaning operation is required; and the planning module is used to plan the cleaning operation mode according to the judgment result of the judgment module and the GPS location information of the monitoring terminal unit, and send an operation request to the dispatch center.

[0009] Optionally, the preset threshold is a, where a>0; when the dust concentration monitored by the monitoring terminal unit is ≥a, it indicates that the location where the monitoring terminal unit is located needs to be cleaned, and the monitoring center issues a job request; when the dust concentration monitored by the monitoring terminal unit is <a, it indicates that the location where the monitoring terminal unit is located does not need to be cleaned, and the monitoring center does not issue a job request.

[0010] Optionally, the preset monitoring cycle includes a daily monitoring cycle and an emergency monitoring cycle.

[0011] Optionally, the preset threshold includes a lower threshold a1 and an upper threshold a2, where 0<a1<a2; when the dust concentration monitored by the monitoring terminal unit according to the daily monitoring cycle is <a1, it indicates that no cleaning operation is required at the location of the monitoring terminal unit, and the monitoring center does not issue an operation request; when the dust concentration monitored by the monitoring terminal unit according to the daily monitoring cycle is ≥a1 and <a2, it indicates that daily cleaning operation is required at the location of the monitoring terminal unit, and the monitoring center issues a daily cleaning operation request; when the dust concentration monitored by the monitoring terminal unit according to the daily monitoring cycle is ≥a2, it indicates that emergency cleaning operation is required at the location of the monitoring terminal unit, and the monitoring center issues an emergency cleaning operation request. At the same time, the monitoring center issues an emergency monitoring task to the monitoring terminal unit, and the monitoring terminal unit monitors the dust concentration according to the emergency monitoring cycle.

[0012] Optionally, the monitoring center also includes: a pre-judgment module, which is used to pre-judgment whether the data sent by the received monitoring terminal unit is normal. If normal, the data is output to the judgment module; a display and analysis module, which is connected to the judgment module, and the display and analysis module includes a display screen based on an electronic map. When the judgment module determines that cleaning operations are required, the display screen based on the electronic map combines the GPS location information of the monitoring terminal unit to display the dust concentration value in real time.

[0013] Optionally, the display and analysis module can be further used to analyze whether the judgment results of two adjacent monitoring terminal units both require cleaning operations. If so, the section between the two adjacent monitoring terminal units is presented as a colored highlight on the display screen based on the electronic map.

[0014] Furthermore, the power module includes a power generation unit and an energy storage unit; wherein the power generation unit includes a friction power generation component and / or a solar power generation component; the energy storage unit includes an energy storage element and an AC / DC converter, the first end of the energy storage unit is connected to the power generation unit for storing the electric energy generated by the power generation unit, and the second end of the energy storage unit is connected to the sensor, processor and wireless communication module for providing electric energy to the sensor, processor and wireless communication module.

[0015] Optionally, the friction power generation component is a closed vibration generator based on a friction generator, which is used to collect vibration energy in the environment and convert it into electrical energy; or the friction power generation component is a closed wind generator based on a friction generator, which is used to collect wind energy in the environment and convert it into electrical energy.

[0016] Optionally, a closed vibration generator based on a friction generator includes: a protective cover having a chamber inside; a cantilever beam located in the chamber, the first end of the cantilever beam being fixedly connected to the inner wall of the protective cover, and the second end being configured to be able to perform reciprocating motion under the action of an external force; a plurality of groups of friction power generation components, each group of friction power generation components including a first friction power generation part and a second friction power generation part, wherein the first friction power generation part is fixedly connected to the second end of the cantilever beam, and the second friction power generation part is insulated and arranged on the inner wall of the protective cover, and the surfaces of the first friction power generation part and the second friction power generation part correspond to each other; under the action of an external force, the second end of the cantilever beam drives the first friction power generation part to perform reciprocating motion, so that the corresponding surfaces of the first friction power generation part and the second friction power generation part contact and separate to generate electric charge.

[0017] Optionally, a closed wind turbine based on a friction generator includes at least one friction power generation component, a shell accommodating at least one friction power generation component, a rotating shaft, at least one cam and fan blades; wherein, at least one friction power generation component is fixed on the inner wall of the shell; a part of the rotating shaft is located outside the shell, and another part of the rotating shaft extends into the shell; at least one cam is fixed on the rotating shaft located inside the shell; and the fan blades are fixed at the end of the rotating shaft located outside the shell.

[0018] Optionally, a closed wind turbine based on a friction generator includes a diaphragm that forms a closed cavity and a fixed membrane inside the closed cavity; under the action of external force, the diaphragm and the fixed membrane are in contact and friction to form a friction interface; a first electrode layer and a second electrode layer are formed on the outer surface of the diaphragm, and the first electrode layer and the second electrode layer do not contact each other; the first electrode layer and / or the second electrode layer are electrical signal output terminals.

[0019] Optionally, the solar power generation component is a thin film solar cell, and the thin film solar cell is selected from any one of a GaAs thin film solar cell, a CIS thin film solar cell or a CdTe thin film solar cell.

[0020] Optionally, the energy storage unit also includes an external power port for receiving external power supply.

[0021] According to the distributed road dust monitoring system provided by the present invention, the monitoring terminal units distributed along the roads monitor the road dust situation and send relevant data. The monitoring center receives and processes the data from the monitoring terminal units, determines whether cleaning is needed based on the monitoring results, plans the operation mode of the cleaning operation, and issues an operation request. The dispatching center dispatches vehicles or workers to perform cleaning operations and supervises the quality of the operations in accordance with the requirements of the monitoring center. The distributed road dust monitoring system provided by the present invention can automatically monitor road dust and determine whether cleaning is needed based on the monitoring results. It has the advantages of reasonable layout, strong real-time performance, cost savings, and high work efficiency, and has a positive role and significance for urban environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a functional module schematic diagram of a distributed road dust monitoring system provided in Embodiment 1 of the present invention;

[0023] Figure 2 It is a functional module diagram of a monitoring terminal unit of a distributed road dust monitoring system provided in Embodiment 1 of the present invention;

[0024] Figure 3 It is a structural schematic diagram of a monitoring terminal unit of a distributed road dust monitoring system provided in Embodiment 1 of the present invention;

[0025] Figure 4 It is a schematic structural diagram of a closed vibration generator based on a friction generator provided by an embodiment of the present invention;

[0026] Figure 5 is a schematic structural diagram of a closed wind turbine generator based on a friction generator provided by another embodiment of the present invention;

[0027] Figure 6 is a schematic structural diagram of a closed wind turbine generator based on a friction generator provided by another embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the working method of the distributed road dust monitoring system provided by the first embodiment of the present invention;

[0029] Figure 8 It is a schematic diagram of the working method flow of the distributed road dust monitoring system provided by the second embodiment of the present invention;

[0030] Fig. 9 It is a schematic diagram of the working process of the distributed road dust monitoring system provided in the third embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific implementation methods, but the present invention is not limited thereto.

[0032] Figure 1 This is a schematic diagram of the functional modules of the distributed road dust monitoring system provided in the first embodiment of the present invention. Figure 1 As shown, the distributed road dust monitoring system includes at least one monitoring terminal unit 10, a monitoring center 20 and a dispatching center 30. The monitoring terminal unit 10 is used to monitor the road dust concentration according to a preset monitoring period; the monitoring center 20 is connected to at least one monitoring terminal unit 10, and is used to analyze the data sent by the monitoring terminal unit 10 and plan the operation mode according to the analysis results; the dispatching center 30 is connected to the monitoring center 20, and is used to complete the cleaning operation according to the operation mode planned by the monitoring center 20. Considering the complex structure and various functions of urban roads, the number of monitoring terminal units 10 can also be multiple, and multiple monitoring terminal units 10 are arranged along the road and the spacing between adjacent monitoring terminal units 10 is 1 to 2 km. Specifically, the monitoring terminal unit can be set on the roadside or in the isolation belt of the urban road, which is not specifically limited here.

[0033] Further, Figure 2 and Figure 3 They are respectively a functional module schematic diagram and a structural schematic diagram of a monitoring terminal unit of a distributed road dust monitoring system provided in the first embodiment of the present invention. Figure 2 and Figure 3 As shown, the monitoring terminal unit 10 includes a bracket 15 and a dust sensor 11 , a processor 12 , a first wireless communication module 13 and a power module 14 arranged on the bracket 15 . Among them, the processor 12 includes a clock controller and a memory, the clock controller is connected to the dust sensor 11, and is used to control the dust sensor 11 to monitor the road dust concentration according to a preset monitoring period, and the memory is used to store the GPS location information of the monitoring terminal unit 10 and the preset monitoring period; the first wireless communication module 13 is connected to the processor 12, and is used to send the dust concentration and the GPS location information of the monitoring terminal unit 10 to the monitoring center 20; the power supply module 14 includes a power generation unit 142 and an energy storage unit 141, wherein the power generation unit 142 includes a friction power generation component 1422 and / or a solar power generation component 1421; the energy storage unit 141 includes an energy storage element and an AC / DC converter, the first end of the energy storage unit 141 is connected to the power generation unit 142, and is used to store the electric energy generated by the power generation unit 142, and the second end of the energy storage unit 141 is connected to the dust sensor 11, the processor 12 and the first wireless communication module 13, and is used to provide electric energy to the sensor 11, the processor 12 and the first wireless communication module 13.

[0034] Specifically, the bracket 15 can be fixed to the ground by a fixing seat and bolts to prevent the monitoring terminal unit from tipping over.

[0035] Specifically, the GPS location information of the monitoring terminal unit 10 can be determined, input and stored in the memory by a technician when installing and debugging the monitoring terminal unit 10 .

[0036] Specifically, the preset monitoring period can be remotely set by a technician as needed; preferably, the preset monitoring period can be 5 minutes to 2 hours.

[0037] Optionally, the memory can also be used to store the monitoring terminal unit ID, which at least includes the monitoring terminal unit code, the monitoring unit to which it belongs, and the monitoring network or node information. When the monitoring terminal unit 10 sends the dust concentration and the GPS location information of the monitoring terminal unit 10 to the monitoring center 20, the monitoring terminal unit ID can be sent together for analyzing or evaluating the dust control effect according to the management unit or administrative area.

[0038] In some specific embodiments of the present invention, the friction power generation component 1422 is a closed vibration generator based on a friction generator, which is used to collect vibration energy in the environment and convert it into electrical energy; or the friction power generation component 1422 is a closed wind power generator based on a friction generator, which is used to collect wind energy in the environment and convert it into electrical energy. Its specific structure is as follows:

[0039] Figure 4 A closed vibration generator based on a friction generator provided by an embodiment of the present invention, such as Figure 4 As shown, the closed vibration generator based on the friction generator includes: a protective cover 41 with a chamber inside; a cantilever beam 42 located in the chamber, the first end of the cantilever beam 42 is fixedly connected to the inner wall of the protective cover 41, and the second end is configured to be able to reciprocate under the action of an external force; a plurality of groups of friction power generation components 43, each group of friction power generation components 43 includes a first friction power generation part 431 and a second friction power generation part 432, wherein the first friction power generation part 431 is fixedly connected to the second end of the cantilever beam 42, and the second friction power generation part 432 is insulated and arranged on the inner wall of the protective cover 41, and the surfaces of the first friction power generation part 431 and the second friction power generation part 432 correspond to each other; under the action of an external force (for example, when vibrated), the second end of the cantilever beam 42 drives the first friction power generation part 431 to reciprocate, so that the corresponding surfaces of the first friction power generation part 431 and the second friction power generation part 432 contact and separate to generate electric charge.

[0040] Figure 5 Another embodiment of the present invention provides a closed wind turbine based on a friction generator, such as Figure 5As shown, the closed wind power generator based on the friction generator includes at least one friction power generation component 54, a closed housing 55 accommodating at least one friction power generation component, a rotating shaft 51, at least one cam 53 and a fan blade 52; wherein, at least one friction power generation component 54 is fixed on the inner wall of the closed housing 55; a part of the rotating shaft 51 is located outside the closed housing 55, and another part of the rotating shaft 51 extends into the closed housing 55; at least one cam 53 is fixed on the rotating shaft 51 located inside the closed housing 55; and the fan blade 52 is fixed at the end of the rotating shaft 51 located outside the closed housing 55. Each cam 53 has a plurality of protrusions. When the fan blade 52 drives the cam 53 to rotate through the rotating shaft 51, the ends of the plurality of protrusions squeeze the friction power generation component 54. Each friction power generation component 54 includes a first friction power generation part and a second friction power generation part. Under the squeezing force of the ends of the protrusions, the surfaces corresponding to each other of the first friction power generation part and the second friction power generation part contact and separate to generate electric charge.

[0041] In the above Figure 4 and Figure 5 In the illustrated embodiment, the friction power generation component can be selected from the friction power generation components in the existing friction generator technology. Specifically, the first friction power generation unit includes: a first electrode layer, and the second friction power generation unit includes: a first high molecular polymer insulating layer and a second electrode layer arranged in sequence; or, the first friction power generation unit includes: a first electrode layer and a second high molecular polymer insulating layer arranged in sequence, and the second friction power generation unit includes: a first high molecular polymer insulating layer and a second electrode layer arranged in sequence; or, the first friction power generation unit includes: a first electrode layer and a second high molecular polymer insulating layer arranged in sequence, and the second friction power generation unit includes: an intermediate film layer, a first high molecular polymer insulating layer and a second electrode layer arranged in sequence; or, the first friction power generation unit includes: a first electrode layer and a second high molecular polymer insulating layer arranged in sequence, and the second friction power generation unit includes: an intermediate electrode layer, a first high molecular polymer insulating layer and a second electrode layer arranged in sequence. Among them, the first electrode layer and the second electrode layer are the power output ends of the friction power generation component; the first friction power generation unit and the second friction power generation unit contact and separate with each other under the action of external force to generate alternating current.

[0042] Figure 6 A closed wind turbine based on a friction generator provided by another embodiment of the present invention, such as Figure 6As shown, the closed wind turbine based on the friction generator includes a diaphragm 62 that forms a closed cavity and a fixed film 63 inside the closed cavity; under the action of external force, the diaphragm 62 and the fixed film 63 contact and rub to form a friction interface; the outer surface of the diaphragm 62 is formed with a first electrode layer 61 and a second electrode layer 64, and the first electrode layer 61 and the second electrode layer 64 do not contact each other; the first electrode layer 61 and / or the second electrode layer 64 are electrical signal output terminals. When the diaphragm 62 is acted upon by an external force, the diaphragm 62 and the fixed film 63 rub against each other to generate electric charges, thereby causing a potential difference between the first electrode layer 61 and the second electrode layer 64. Due to the existence of the potential difference between the first electrode layer 61 and the second electrode layer 64, free electrons will flow from the side with low potential to the side with high potential through the external circuit, thereby forming a current in the external circuit; when the diaphragm 62 returns to its original state, the internal potential formed between the first electrode layer 61 and the second electrode layer 64 disappears, and a reverse potential difference will be generated again between the first electrode layer 61 and the second electrode layer 64 that have been balanced. The free electrons will form a reverse current through the external circuit, thereby forming an alternating current signal in the external circuit.

[0043] In the above embodiments, the friction power generation component can be selected from the friction materials in the existing friction generator technology. Specifically, the materials of the first electrode layer, the second electrode layer and the intermediate electrode layer are selected from indium tin oxide, graphene, silver nanowire film, metal or alloy. The metal is gold, silver, platinum, palladium, aluminum, nickel, copper, titanium, chromium, tin, iron, manganese, molybdenum, tungsten or vanadium; the alloy is aluminum alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, zinc alloy, manganese alloy, nickel alloy, lead alloy, tin alloy, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy. The materials of the first high molecular polymer insulating layer, the second high molecular polymer insulating layer, the intermediate film layer, the diaphragm and the fixed film are respectively selected from one of polyimide film, aniline formaldehyde resin film, polyformaldehyde film, ethyl cellulose film, polyamide film, melamine formaldehyde film, polyethylene glycol succinate film, cellulose film, cellulose acetate film, polyethylene adipate film, polydiallyl phthalate film, fiber sponge film, polyurethane elastomer film, styrene propylene copolymer film, styrene butadiene copolymer film, artificial fiber film, polymethyl film, methacrylate film, polyvinyl alcohol film, polyester film, polyisobutylene film, polyurethane flexible sponge film, polyethylene terephthalate film, polyvinyl butyral film, formaldehyde phenol film, chloroprene rubber film, butadiene propylene copolymer film, natural rubber film, polyacrylonitrile film, acrylonitrile vinyl chloride film and polyethylene bisphenol carbonate film.

[0044] Specifically, the solar power generation component 1421 is arranged at the top of the bracket, preferably a thin film solar cell, for converting solar energy into electrical energy. The thin film solar cell is selected from any one of GaAs thin film solar cells, CIS thin film solar cells, and CdTe thin film solar cells, and those skilled in the art can select according to actual needs.

[0045] Optionally, the energy storage unit 141 further includes an external power port for receiving external power supply.

[0046] Specifically, the energy storage element includes a battery, a lithium battery, a nickel-hydrogen battery or a supercapacitor.

[0047] Specifically, the input end of the AC / DC converter is connected to the friction power generation component 1422, and the output end is connected to the energy storage element, so as to convert the AC power generated by the friction power generation component 1422 into DC power.

[0048] Optionally, in order to prevent external environmental factors from affecting the normal operation of the monitoring terminal unit 10, a waterproof protective layer is provided on the outside of each circuit module in the present solution, for example, it is completely wrapped with corresponding waterproof materials. Of course, other waterproof treatments can also be used, such as sealing with waterproof glue, so as to ensure the normal operation of the monitoring terminal unit 10.

[0049] Optionally, the monitoring terminal unit 10 may also be loaded with other sensors such as a temperature sensor, a humidity sensor, a wind direction sensor or a wind force sensor, which are not specifically limited here.

[0050] Furthermore, if Figure 7 As shown, the monitoring center 20 provided in the first embodiment of the present invention includes a second wireless communication module 71, a judgment module 72 and a planning module 73; wherein the second wireless communication module 71 is used to receive data sent by the monitoring terminal unit 10, and the data sent by the monitoring terminal unit includes dust concentration and GPS location information; the judgment module 72 is used to compare the dust concentration with the preset threshold and determine whether cleaning operation is required; the planning module 73 is used to plan the cleaning operation mode and cleaning operation route according to the judgment result of the judgment module 72 and the GPS location information of the monitoring terminal unit 10, and send an operation request to the dispatch center 30.

[0051] Specifically, the preset threshold value of the dust concentration in the monitoring center 20 is a, where a>0; the judgment module 72 compares the dust concentration monitored by the monitoring terminal unit 10 with the preset threshold value a. When the dust concentration is ≥a, it indicates that the location where the monitoring terminal unit 10 is located needs to be cleaned, and the monitoring center 20 issues an operation request; when the dust concentration is <a, it indicates that the location where the monitoring terminal unit 10 is located does not need to be cleaned, and the monitoring center 20 does not issue an operation request.

[0052] Optionally, the actual value of the preset threshold a can be set according to local climate characteristics and environmental quality requirements. For example, the preset threshold a is set to 0.2 mg / m 3 When the dust concentration is ≥ 0.2mg / m 3 When the dust concentration is less than 0.2 mg / m 3 , it indicates that the location of the monitoring terminal unit 10 does not need to be cleaned, and the monitoring center 20 does not issue an operation request.

[0053] Optionally, the planning module 73 also needs to plan the cleaning operation mode in combination with the actual situation of the cleaning vehicles and cleaning workers, for example, the cleaning operation mode can be a watering and dust reduction operation or a sweeping operation. In addition, the planning module 73 can also plan the cleaning operation route in combination with the actual situation of the cleaning vehicles and cleaning workers.

[0054] Furthermore, the dispatch center 30 dispatches vehicles or workers according to the operation mode planned by the monitoring center 20 to clean the road sections that need cleaning in time and supervise the operation quality. Optionally, the dispatch center 30 may also be included in the monitoring center 20.

[0055] Optionally, the wireless communication functions of the first wireless communication module 13 and the second wireless communication module 71 in this embodiment can be implemented based on technologies such as digital radio, GPRS / CDMA or satellite communication, which is not specifically limited here.

[0056] Combine the following Figure 7 The working method flow chart of the first embodiment of the distributed road dust monitoring system provided by the present invention is described in detail, including the following steps:

[0057] Step S701, monitoring road dust concentration according to a preset monitoring period.

[0058] The dust sensor 11 arranged in the monitoring terminal unit 10 is controlled by a clock controller arranged in the monitoring terminal unit 10 to monitor the road dust concentration according to a preset monitoring period. For example, the preset monitoring period is 1 hour.

[0059] Step S702, sending data to a monitoring center.

[0060] The first wireless communication module 13 provided in the monitoring terminal unit 10 sends dust concentration data, monitoring terminal unit GPS location information data and monitoring terminal unit ID data to the monitoring center 20 .

[0061] Step S703, receiving data sent by the monitoring terminal unit.

[0062] The second wireless communication module 71 disposed in the monitoring center 20 receives dust concentration data, GPS location information data of the monitoring terminal unit 10 and ID data of the monitoring terminal unit 10 .

[0063] Step S704, comparing the dust concentration with a preset threshold and determining whether cleaning is required.

[0064] The judgment module 72 disposed in the monitoring center 20 compares the dust concentration data at the location of the monitoring terminal unit 10 received by the second wireless communication module 71 with the preset threshold value. For example, the preset threshold value is the 24-hour average concentration limit value of total suspended particulate matter (TSP) of Class II areas (residential areas, commercial and traffic mixed areas, cultural areas, industrial areas and rural areas) in the GB3095-2012 ambient air quality standard of 0.3 mg / m 3 ; When the dust concentration is ≥0.3mg / m 3 When the dust concentration is less than 0.3 mg / m 3 , it indicates that no cleaning operation is required at the location of the monitoring terminal unit 10.

[0065] Step S705, planning the cleaning operation mode and route.

[0066] When the judgment result of the judgment module 72 set in the monitoring center 20 is that cleaning operation is required at the location of the monitoring terminal unit 10, the planning module 73 set in the monitoring center 20 plans the cleaning operation method and cleaning operation route according to the GPS location information of the monitoring terminal unit 10 and the actual situation of the cleaning vehicle and the cleaning workers.

[0067] Step S706: Send a job request to the scheduling center.

[0068] The planning module 73 disposed in the monitoring center 20 sends a cleaning operation request to the dispatching center 30 according to the planning result.

[0069] Step S707, dispatch vehicles or workers to perform operations and monitor quality.

[0070] The dispatch center 30 dispatches cleaning vehicles and / or cleaning workers to complete the cleaning work in a timely manner and supervises the quality of the cleaning work.

[0071] Furthermore, in order to meet the needs of road dust monitoring in large cities and facilitate the simultaneous processing of data from a large number of monitoring terminal units, a distributed road dust monitoring system provided in the second embodiment of the present invention is as follows: Figure 8As shown, the distributed road dust monitoring system in the second embodiment is based on the distributed road dust monitoring system provided in the first embodiment, and further adds a pre-judgment module 81 and a display and analysis module 82, wherein the pre-judgment module 81 is used to pre-judgment whether the data sent by the monitoring terminal unit 10 is normal, and if normal, the data is output to the judgment module 72; the display and analysis module 82 is connected to the judgment module 72, including a display screen based on an electronic map, and when the judgment module 72 determines that a cleaning operation is required, the display screen based on the electronic map combines the GPS location information of the monitoring terminal unit 10 to display the dust concentration value in real time. Further, the display and analysis module 82 can also be used to analyze whether the judgment results of two adjacent monitoring terminal units 10 are both required to be cleaned. If so, the road section between the two adjacent monitoring terminal units 10 is presented as a colored highlight on the display screen based on the electronic map. This setting method enables the staff of the monitoring center to more intuitively see which road sections are suffering from dust pollution, so as to more quickly and conveniently determine the road sections that need to be cleaned.

[0072] The other descriptions in the second embodiment can refer to the descriptions in the first embodiment and will not be repeated here.

[0073] Combine the following Figure 8 The working method flow chart of the distributed road dust monitoring system provided in the second embodiment of the present invention is specifically described, including the following steps:

[0074] Step S801, monitoring road dust concentration according to a preset monitoring period.

[0075] The dust sensor 11 installed in the monitoring terminal unit 10 is controlled by a clock controller installed in the monitoring terminal unit 10 to monitor the road dust concentration according to a preset monitoring period. For example, the preset monitoring period is 30 minutes.

[0076] Step S802, sending data to a monitoring center.

[0077] The first wireless communication module 13 provided in the monitoring terminal unit 10 sends dust concentration data, monitoring terminal unit GPS location information data and monitoring terminal unit ID data to the monitoring center 20 .

[0078] Step S803, receiving data sent by the monitoring terminal unit.

[0079] The second wireless communication module 71 disposed in the monitoring center 20 receives dust concentration data, GPS location information data of the monitoring terminal unit 10 and ID data of the monitoring terminal unit 10 .

[0080] Step S804, determining whether the received data is normal.

[0081] The pre-judgment module 81 disposed in the monitoring center 20 pre-judgments whether the received data sent by the monitoring terminal unit 10 is normal. If it is normal, step S805 is executed; if it is abnormal, step S811 is executed.

[0082] Step S805, comparing the dust concentration with a preset threshold and determining whether cleaning is required.

[0083] The judgment module 72 set in the monitoring center 20 compares the dust concentration data at the location of the monitoring terminal unit 10 received by the second wireless communication module 71 with the preset threshold value. The preset threshold value is the urban road dust concentration limit value of 0.2 mg / m set by the government department of City A. 3 ; When the dust concentration is ≥0.2mg / m 3 When the dust concentration is less than 0.2 mg / m 3 , it indicates that no cleaning operation is required at the location of the monitoring terminal unit 10.

[0084] Step S806: Display the dust concentration value in real time.

[0085] When the judgment module 72 set in the monitoring center 20 determines that cleaning operation is required, the display and analysis module 82 set in the monitoring center 20, combined with the GPS location information of the monitoring terminal unit 10, displays the dust concentration value of the location of each monitoring terminal unit 10 in real time on a display screen based on an electronic map.

[0086] Step S807: analyzing and highlighting the road sections that need to be cleaned.

[0087] The display and analysis module 82 set up in the monitoring center 20 analyzes the dust concentration at the locations of two adjacent monitoring terminal units 10 to determine whether cleaning operations are required. If so, the road section between the two adjacent monitoring terminal units 10 is highlighted in yellow on the display screen based on the electronic map, indicating that the road section is polluted by dust and needs to be cleaned.

[0088] Step S808, planning the cleaning operation mode and route.

[0089] When the judgment result of the judgment module 72 set in the monitoring center 20 is that cleaning operation is required at the location of the monitoring terminal unit 10, the planning module 73 set in the monitoring center 20 plans the cleaning operation method and cleaning operation route according to the GPS location information of the monitoring terminal unit 10 and the actual situation of the cleaning vehicle and the cleaning workers.

[0090] Step S809: Send a job request to the scheduling center.

[0091] The planning module 73 disposed in the monitoring center 20 sends a cleaning operation request to the dispatching center 30 according to the planning result.

[0092] Step S810, dispatching vehicles or workers to perform operations and supervising quality.

[0093] The dispatch center 30 dispatches cleaning vehicles and / or cleaning workers to complete the cleaning work in a timely manner and supervises the quality of the cleaning work.

[0094] Step S811, reporting the abnormality of the monitoring terminal.

[0095] When the pre-judgment module 81 disposed in the monitoring center 20 determines that the data sent by the monitoring terminal unit 10 is abnormal, the pre-judgment module 81 disposed in the monitoring center 20 reports the abnormality of the monitoring terminal and reports the monitoring terminal unit ID at the same time.

[0096] Step S812: Send someone to diagnose and restore the monitoring terminal.

[0097] The monitoring center 20 processes the report from the pre-judgment module 81 about the abnormality of the monitoring terminal unit 10, dispatches a technician to diagnose the cause, such as insufficient remaining power, and promptly restores the monitoring terminal unit 10 to a normal state.

[0098] According to the distributed road dust monitoring system provided by the second embodiment of the present invention, when the monitoring center is running, first, the pre-judgment module pre-judgments whether the data sent by the monitoring terminal unit is normal, so that the abnormality of the monitoring terminal unit can be discovered in time, the error caused by the monitoring terminal unit can be effectively controlled, and the system accuracy can be improved; secondly, the judgment module compares the dust concentration with the preset threshold and judges whether a cleaning operation is required; thirdly, the display and analysis module displays the dust concentration value on the display screen based on the electronic map, which can be displayed according to the GPS location information of the monitoring terminal unit for easy viewing, and the dust concentration data can be updated in real time, and then the display and analysis module further analyzes whether the judgment results of the two adjacent monitoring terminal units are both required to perform cleaning operations. If so, the road section between the two adjacent monitoring terminal units is presented as a colored highlight on the display screen based on the electronic map, which is convenient for planning cleaning methods and routes; finally, the planning module plans the cleaning operation method and sends an operation request to the dispatching center. The distributed road dust monitoring system provided by the second embodiment of the present invention has accurate monitoring data and high efficiency when completing large-scale urban road dust monitoring tasks.

[0099] In order to actively respond to and participate in handling emergency dust events and to do a good job of cleaning up in a targeted manner, such as dust out of control events at construction sites or smoke diffusion events caused by fires in buildings, the third embodiment of the present invention provides a distributed road dust monitoring system. In the third embodiment, the distributed road dust monitoring system is based on the second embodiment above, and the preset monitoring period of the monitoring terminal unit 10 is further set to include a daily monitoring period and an emergency monitoring period, which is used to distinguish the frequency of monitoring dust concentration by the monitoring terminal unit 10 during daily monitoring tasks and emergency monitoring tasks. It can be understood that the emergency monitoring period is set to be less than the daily monitoring period, for example, the daily monitoring period is set to 1 hour, and the emergency monitoring period is set to 5 minutes. Therefore, when the monitoring terminal unit 10 performs a daily monitoring task, the monitoring terminal unit 10 performs dust concentration monitoring at a time interval of 1 hour, and when the monitoring terminal unit 10 performs an emergency monitoring task, the monitoring terminal unit 10 performs dust concentration monitoring at a time interval of 5 minutes.

[0100] The preset threshold value of dust concentration set by the monitoring center 20 in the third embodiment of the present invention includes a lower threshold a1 and an upper threshold a2, wherein 0<a1<a2. When the dust concentration monitored by the monitoring terminal unit 10 according to the daily monitoring cycle is <a1, it indicates that the road section where the monitoring terminal unit 10 is located does not need to be cleaned, and the monitoring center 20 does not issue an operation request; when the dust concentration monitored by the monitoring terminal unit 10 according to the daily monitoring cycle is ≥a1 and <a2, it indicates that the road section where the monitoring terminal unit 10 is located needs to be cleaned daily, and the monitoring center 20 issues a daily cleaning operation request; when the dust concentration monitored by the monitoring terminal unit 10 according to the daily monitoring cycle is ≥a2, it indicates that the road section where the monitoring terminal unit 10 is located needs to be cleaned urgently, and the monitoring center 20 issues an emergency cleaning operation request, and at the same time, the monitoring center 20 issues an emergency monitoring task to the monitoring terminal unit 10, and the monitoring terminal unit 10 performs dust concentration monitoring according to the emergency monitoring cycle.

[0101] Optionally, the actual values ​​of the preset thresholds a1 and a2 can be set according to local climate characteristics and environmental quality requirements. For example, specifically, the lower limit of the threshold is 0.2 mg / m 3 The upper threshold is 2 mg / m set by the environmental sanitation management department of City B. 3 When the dust concentration monitored by the monitoring terminal unit 10 according to the daily monitoring cycle is less than 0.2mg / m 3 When the dust concentration monitored by the monitoring terminal unit 10 according to the daily monitoring cycle is ≥ 0.2 mg / m 3 And <2mg / m 3When the monitoring terminal unit 10 detects dust concentration ≥ 2 mg / m 3 When , it indicates that the road section where the monitoring terminal unit 10 is located needs emergency cleaning operation, and the monitoring center 20 issues an emergency cleaning operation request. At the same time, the monitoring center 20 issues an emergency monitoring task to the monitoring terminal unit 10, and the monitoring terminal unit 10 monitors the dust concentration according to the emergency monitoring cycle.

[0102] The other descriptions in the third embodiment can refer to the descriptions in the second embodiment and will not be repeated here.

[0103] Fig. 9 1 is a schematic diagram of the working method of the third embodiment of the distributed road dust monitoring system provided by the present invention. Fig. 9 As shown, the method comprises the following steps:

[0104] Step S901, determining whether an emergency monitoring task has been received.

[0105] Before starting to monitor the dust concentration, the monitoring terminal unit 10 pre-determines whether an emergency monitoring task issued by the monitoring center 20 has been received. If no emergency monitoring task has been received, daily monitoring is performed, that is, step S902 is executed; if an emergency monitoring task has been received, emergency monitoring is performed, that is, step S916 is executed.

[0106] Step S902: monitor the road dust concentration according to the daily monitoring cycle.

[0107] When performing daily monitoring, the dust sensor 11 provided in the monitoring terminal unit 10 is controlled by the clock controller provided in the monitoring terminal unit 10 to monitor the road dust concentration according to the daily monitoring cycle. For example, the daily monitoring cycle is 2 hours.

[0108] Step S903, sending daily monitoring data to the monitoring center.

[0109] When performing daily monitoring, the first wireless communication module 13 provided in the monitoring terminal unit 10 sends daily monitoring dust concentration data, monitoring terminal unit GPS location information data and monitoring terminal unit ID data to the monitoring center 20 .

[0110] Step S904, receiving daily monitoring data sent by the monitoring terminal unit.

[0111] When performing daily monitoring, the second wireless communication module 71 provided in the monitoring center 20 receives daily monitoring dust concentration data, GPS location information data of the monitoring terminal unit 10 and ID data of the monitoring terminal unit 10 .

[0112] Step S905, determining whether the received daily monitoring data is normal.

[0113] When performing daily monitoring, the pre-judgment module 81 set in the monitoring center 20 pre-judgments whether the received daily monitoring data sent by the monitoring terminal unit 10 is normal. If normal, step S906 is executed; if abnormal, step S913 is executed.

[0114] Step S906, comparing the daily monitored dust concentration with the lower threshold and determining whether cleaning is required.

[0115] When performing daily monitoring, the judgment module 72 set in the monitoring center 20 compares the daily monitoring dust concentration data at the location of the monitoring terminal unit 10 received by the second wireless communication module 71 with the size of the lower threshold, for example, the lower threshold is 0.2mg / m 3 ; When the daily monitored dust concentration is ≥ 0.2mg / m 3 When the dust concentration is less than 0.2 mg / m 3 , it indicates that no cleaning operation is required at the location of the monitoring terminal unit 10.

[0116] Step S907, further comparing the daily monitored dust concentration with the upper threshold value and determining whether daily or emergency cleaning operations are required.

[0117] When performing daily monitoring, the judgment module 72 set in the monitoring center 20 further compares the daily monitoring dust concentration data at the location of the monitoring terminal unit 10 received by the second wireless communication module 71 with the upper threshold value. For example, the upper threshold value is 2 mg / m 3 ; When the dust concentration is ≥2mg / m 3 When the dust concentration is greater than 0.2 mg / m 3 And <2mg / m 3 , it indicates that the location of the monitoring terminal unit 10 is subject to general dust pollution and requires daily cleaning.

[0118] Step S908, real-time display of daily monitored dust concentration values.

[0119] When daily monitoring is performed and the judgment module 72 set in the monitoring center 20 determines that daily cleaning operations are required, the display and analysis module 82 set in the monitoring center 20, combined with the GPS location information of the monitoring terminal unit 10, displays the daily dust concentration value of the location of each monitoring terminal unit 10 in real time on a display screen based on an electronic map.

[0120] Step S909, analyzing and highlighting the road sections that require daily cleaning operations.

[0121] When daily monitoring is performed and the judgment module 72 set in the monitoring center 20 determines that daily cleaning operations are required, the display and analysis module 82 set in the monitoring center 20 analyzes the daily monitoring dust concentration judgment results of the locations of two adjacent monitoring terminal units 10 to determine whether cleaning operations are required. If so, the road section between the two adjacent monitoring terminal units 10 is displayed as a yellow highlight on the display screen based on the electronic map.

[0122] Step S910, planning daily cleaning operation methods and routes.

[0123] When daily monitoring is performed and the judgment module 72 set in the monitoring center 20 determines that daily cleaning operations are required, the planning module 73 set in the monitoring center 20 plans the daily cleaning operation mode and daily cleaning operation route according to the GPS location information of the monitoring terminal unit 10 and the actual situation of the cleaning vehicles and cleaning workers.

[0124] Step S911: Send a daily operation request to the dispatch center.

[0125] When daily monitoring is performed and the judgment module 72 disposed in the monitoring center 20 determines that daily cleaning operations are required, the planning module 73 disposed in the monitoring center 20 sends a daily cleaning operation request to the dispatching center 30 according to the planning result.

[0126] Step S912, dispatching vehicles or workers to perform operations and supervising quality.

[0127] The dispatch center 30 dispatches cleaning vehicles and / or cleaning workers to complete the cleaning work in a timely manner and supervises the quality of the cleaning work.

[0128] Step S913, reporting the abnormality of the monitoring terminal.

[0129] When the pre-judgment module 81 disposed in the monitoring center 20 determines that the data sent by the monitoring terminal unit 10 is abnormal, the pre-judgment module 81 disposed in the monitoring center 20 reports the abnormality of the monitoring terminal and reports the monitoring terminal unit ID at the same time.

[0130] Step S914: Send someone to diagnose and restore the monitoring terminal.

[0131] The monitoring center 20 processes the report from the pre-judgment module 81 about the abnormality of the monitoring terminal unit 10, dispatches a technician to diagnose the cause, such as insufficient remaining power, and promptly restores the monitoring terminal unit 10 to a normal state.

[0132] Step S915: issuing an emergency monitoring task.

[0133] When the judgment module 72 disposed in the monitoring center 20 determines that emergency cleaning operations are required, the second wireless communication module 71 disposed in the monitoring center 20 issues an emergency monitoring task to the monitoring terminal unit 10 at a location where the dust concentration exceeds the upper threshold value.

[0134] Step S916, monitoring the road dust concentration according to the emergency monitoring cycle.

[0135] When emergency monitoring is performed, the clock controller arranged in the monitoring terminal unit 10 controls the dust sensor 11 arranged in the monitoring terminal unit 10 to monitor the road dust concentration according to the emergency monitoring cycle. For example, the emergency monitoring cycle is 5 minutes.

[0136] Step S917, sending emergency monitoring data to the monitoring center.

[0137] When emergency monitoring is performed, the first wireless communication module 13 provided in the monitoring terminal unit 10 sends emergency monitoring dust concentration data, monitoring terminal unit GPS location information data and monitoring terminal unit ID data to the monitoring center 20 .

[0138] Step S918, receiving emergency monitoring data sent by the monitoring terminal unit.

[0139] When emergency monitoring is performed, the second wireless communication module 71 provided in the monitoring center 20 receives emergency monitoring dust concentration data, GPS location information data of the monitoring terminal unit 10 and ID data of the monitoring terminal unit 10 .

[0140] Step S919, determining whether the received emergency monitoring data is normal.

[0141] When emergency monitoring is performed, the pre-judgment module 81 provided in the monitoring center 20 pre-judgments whether the emergency monitoring data received from the monitoring terminal unit 10 is normal. If normal, step S920 is executed; if abnormal, step S913 is executed.

[0142] Step S920, compare the emergency monitoring dust concentration with the upper threshold value and determine whether emergency cleaning operations are required.

[0143] When emergency monitoring is performed, the judgment module 72 set in the monitoring center 20 compares the emergency monitoring dust concentration data at the location of the monitoring terminal unit 10 received by the second wireless communication module 71 with the upper threshold value. For example, the upper threshold value is 2 mg / m 3 ; When the emergency monitoring dust concentration is ≥2mg / m 3 When the dust concentration is less than 2 mg / m 3 , it indicates that the dust concentration at the location of the monitoring terminal unit 10 has been effectively controlled and emergency cleaning operations are no longer required. At this time, the emergency monitoring task is completed and the monitoring terminal unit 10 returns to the daily monitoring state.

[0144] Step S921, real-time display of emergency monitoring dust concentration values.

[0145] When emergency monitoring is performed and the judgment module 72 arranged in the monitoring center 20 determines that emergency cleaning operations are required, the display and analysis module 82 arranged in the monitoring center 20, combined with the GPS location information of the monitoring terminal unit 10, displays the emergency monitoring dust concentration value of the location of each monitoring terminal unit 10 in real time on a display screen based on an electronic map; and the dust concentration value exceeding the upper threshold value is displayed as a red highlight.

[0146] Step S922: Analyze and highlight the road sections that require emergency cleaning operations.

[0147] When emergency monitoring is performed and the judgment module 72 set in the monitoring center 20 determines that emergency cleaning operations are required, the display and analysis module 82 set in the monitoring center 20 analyzes whether the emergency monitoring dust concentration judgment results at the locations of two adjacent monitoring terminal units 10 both require cleaning operations. If so, the section between the two adjacent monitoring terminal units 10 is displayed as a red highlight on the display screen based on the electronic map.

[0148] Step S923, planning the emergency cleaning operation method and route.

[0149] When emergency monitoring is performed and the judgment module 72 set in the monitoring center 20 determines that emergency cleaning operations are required, the planning module 73 set in the monitoring center 20 plans the emergency cleaning operation mode and emergency cleaning operation route according to the GPS location information of the monitoring terminal unit 10 and the actual situation of the cleaning vehicles and cleaning workers, so as to strengthen the cleaning of severely polluted sections of the road.

[0150] Step S924: Send an emergency operation request to the dispatch center.

[0151] When emergency monitoring is performed and the judgment module 72 set in the monitoring center 20 determines that emergency cleaning operations are required, the planning module 73 set in the monitoring center 20 sends an emergency cleaning operation request to the dispatching center 30 according to the planning result and continues to execute step S912.

[0152] Optionally, according to the distributed road dust monitoring system provided by the present invention, the monitoring center may also receive a dust event processing task issued by a superior department, and step S915 is executed at this time. Specifically, when the monitoring center receives a dust event processing task, the second wireless communication module simultaneously issues an emergency monitoring task to all monitoring terminal units within the task range, and the corresponding monitoring terminal units start emergency monitoring.

[0153] The distributed road dust monitoring system provided by the embodiment of the present invention can automatically monitor road dust and judge whether it needs to be cleaned according to the monitoring results. It has the advantages of reasonable layout, strong real-time performance, cost saving, and high work efficiency, and has a positive role and significance for urban environmental protection. In addition, the monitoring terminal unit in the distributed road dust monitoring system provided by the present invention collects energy from the environment through a friction generator and a solar cell for power supply, without the need for an external power supply, which is energy-saving and environmentally friendly.

[0154] The various modules and circuits mentioned in the present invention are all circuits implemented by hardware. Although some of the modules and circuits integrate software, what the present invention wants to protect is the hardware circuit that integrates the functions corresponding to the software, not just the software itself.

[0155] Those skilled in the art should understand that the device structures shown in the drawings or embodiments are merely schematic and represent logical structures, wherein modules shown as separate components may or may not be physically separated, and components shown as modules may or may not be physical modules.

[0156] Finally, it should be noted that the above examples are only specific implementation examples of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and variations fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. A distributed road dust monitoring system, It is characterized in that It includes at least one monitoring terminal unit, a monitoring center and a dispatching center; wherein, The at least one monitoring terminal unit is used to monitor the road dust concentration according to a preset monitoring period; The monitoring center is connected to the at least one monitoring terminal unit and is used to analyze the data sent by the monitoring terminal unit and plan the operation mode according to the analysis results; The dispatch center is connected to the monitoring center and is used to complete the cleaning operation according to the operation method planned by the monitoring center; Before starting to monitor the dust concentration, the monitoring terminal unit determines whether an emergency monitoring task issued by the monitoring center has been received; if no emergency monitoring task has been received, daily monitoring is performed; if an emergency monitoring task has been received, emergency monitoring is performed; When performing daily monitoring, the dust sensor arranged in the monitoring terminal unit is controlled by the clock controller arranged in the monitoring terminal unit to monitor the road dust concentration according to the daily monitoring cycle; The first wireless communication module provided in the monitoring terminal unit sends the daily monitoring dust concentration data, the monitoring terminal unit GPS location information and the monitoring terminal unit ID data to the monitoring center; The second wireless communication module arranged in the monitoring center receives the daily monitoring dust concentration data, the monitoring terminal unit GPS location information and the monitoring terminal unit ID data; The judgment module set in the monitoring center compares the daily monitoring dust concentration data with the lower threshold a1 and the upper threshold a2, wherein 0<a1<a2; When the daily monitored dust concentration data is less than a1, it indicates that the location of the monitoring terminal unit does not need to be cleaned, and the monitoring center does not issue an operation request; When the daily monitoring dust concentration data is ≥ a1 and < a2, it indicates that the location of the monitoring terminal unit needs to perform daily cleaning operations, and the monitoring center issues a daily cleaning operation request. The daily cleaning operation is a daily cleaning operation mode and daily cleaning operation route planned according to the GPS location information of the monitoring terminal unit and the actual situation of the cleaning vehicles and cleaning workers; When the daily monitored dust concentration data is ≥ a2, it indicates that the location of the monitoring terminal unit needs to be cleaned in an emergency, and the monitoring center issues an emergency cleaning operation request. The emergency cleaning operation is to plan the emergency cleaning operation mode and emergency cleaning operation route according to the GPS location information of the monitoring terminal unit 10 and the actual situation of the cleaning vehicle and the cleaning worker. At the same time, the monitoring center issues an emergency monitoring task to the monitoring terminal unit, and the monitoring terminal unit performs dust concentration monitoring according to the emergency monitoring cycle; When emergency monitoring is performed, the dust sensor arranged in the monitoring terminal unit is controlled by the clock controller arranged in the monitoring terminal unit to monitor the road dust concentration according to the emergency monitoring cycle; The first wireless communication module provided in the monitoring terminal unit sends the emergency monitoring dust concentration data, the monitoring terminal unit GPS location information and the monitoring terminal unit ID data to the monitoring center; The second wireless communication module provided in the monitoring center receives the emergency monitoring dust concentration data, the monitoring terminal unit GPS location information and the monitoring terminal unit ID data; The judgment module arranged in the monitoring center compares the emergency monitoring dust concentration data with the upper limit a2 of the threshold value; When the emergency monitoring dust concentration is ≥ a2, it means that the location of the monitoring terminal unit is seriously polluted by dust and emergency cleaning operations are required; When the emergency monitoring dust concentration is less than a2, it indicates that the dust concentration at the location of the monitoring terminal unit has been effectively controlled and emergency cleaning operations are no longer required. The emergency monitoring task is completed and the monitoring terminal unit returns to the daily monitoring state.

2. The distributed road dust monitoring system according to claim 1, It is characterized in that The at least one monitoring terminal unit also includes a processor and a power supply module; wherein, The processor includes a clock controller and a memory, and the memory is used to store the GPS location information of the monitoring terminal unit and a preset monitoring cycle.

3. The distributed road dust monitoring system according to claim 2, It is characterized in that There are multiple monitoring terminal units, which are arranged along the road and the distance between adjacent monitoring terminal units is 1 to 2 km.

4. The distributed road dust monitoring system according to claim 1, It is characterized in that The monitoring center also includes a planning module; The planning module is used to plan a cleaning operation mode according to the judgment result of the judgment module and the GPS location information of the monitoring terminal unit, and send an operation request to the dispatch center.

5. The distributed road dust monitoring system according to any one of claims 1 to 4, It is characterized in that The monitoring center also includes: A pre-judgment module, the pre-judgment module is used to pre-judgment whether the received data sent by the monitoring terminal unit is normal, and if normal, output the data to the judgment module; A display and analysis module is connected to the judgment module, and the display and analysis module includes a display screen based on an electronic map. When the judgment module determines that cleaning operations are required, the display screen based on the electronic map combines the GPS location information of the monitoring terminal unit to display the dust concentration value in real time.

6. The distributed road dust monitoring system according to claim 5, It is characterized in that The display and analysis module can also be further used to analyze whether the judgment results of two adjacent monitoring terminal units both require cleaning operations. If so, the section between the two adjacent monitoring terminal units is presented as a colored highlight on the display screen based on the electronic map.

7. The distributed road dust monitoring system according to claim 2, It is characterized in that The power module includes a power generation unit and an energy storage unit; wherein, The power generation unit includes a friction power generation component and / or a solar power generation component; The energy storage unit includes an energy storage element and an AC / DC converter. The first end of the energy storage unit is connected to the power generation unit for storing the electric energy generated by the power generation unit. The second end of the energy storage unit is connected to the sensor, processor and wireless communication module for providing electric energy to the sensor, processor and wireless communication module.

8. The distributed road dust monitoring system according to claim 7, It is characterized in that The friction power generation component is a closed vibration generator based on a friction generator, which is used to collect vibration energy in the environment and convert it into electrical energy; or the friction power generation component is a closed wind generator based on a friction generator, which is used to collect wind energy in the environment and convert it into electrical energy.

9. The distributed road dust monitoring system according to claim 8, It is characterized in that The closed vibration generator based on the friction generator comprises: a protective cover having a chamber therein; a cantilever beam located in the chamber, wherein a first end of the cantilever beam is fixedly connected to an inner wall of the protective cover, and a second end of the cantilever beam is configured to be able to reciprocate under the action of an external force; A plurality of groups of friction power generation components, each group of friction power generation components includes a first friction power generation part and a second friction power generation part, wherein the first friction power generation part is fixedly connected to the second end of the cantilever beam, the second friction power generation part is insulated and arranged on the inner wall of the protective cover, and the surfaces of the first friction power generation part and the second friction power generation part correspond to each other; Under the action of external force, the second end of the cantilever beam drives the first friction power generation part to perform reciprocating motion, so that the surfaces corresponding to each other of the first friction power generation part and the second friction power generation part contact and separate, thereby generating electric charge.

10. The distributed road dust monitoring system according to claim 8, It is characterized in that The closed wind turbine based on the friction generator includes at least one friction power generation component, a housing for accommodating the at least one friction power generation component, a rotating shaft, at least one cam and a fan blade; wherein, The at least one friction power generation component is fixed on the inner wall of the housing; A portion of the rotating shaft is located outside the housing, and another portion of the rotating shaft extends into the housing; The at least one cam is fixed on the rotating shaft located inside the shell; the fan blade is fixed on the end of the rotating shaft located outside the shell.

11. The distributed road dust monitoring system according to claim 8, It is characterized in that The closed wind turbine based on the friction generator includes a diaphragm that forms a closed cavity and a fixed membrane inside the closed cavity; under the action of external force, the diaphragm and the fixed membrane contact and rub to form a friction interface; the outer surface of the diaphragm is formed with a first electrode layer and a second electrode layer, and the first electrode layer and the second electrode layer are not in contact with each other; the first electrode layer and / or the second electrode layer are electrical signal output terminals.

12. A distributed road dust monitoring system according to any one of claims 7 to 11, It is characterized in that The solar power generation component is a thin film solar cell, and the thin film solar cell is selected from any one of a GaAs thin film solar cell, a CIS thin film solar cell or a CdTe thin film solar cell.

13. A distributed road dust monitoring system according to any one of claims 7 to 11, It is characterized in that The energy storage unit also includes an external power supply port for receiving external power supply.

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