Intelligent traffic wireless interaction system based on friction nanometer generator

Abstract

The invention discloses an intelligent traffic wireless interaction system based on a friction nanometer generator, which is provided with an inter-vehicle communication terminal arranged at a traffic node and a plurality of friction nanometer power generation sensors respectively arranged on different vehicles, and the plurality of friction nanometer power generation sensors are all in signal connection with the inter-vehicle communication terminal. The friction nanometer power generation sensor comprises a friction nanometer power generator used for generating a road condition waveform signal according to the vibration condition of a vehicle, a sensing signal processing unit used for amplifying the road condition waveform signal, and a transmission unit used for sending the amplified road condition waveform signal to the inter-vehicle communication terminal. And the inter-vehicle communication terminal is used for processing and classifying the road condition waveform signals, outputting road condition types and sending the road condition types to surrounding vehicles in a broadcast form. The system has the advantages of being low in cost and not prone to being interfered by the environment, the data processing burden of the vehicle-mounted equipment is reduced, and the overall communication efficiency and the intelligent level of the intelligent traffic system are improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle networking technology, and in particular to an intelligent transportation wireless interaction system based on a triboelectric nanogenerator. Background Technology

[0002] With the increasing demand for intelligent transportation systems and sustainable energy in modern society, the research and development of road surface monitoring technology has become particularly important. By monitoring and sharing road conditions, dynamic data can be effectively provided for vehicle navigation, thereby improving the overall operational efficiency of intelligent transportation systems.

[0003] Traditional methods for collecting road condition data mainly rely on installing a large number of ultrasonic sensors or cameras on vehicles. Ultrasonic sensors emit high-frequency ultrasonic pulses and receive the echoes reflected back from the road surface. They use the transit time to calculate the distance between the sensor and the road surface to determine road information. Cameras capture visual information about the road surface through image sensors, and then use computer vision and deep learning algorithms to analyze the images to determine road information.

[0004] While both ultrasonic sensors and cameras can effectively determine road surface information, large-scale deployment of ultrasonic sensors and cameras requires high initial installation and subsequent maintenance costs, necessitates external power supply, and is susceptible to light interference. Ultrasonic sensors, on the other hand, suffer from limited detection range and susceptibility to electromagnetic interference, making it difficult to meet the comprehensive information collection needs in complex traffic scenarios. Furthermore, ultrasonic sensors and cameras require higher computing power to process information, increasing the data processing burden on onboard equipment and reducing the overall communication efficiency and intelligence level of the intelligent transportation system. Summary of the Invention

[0005] Therefore, it is necessary to address the aforementioned technical issues by providing an intelligent transportation wireless interaction system based on triboelectric nanogenerators. This system is characterized by low cost, resistance to environmental interference, reduced data processing burden on onboard equipment, and improved overall communication efficiency and intelligence level of the intelligent transportation system.

[0006] This invention provides an intelligent transportation wireless interaction system based on triboelectric nanogenerators, which includes a workshop communication terminal arranged at traffic nodes and multiple triboelectric nanogenerator sensors arranged in different vehicles. All the multiple triboelectric nanogenerator sensors are connected to the workshop communication terminal for signal transmission.

[0007] Triboelectric nanosensors include:

[0008] Triboelectric nanogenerators are used to generate road condition waveform signals based on vehicle vibration.

[0009] The sensing signal processing unit is electrically connected to the triboelectric nanogenerator and is used to amplify the road condition waveform signal generated by the triboelectric nanogenerator.

[0010] The transmission unit, electrically connected to the sensor signal processing unit, is used to send the amplified road condition waveform signal to the workshop communication terminal.

[0011] The workshop communication terminal is used to process and classify the received amplified road condition waveform signal, output the road condition type corresponding to the vehicle's location, and broadcast the road condition type to surrounding vehicles.

[0012] In one embodiment, the triboelectric nanogenerator includes a housing, and a slide rail, a sliding frame, a first elastic support, a second elastic support, and an interdigitated electrode plate disposed inside the housing.

[0013] The slide rail is vertically fixed to one side wall of the housing, the sliding frame is slidably assembled with the slide rail, the first elastic support is set above the sliding frame, and the second elastic support is set below the sliding frame;

[0014] The upper and lower ends of the first elastic support are fixedly connected to the housing and the sliding frame, respectively; the upper and lower ends of the second elastic support are fixedly connected to the housing and the sliding frame, respectively.

[0015] The interdigitated electrode plate is fixedly mounted on another side wall of the housing. The side wall on which the interdigitated electrode plate is mounted is perpendicular to the side wall on which the slide rail is mounted. The interdigitated electrode plate includes a base plate and interdigitated electrodes disposed on the side of the base plate facing the sliding frame. The base plate is fixedly connected to the housing.

[0016] An FEP film of the same shape and size as the substrate is pasted on the side of the interdigital electrode plate facing the sliding frame. A foam block is fixedly assembled on the side of the sliding frame facing the interdigital electrode plate. Copper foil is pasted on the side of the foam block facing the interdigital electrode, and the copper foil abuts against the FEP film.

[0017] Wiring holes are provided on the side wall of the housing that assembles the forked electrode plate.

[0018] In one embodiment, the sensing signal processing unit includes a voltage divider circuit, a boost circuit, and a filter circuit connected in series.

[0019] The voltage divider circuit is used to amplify the original road condition waveform signal. It includes resistors R2, R3, and Rin, and capacitors C2 and Cin. One end of resistor R2, one end of resistor R3, and one end of resistor Rin are all connected to one end of capacitor C2. The other end of capacitor C2 is grounded. The other end of resistor R2 is connected to VCC. The other end of resistor R3 is grounded. One end of capacitor Cin is connected to the interdigitated electrode. The other end of capacitor Cin is connected to the other end of resistor Rin.

[0020] The boost circuit is used to amplify the road condition waveform signal boosted by the voltage divider circuit. It includes resistor R1, LM358P amplifier, resistor Rf, and capacitor C1. One end of resistor R1 and one end of resistor Rf are both connected to pin 2 of LM358P amplifier. The other end of resistor R1 is connected to one end of capacitor C1, and the other end of capacitor C1 is grounded. The other end of resistor Rf is connected to pin 1 of LM358P amplifier. The other end of resistor Rin is also connected to pin 3 of LM358P amplifier. Pin 8 of LM358P amplifier is connected to VCC.

[0021] The filter circuit is used to filter out noise interference from the road condition waveform signal amplified by the boost circuit. It includes resistor R4 and capacitor Cout. One end of resistor R4 is connected to pin 1 of the LM358P amplifier, and the other end of resistor R4 is connected to one end of capacitor Cout and the transmission unit. The other end of capacitor Cout is grounded.

[0022] In one embodiment, the transmission unit is equipped with a microcontroller of model ESP32, which is connected to the other end of resistor R4.

[0023] In one embodiment, the workshop communication terminal uses a convolutional neural network model to process and classify the amplified road condition waveform signal.

[0024] In one embodiment, both the first elastic support and the second elastic support are composed of two stainless steel rings fixedly connected vertically.

[0025] The beneficial effects of this invention are:

[0026] (1) The present invention uses a triboelectric nano-powered sensor to collect different road conditions such as flat ground, speed bumps and bumpy road sections to generate distinct electrical signals, i.e. road condition waveform signals. The triboelectric nano-powered sensor has self-powered capability, low installation and maintenance costs, is not easily affected by external environmental interference, and collects accurate road condition information.

[0027] (2) The present invention uses workshop communication terminals deployed at traffic nodes to realize vehicle-to-vehicle communication, processes and classifies the road condition waveform signals sent by vehicles, and determines the road condition type; the workshop communication terminals are used to centrally complete the road condition analysis and information sharing among multiple vehicles, which only requires the traffic nodes to have high computing power, effectively reducing the data processing burden of on-board equipment and improving the overall communication efficiency and intelligence level of the intelligent transportation system. Attached Figure Description

[0028] Figure 1 This is a schematic diagram illustrating the spatial deployment relationship between different vehicle and workshop communication terminals provided in an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the modular structure of the triboelectric nanogenerator sensor provided in an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of the structure of a triboelectric nanogenerator provided in an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram illustrating the assembly relationship between the sliding frame and the interdigitated electrode plate provided in an embodiment of the present invention.

[0032] Figure 5 for Figure 4 A magnified structural diagram at point A;

[0033] Figure 6 This is a schematic diagram of the structure of the interdigitated electrode plate provided in an embodiment of the present invention;

[0034] Figure 7 The circuit diagram is provided for a sensing signal processing unit according to an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached drawings: 100, housing; 110, wiring hole; 200, slide rail; 300, sliding frame; 310, foam block; 320, copper foil; 400, first elastic support; 500, second elastic support; 600, interdigitated electrode plate; 700, base plate; 800, interdigitated electrode; 900, FEP film. Detailed Implementation

[0036] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] It should be noted that in the description of this invention, "upper," "lower," "top," "bottom," and orientation or positional relationship are based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0038] In one embodiment, an intelligent transportation wireless interaction system based on triboelectric nanogenerators includes a workshop communication terminal arranged at a traffic node and multiple triboelectric nanogenerator sensors arranged in different vehicles. The multiple triboelectric nanogenerator sensors are all connected to the workshop communication terminal via signal.

[0039] like Figure 1 As shown, different vehicles are positioned around the workshop communication terminal. Specifically, traffic nodes can be places with a high concentration of vehicles, such as the middle of an intersection.

[0040] like Figure 2 As shown, the triboelectric nanogenerator sensor of this embodiment includes:

[0041] Triboelectric nanogenerators (TENGs) are used to generate road condition waveform signals based on vehicle vibrations. As an emerging energy harvesting technology, TENGs can generate electrical charges through friction, thereby converting mechanical energy into electrical energy. In this embodiment, the mechanical energy generated by vehicle vibrations is specifically converted into electrical energy, i.e., a road condition waveform signal.

[0042] The sensor signal processing unit is electrically connected to the triboelectric nanogenerator and is used to amplify the road condition waveform signal generated by the triboelectric nanogenerator.

[0043] The transmission unit, electrically connected to the sensor signal processing unit, is used to send the amplified road condition waveform signal to the workshop communication terminal.

[0044] The workshop communication terminal is used to process and classify the received amplified road condition waveform signal, output the road condition type corresponding to the vehicle's location, and broadcast the road condition type to surrounding vehicles.

[0045] In this embodiment, a triboelectric nanogenerator sensor is used to collect road condition waveform signals that are clearly distinguishable between different road conditions such as flat ground, speed bumps, and bumpy road sections. This triboelectric nanogenerator sensor has self-powered capability, low installation and maintenance costs, is not easily affected by external environmental interference, and collects accurate road condition information.

[0046] It should be noted that the workshop communication terminal sends broadcast signals to a certain range around it, such as within 20 meters. Surrounding vehicles receive the road condition signal through the transmission unit and send it to the vehicle display for local reminders or to assist in adjusting driving behavior.

[0047] This embodiment uses a workshop communication terminal to centrally complete road condition analysis and information sharing among multiple vehicles, eliminating the need for individual analysis and processing by each vehicle. It only requires traffic nodes to have high computing power, effectively reducing the data processing burden of on-board equipment and improving the overall communication efficiency and intelligence level of the intelligent transportation system.

[0048] In one embodiment, such as Figure 3 As shown, the triboelectric nanogenerator includes a housing 100, and a slide rail 200, a sliding frame 300, a first elastic support 400, a second elastic support 500, and an interdigitated electrode plate 600 disposed inside the housing 100.

[0049] Specifically, in this embodiment, the housing 100 is cubic in shape, and both the housing 100 and the sliding frame 300 are made of PLA.

[0050] The slide rail 200 is vertically fixedly mounted to one side wall of the housing 100. The sliding frame 300 is slidably mounted to the slide rail 200. The first elastic support 400 is disposed above the sliding frame 300, and the second elastic support 500 is disposed below the sliding frame 300. The upper and lower ends of the first elastic support 400 are fixedly connected to the housing 100 and the sliding frame 300, respectively. The upper and lower ends of the second elastic support 500 are fixedly connected to the housing 100 and the sliding frame 300, respectively.

[0051] The sliding frame 300 can slide stably up and down along the slide rail 200. The function of the first elastic support 400 and the second elastic support 500 is to provide elasticity and cushioning for the sliding frame 300. In this embodiment, both the first elastic support 400 and the second elastic support 500 are composed of two stainless steel rings fixedly connected vertically.

[0052] The interdigitated electrode plate 600 is fixedly mounted to another side wall of the housing 100, and the side wall on which the interdigitated electrode plate 600 is mounted is perpendicular to the side wall of the mounting slide rail 200. For example... Figure 4 As shown, the interdigitated electrode plate 600 includes a base plate 700 and interdigitated electrodes 800 disposed on the side of the base plate 700 facing the sliding frame 300. The base plate 700 is fixedly connected to the housing 100.

[0053] In this embodiment, the width of the interdigital electrode plate 600 is greater than the width of the sliding frame 300 in the vertical direction. The base plate 700 is made of FR4 material, and the interdigital electrodes 800 are printed on the base plate using PCB technology.

[0054] An FEP film 900 with the same shape and size as the base plate 700 is pasted on the side of the interdigital electrode plate 600 facing the sliding frame 300. A foam block 310 is fixedly mounted on the side of the sliding frame 300 facing the interdigital electrode plate 600. A copper foil 320 is covered and pasted on the side of the foam block 310 facing the interdigital electrode 800, and the copper foil 320 abuts against the FEP film 900. A wiring hole 110 is provided on the side wall of the housing 100 where the interdigital electrode plate 600 is mounted.

[0055] In this embodiment, the foam block 310 is black foam. The elasticity of the foam block 310 allows the copper foil 320 to make close contact with the FEP film 900 without generating too much resistance. The process of the triboelectric nanogenerator generating the road condition waveform signal is as follows: When the copper foil 320 is directly above the first electrode, a positive charge is induced on the copper foil 320, and an equal number of negative charges are induced on the FEP film 900. At this time, since the copper foil 320 and the first electrode are completely overlapped, no current is generated in the external circuit. Then, with vibration excitation, the copper foil 320 begins to move downwards and gradually moves above the second electrode. At this time, there are moving free electrons between the electrodes, and the external circuit generates current. When the copper foil 320 and the second electrode are completely overlapped, charge balance is reached again, and no current is generated in the external circuit. When the copper foil 320 moves further downwards, this balance is broken, and the external circuit generates current in the opposite direction. When vibration occurs, the sliding frame 300 begins to move under the action of inertia. During this process, a waveform related to the vibration frequency and amplitude is generated, i.e., the road condition waveform signal. The waveform signal generated varies depending on the road conditions.

[0056] In one embodiment, such as Figure 5 As shown, the sensor signal processing unit includes a voltage divider circuit, a boost circuit, and a filter circuit connected in series.

[0057] The transmission unit is equipped with a microcontroller of model ESP32. The Bluetooth module of ESP32 has the characteristics of wide range, low power consumption, high performance and stable transmission. It can transmit the road condition waveform signal generated by the interdigitated electrode 800 completely. Its input voltage requirement is greater than 0, that is, VOUT is greater than 0. Therefore, the original road condition waveform signal needs to be boosted by a voltage divider circuit.

[0058] The voltage divider circuit is used to amplify the original road condition waveform signal. It includes resistors R2, R3, and Rin, and capacitors C2 and Cin. One end of resistor R2, one end of resistor R3, and one end of resistor Rin are all connected to one end of capacitor C2. The other end of capacitor C2 is grounded. The other end of resistor R2 is connected to VCC. The other end of resistor R3 is grounded. One end of capacitor Cin is connected to the interdigitated electrode 800, and the other end of capacitor Cin is connected to the other end of resistor Rin.

[0059] Specifically, one output terminal of the interdigital electrode 800 is connected to the capacitor Cin via a wire passing through the wiring hole 110, and the other output terminal is grounded.

[0060] The boost circuit is used to amplify the road condition waveform signal boosted by the voltage divider circuit. It includes resistor R1, LM358P amplifier, resistor Rf, and capacitor C1. One end of resistor R1 and one end of resistor Rf are both connected to pin 2 of LM358P amplifier. The other end of resistor R1 is connected to one end of capacitor C1, and the other end of capacitor C1 is grounded. The other end of resistor Rf is connected to pin 1 of LM358P amplifier. The other end of resistor Rin is also connected to pin 3 of LM358P amplifier. Pin 8 of LM358P amplifier is connected to VCC.

[0061] In this embodiment, resistor Rf = 100kΩ, resistor R1 = 10kΩ, and capacitor C1 = 10pF. The boost circuit is an inverting amplifier, and its voltage gain is calculated using the following formula:

[0062]

[0063] Therefore, the gain of this boost circuit is ten times, i.e., VOUT = 10VIN.

[0064] The filter circuit is used to filter out noise interference from the road condition waveform signal amplified by the boost circuit. In this embodiment, the filter circuit is an RC first-order low-pass filter circuit, including resistor R4 and capacitor Cout. One end of resistor R4 is connected to pin 1 of the LM358P amplifier, and the other end of resistor R4 is connected to one end of capacitor Cout and the transmission unit. The other end of capacitor Cout is grounded.

[0065] The ADC interface of the ESP32 microcontroller in the transmission unit is connected to the other end of resistor R4.

[0066] In one embodiment, the workshop communication terminal uses a convolutional neural network model to process and classify the amplified road condition waveform signal. This convolutional neural network is trained using corresponding road condition waveform information data, such as flat ground, speed bumps, gravel, and dilapidated roads. By centrally processing the road condition waveform information, the computational burden on each vehicle is effectively reduced.

[0067] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A friction nanogenerator-based intelligent transportation wireless interaction system, characterized in that, The application discloses a traffic node communication terminal and a plurality of friction nanometer power generation sensors arranged in different vehicles. The friction nanometer power generation sensor comprises: a friction nanometer power generator for generating a road condition waveform signal according to a vehicle vibration condition; a sensing signal processing unit electrically connected with the friction nanometer power generator for amplifying the road condition waveform signal generated by the friction nanometer power generator; a transmission unit electrically connected with the sensing signal processing unit for sending the amplified road condition waveform signal to the traffic node communication terminal; the traffic node communication terminal for processing and classifying the received amplified road condition waveform signal, outputting a road condition type of a vehicle corresponding to the amplified road condition waveform signal, and sending the road condition type to surrounding vehicles in a broadcast form. 2.The smart traffic wireless interaction system based on the friction nanogenerator of claim 1, wherein, The friction nanometer power generator comprises a shell (100), a sliding rail (200), a sliding frame (300), a first elastic support (400), a second elastic support (500) and an interdigital electrode plate (600) arranged in the shell (100). The sliding rail (200) is vertically fixedly arranged on one side wall of the shell (100), the sliding frame (300) is slidably arranged on the sliding rail (200), the first elastic support (400) is arranged above the sliding frame (300), and the second elastic support (500) is arranged below the sliding frame (300). The upper and lower ends of the first elastic support (400) are fixedly connected with the shell (100) and the sliding frame (300) respectively, and the upper and lower ends of the second elastic support (500) are fixedly connected with the shell (100) and the sliding frame (300) respectively. The interdigital electrode plate (600) is fixedly arranged on another side wall of the shell (100), the side wall on which the interdigital electrode plate (600) is arranged is perpendicular to the side wall on which the sliding rail (200) is arranged, the interdigital electrode plate (600) comprises a base plate (700) and an interdigital electrode (800) arranged on one side of the base plate (700) facing the sliding frame (300), and the base plate (700) is fixedly connected with the shell (100). An FEP film (900) with the same shape and size as the base plate (700) is pasted on one side of the interdigital electrode plate (600) facing the sliding frame (300), a foam block (310) is fixedly arranged on one side of the sliding frame (300) facing the interdigital electrode plate (600), a copper foil (320) is pasted on one side of the foam block (310) facing the interdigital electrode (800), and the copper foil (320) abuts against the FEP film (900). The side wall of the shell (100) on which the interdigital electrode plate (600) is arranged is provided with a wiring hole (110). 3.The smart traffic wireless interaction system based on the friction nanogenerator of claim 2, wherein, The sensing signal processing unit comprises a voltage dividing circuit, a voltage boosting circuit and a filter circuit connected in sequence. The voltage dividing circuit is used for lifting the original road condition waveform signal, comprising a resistor R2, a resistor R3, a resistor Rin, a capacitor C2 and a capacitor Cin, one end of the resistor R2, one end of the resistor R3 and one end of the resistor Rin are all connected with one end of the capacitor C2, the other end of the capacitor C2 is grounded, the other end of the resistor R2 is connected with VCC, the other end of the resistor R3 is grounded, one end of the capacitor Cin is connected with the interdigital electrode (800), and the other end of the capacitor Cin is connected with the other end of the resistor Rin; The voltage boosting circuit is used for amplifying the road condition waveform signal lifted by the voltage dividing circuit, comprising a resistor R1, an LM358P amplifier, a resistor Rf and a capacitor C1, one end of the resistor R1 and one end of the resistor Rf are both connected with the 2 pin of the LM358P amplifier, the other end of the resistor R1 is connected with one end of the capacitor C1, the other end of the capacitor C1 is grounded, the other end of the resistor Rf is connected with the 1 pin of the LM358P amplifier, the other end of the resistor Rin is also connected with the 3 pin of the LM358P amplifier, and the 8 pin of the LM358P amplifier is connected with VCC. The filtering circuit is used for filtering the noise interference of the road condition waveform signal amplified by the voltage boosting circuit, comprising a resistor R4 and a capacitor Cout, one end of the resistor R4 is connected with the 1 pin of the LM358P amplifier, the other end of the resistor R4 is connected with one end of the capacitor Cout and a transmission unit, and the other end of the capacitor Cout is grounded. 4.The smart traffic wireless interaction system based on the friction nanogenerator of claim 3, wherein, The transmission unit is provided with a microcontroller with the model of ESP32, and the microcontroller is connected with the other end of the resistor R4. 5.The smart traffic wireless interaction system based on the friction nanogenerator of claim 4, wherein, The vehicle-to-everything communication terminal adopts a convolutional neural network model to process and classify the amplified road condition waveform signal. 6.The smart traffic wireless interaction system based on the friction nanogenerator of claim 5, wherein, The first elastic support (400) and the second elastic support (500) are both composed of two stainless steel rings fixedly connected in an up-down mode.

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