A smart road surface that generates electricity and monitors itself

Abstract

This invention provides a smart road surface with power generation and self-monitoring capabilities, belonging to the field of intelligent transportation road technology. The smart road surface of this invention comprises a road surface layer made of a porous material with a giant flexural electrical effect, a first conductive layer disposed above the road surface layer, a second conductive layer disposed below the road surface layer, and a wear layer disposed above the first conductive layer; both the first and second conductive layers are connected to a circuit module and a sensing module via wires. The smart road surface of this invention, composed of a porous material with a giant flexural electrical effect and a conductive layer, possesses self-generating and sensing functions, and can utilize the external forces borne by the road to generate electrical energy and data, thereby saving energy and improving efficiency.

Description

Technical Field

[0001] This invention relates to the field of intelligent transportation road technology, and in particular to an intelligent road surface that generates electricity and performs self-monitoring. Background Technology

[0002] With the acceleration of urbanization, road traffic problems are becoming increasingly prominent. Traditional road construction methods cannot meet the growing demands for transportation energy, safety, and environmental protection. Therefore, developing intelligent roads is a current research hotspot and an important engineering requirement. Traditional pavement materials cannot effectively utilize the deformation energy generated by loads, limiting energy recovery and the development of intelligent transportation systems. Utilizing the mechanical energy generated by pedestrians or vehicles passing over the road and converting it into electrical energy for applications such as powering road facilities, intelligent sensing, and health monitoring is an effective way to save energy and improve road safety and utilization. Therefore, how to utilize the load energy on the road surface for power generation and sensing is a valuable technological innovation. Summary of the Invention

[0003] The purpose of this invention is to provide a smart road surface that generates electricity and monitors itself, in order to solve the above-mentioned technical problems.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solution: This invention provides a smart road surface that generates electricity and monitors itself, comprising: A pavement layer 1 made of a porous material with giant flexural electrical effect, a first conductive layer 2 disposed above the pavement layer 1, a second conductive layer 11 disposed below the pavement layer 1, and a wear layer 3 disposed above the first conductive layer 2. Both the first conductive layer 2 and the second conductive layer 11 are connected to the circuit module 4 and the sensing module 5 via wires. The porous material with giant flexural electrical effect is a porous composite material composed of porous polymers and high dielectric material additives.

[0005] Furthermore, the porous material with giant flexural electrical effect can generate flexural electrical signals when subjected to external forces and has good elastic recovery properties. The first conductive layer 2 and the second conductive layer 11 can sense and conduct electrical signals generated by the porous material; The wear layer 3 can protect the conductive layer and porous material from damage caused by friction and wear or other external factors. The circuit module 4 can process and store the electrical signals output from the conductive layer, and can be used as a power source to power the device. The sensing module 5 can provide information on vehicles and pedestrians on the intelligent road surface.

[0006] Furthermore, the porous polymer includes one or more of polyvinylidene fluoride, polyurethane, polypropylene, polyethylene, and polystyrene, and the high dielectric material additive phase includes one or more of barium titanate, calcium copper titanate, and barium strontium titanate.

[0007] Furthermore, the mass fraction of the high dielectric material additive phase in the porous material with giant flexural effect is 10-50%, and the porosity of the porous polymer is 30-70%.

[0008] Furthermore, the first conductive layer 2 and the second conductive layer 11 are made of materials with conductive properties.

[0009] Furthermore, the circuit module 4 includes a rectifier 6 and an energy storage device 7; The rectifier 6 is used to rectify the flexural electrical output signal into an electrical signal in the same direction, and the energy storage device 7 is used to store the output electrical signal and then use it as a power source.

[0010] Furthermore, the sensing module 5 includes a filter 8, an amplifier 9, and a signal processor 10.

[0011] Furthermore, the filter 8 is used to remove noise interference in the flexural electrical signal, the amplifier 9 is used to enhance the amplitude of the flexural electrical signal, and the signal processor 10 is used to analyze and identify the flexural electrical signal and output corresponding information and data.

[0012] The beneficial effects of this invention are: The intelligent road surface of the present invention is composed of a porous material with a giant flexural electrical effect and a conductive layer. It has the functions of self-generating power and sensing, and can generate electrical energy and data by utilizing the external forces borne by the road, thereby saving energy and improving efficiency.

[0013] The intelligent road surface of the present invention uses a porous material with a giant flexural effect, which is composed of a porous polymer and a high dielectric material additive phase. It has good elastic recovery performance and can restore its original shape after being subjected to external force. It is not easy to crack, age or break, thereby improving the service life and safety of the road.

[0014] The intelligent road surface of the present invention also includes a circuit module and a sensing module, which can collect and utilize flexural electrical signals as a power source to provide power to facilities such as traffic lights, street lights, and intelligent lanes. At the same time, they can also measure and sense information such as the weight and speed of pedestrians or vehicles, and provide data such as traffic flow and road surface health status, providing a basis for traffic management and maintenance.

[0015] The intelligent road surface of this invention has the functions of power generation and self-powered sensing. It has the advantages of simple preparation, low cost, stable performance and wide application, providing a new idea for the development of intelligent roads. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the intelligent road surface of the present invention.

[0017] Figure 2 This is a circuit connection diagram of the circuit module of the present invention.

[0018] Figure 3 This is a circuit connection diagram of the sensing module of the present invention.

[0019] Among them, 1 is the road surface layer, 2 is the first conductive layer, 3 is the wear layer, 4 is the circuit module, 5 is the sensing module, 6 is the rectifier, 7 is the energy storage device, 8 is the filter, 9 is the amplifier, 10 is the signal processor, and 11 is the second conductive layer. Detailed Implementation

[0020] This invention provides a smart road surface that generates electricity and monitors itself, comprising: A pavement layer 1 made of a porous material with giant flexural electrical effect, a first conductive layer 2 disposed above the pavement layer 1, a second conductive layer 11 disposed below the pavement layer, and a wear layer 3 disposed above the first conductive layer 2. Both the first conductive layer 2 and the second conductive layer 11 are connected to the circuit module 4 and the sensing module 5 via wires. The porous material with giant flexural electrical effect is a porous composite material composed of porous polymers and high dielectric material additives.

[0021] In this invention, the porous material with giant flexural electrical effect can generate flexural electrical signals when subjected to external force and has good elastic recovery performance. The first conductive layer 2 and the second conductive layer 11 can sense and conduct electrical signals generated by the porous material; The wear layer 3 can protect the conductive layer and porous material from damage caused by friction and wear or other external factors. The circuit module 4 can process and store the electrical signals output from the conductive layer, and can be used as a power source to power the device. The sensing module 5 can provide information on vehicles and pedestrians on the intelligent road surface.

[0022] In this invention, the porous polymer includes one or more of polyvinylidene fluoride, polyurethane, polypropylene, polyethylene and polystyrene, preferably one or more of polyvinylidene fluoride, polyurethane and polypropylene; the high dielectric material additive phase includes one or more of barium titanate, calcium copper titanate and barium strontium titanate, preferably calcium copper titanate.

[0023] In this invention, the mass fraction of the high dielectric material additive phase in the porous material with giant flexural effect is 10-50%, preferably 20-40%, and more preferably 25-35%; the porosity of the porous polymer is 30-70%, preferably 40-60%, and more preferably 45-55%.

[0024] In this invention, the first conductive layer 2 and the second conductive layer 11 are made of materials with conductive properties.

[0025] In this invention, the circuit module 4 includes a rectifier 6 and an energy storage device 7; The rectifier 6 is used to rectify the flexural electrical output signal into an electrical signal in the same direction, and the energy storage device 7 is used to store the output electrical signal, which is then used as a power source to provide power to facilities such as traffic lights, street lights, and intelligent lanes.

[0026] In this invention, the sensing module 5 includes a filter 8, an amplifier 9, and a signal processor 10.

[0027] In this invention, the filter 8 is used to remove noise interference in the flexural electrical signal, the amplifier 9 is used to enhance the amplitude of the flexural electrical signal, and the signal processor 10 is used to analyze and identify the flexural electrical signal and output corresponding information and data.

[0028] The technical solutions provided by the present invention will be described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0029] like Figure 1 As shown, the intelligent road surface of the present invention includes a road surface layer 1 made of a porous material with a giant flexural electrical effect, a first conductive layer 2 disposed above the road surface layer 1, a second conductive layer 11 disposed below the road surface layer 1, and a wear layer 3 disposed above the top electrode. The porous material with a giant flexural electrical effect can generate flexural electrical signals when subjected to external forces and has good elastic recovery performance. The conductive layer 2 can be any material with good conductivity, such as metal mesh, metal foil, or conductive adhesive. The wear layer 3 is a traditional wear layer that can protect the porous material and the conductive layer from damage caused by friction, wear, or other factors. The intelligent road surface also includes a circuit module 4 and a sensing module 5 connected to the first conductive layer 2 and the second conductive layer 11. The circuit module 4 is used to collect and utilize the flexural electrical signals, and the sensing module 5 is used to measure and sense information such as the weight and speed of pedestrians or vehicles based on the intensity and frequency characteristics of the flexural electrical signals output by the material, and to provide data such as traffic flow and road surface health status.

[0030] like Figure 2As shown, preferably, the circuit module 4 includes a rectifier 6 and an energy storage unit 7. The rectifier 6 is used to rectify the flexural electrical signal into a unidirectional electrical signal. The energy storage unit 7 is used to store the output electrical signal, which is then used as a power source to provide power to facilities such as traffic lights, streetlights, and intelligent lanes. The specific models and parameters of the rectifier 6 and the energy storage unit 7 can be selected according to actual needs, and this invention does not impose any limitations.

[0031] like Figure 3 As shown, preferably, the sensing module 5 includes a filter 8, an amplifier 9, and a signal processor 10. The filter 8 is used to remove noise interference in the flexural electrical signal, the amplifier 9 is used to enhance the amplitude of the flexural electrical signal, and the signal processor 10 is used to analyze and identify the flexural electrical signal and output corresponding information and data. The specific models and parameters of the filter 8, amplifier 9, and signal processor 10 can be selected according to actual needs, and the present invention does not impose any limitations.

[0032] Example 1

[0033] A smart road surface for power generation and self-monitoring: Polyvinylidene fluoride (PVDF) (as a porous polymer matrix) and calcium copper titanate (as a high-dielectric additive phase) are mixed uniformly at a specific mass fraction. This mixture is then mixed uniformly again with sodium chloride particles at a specific mass ratio, with the sodium chloride particles serving as a sacrificial template to generate the porous structure. The pore size of the porous material is related to the morphology and mass ratio of the sacrificial template. Heating to 180 °C under vacuum induces a cross-linking reaction, thereby solidifying the material. After 30 minutes, the material is placed in ultrapure water to remove the sacrificial template salt particles, forming a porous composite material with a giant flexural electrical effect.

[0034] The porous composite material with giant flexural electrical effect was cut into rectangular sheets with a macroscopic thickness of 5 mm, a width of 1 m, and a length of 10 m, and used as a road surface layer.

[0035] Metal mesh is used as a conductive layer, covering the top and bottom of the pavement layer and adhering tightly to it.

[0036] The first and second conductive layers are connected to the circuit module and the sensing module. The circuit module includes a rectifier and an energy storage device, and the sensing module includes a filter, an amplifier, and a signal processor.

[0037] The above structure is laid on the road and connected to facilities such as traffic lights, street lights, and intelligent lanes to complete the preparation of intelligent road surfaces.

[0038] Using a smart road surface, the method is as follows: When pedestrians or vehicles walk or drive on the smart pavement, the smart pavement is subjected to external forces, generating flexural electrical signals.

[0039] The flexural electrical signal is transmitted to the circuit module and the sensing module through the conductive layer.

[0040] The circuit module rectifies the flexural electrical signal into a signal in the same direction and stores it in the energy storage device, which then provides power to facilities such as traffic lights, street lights, and smart lanes.

[0041] The sensing module filters, amplifies, and processes the flexural electrical signal. Based on the intensity and frequency characteristics of the flexural electrical signal output by the porous composite material, it measures information such as the weight and speed of pedestrians or vehicles and provides data such as traffic flow and road surface health.

[0042] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A smart road surface that generates electricity and performs self-monitoring, characterized in that, include: A pavement layer made of a porous material with giant flexural electrical effect, a first conductive layer disposed above the pavement layer, a second conductive layer disposed below the pavement layer, and a wear layer disposed above the first conductive layer; Both the first conductive layer and the second conductive layer are connected to the circuit module and the sensing module via wires. The porous material with giant flexural electrical effect is a porous composite material composed of porous polymers and high dielectric material additives.

2. The intelligent road surface with power generation and self-monitoring according to claim 1, characterized in that, The porous material with giant flexural electrical effect can generate flexural electrical signals when subjected to external forces and has good elastic recovery performance. The conductive layer can sense and conduct electrical signals generated by the porous material; The wear layer can protect the conductive layer and porous materials from damage caused by friction, wear or other external factors. The circuit module can process and store the electrical signals output from the conductive layer, and can be used as a power source to power the device. The sensing module can provide information on vehicles and pedestrians on the smart road.

3. The intelligent road surface with power generation and self-monitoring according to claim 1, characterized in that, The porous polymer includes one or more of polyvinylidene fluoride, polyurethane, polypropylene, polyethylene, and polystyrene, and the high dielectric material additive phase includes one or more of barium titanate, calcium copper titanate, and barium strontium titanate.

4. The intelligent road surface with power generation and self-monitoring according to claim 3, characterized in that, The high dielectric material additive phase has a mass fraction of 10-50% in the porous material with giant flexural effect, and the porous polymer has a porosity of 30-70%.

5. The intelligent road surface with power generation and self-monitoring according to claim 1, characterized in that, The first conductive layer and the second conductive layer are made of materials with conductive properties.

6. The intelligent road surface with power generation and self-monitoring according to claim 1, characterized in that, The circuit module includes a rectifier and an energy storage device; The rectifier is used to rectify the flexural electrical output signal into an electrical signal in the same direction, and the energy storage device is used to store the output electrical signal and then use it as a power source.

7. The intelligent road surface with power generation and self-monitoring according to claim 1, characterized in that, The sensing module includes a filter, an amplifier, and a signal processor.

8. The intelligent road surface with power generation and self-monitoring according to claim 7, characterized in that, The filter is used to remove noise interference from the flexural electrical signal, the amplifier is used to enhance the amplitude of the flexural electrical signal, and the signal processor is used to analyze and identify the flexural electrical signal and output corresponding information and data.

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