An intelligent management system for electric bicycles and a special electronic license plate

Abstract

The invention discloses a special license plate for electric bicycles, which includes a license plate housing, a circuit board is arranged inside the license plate housing, an external interface is arranged on the license plate housing, the external interface is connected to the central control system of the electric bicycle through a wiring harness, an active RFID module, a Lora module, a three-axis acceleration module, and a power module are arranged on the circuit board, and the active RFID module is connected to the Lora module and the three-axis acceleration module through an SPI interface respectively; the power module provides direct current for the active RFID module, the Lora module and the three-axis acceleration module; the invention also discloses an electric bicycle intelligent management system, which, in addition to the electric license plate, also includes an active RFID signal receiving base station, a Lora gateway, a background server that forms data transmission with the active RFID signal receiving base station and the Lora gateway respectively, and a mobile inspection device equipped with a contactless card reader. The invention can effectively and intelligently manage electric bicycles.

Description

Technical Field

[0001] The present invention relates to the technical field of short-distance wireless communication and close-range identity recognition, and in particular to an intelligent management system for electric bicycles and a special electronic license plate. Background Art

[0002] An electric bicycle is a mechatronic personal transportation tool that uses batteries as auxiliary energy and is based on an ordinary bicycle and is equipped with a motor, controller, battery, throttle, brake handle and other operating components and a display instrument system. Electric bicycles are environmentally friendly and low in energy consumption. They are the best transportation product for green environmental protection and air pollution purification. At present, my country has become a major producer and seller of electric bicycles, accounting for 90% of the world's production and sales. As of 2015, China's electric bicycle ownership exceeded 200 million.

[0003] While electric bicycles bring convenience to people, they also bring many problems to urban traffic and the safety of citizens. Since electric bicycles do not have a national license plate and insurance like motor vehicles, once a traffic accident occurs, it is difficult to conduct investigation and compensation in the first place; at the same time, theft cases of electric bicycles and batteries continue to occur; speeding, driving in the wrong direction and running red lights are common. There is currently no effective intelligent management solution for electric vehicles. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a special license plate for electric bicycles, including a license plate shell, a group of visible numbers are provided on the outer surface of the license plate shell, a circuit board is provided inside the license plate shell, an external interface electrically connected to the circuit board is provided on the license plate shell, the external interface is connected to the electric bicycle central control system through a wiring harness, an active RFID module, a Lora module, a three-axis acceleration module, and a power supply module are provided on the circuit board, the active RFID module is connected to the Lora module and the three-axis acceleration module through an SPI interface respectively; the power supply module provides the required direct current for the normal operation of the active RFID module, the Lora module and the three-axis acceleration module.

[0005] As an improvement of the present invention, the RFID module includes a radio frequency circuit, an MCU and an NFC module; one interface of the radio frequency circuit is connected to an ANT antenna for transmitting a radio frequency signal with location information, and another interface of the radio frequency circuit is connected to the MCU; one port of the NFC module is connected to an ANT antenna for transmitting a radio frequency signal with NFC ID information, and another port of the NFC module is connected to the MCU; the Lora module includes a Lora radio frequency circuit, and the Lora radio frequency circuit is connected to an ANT antenna for transmitting a radio frequency signal with the running status of the electric bicycle; the three-axis acceleration module is connected to the MCU and transmits the detected acceleration change information perpendicular to the direction of the electric bicycle body to the MCU.

[0006] As an improvement of the present invention, the external interface includes positive and negative electrodes of a power supply and a serial port UART; the positive and negative electrodes of the power supply are internally connected to a power module, and the positive and negative electrodes of the power supply are externally connected to a central control system of an electric bicycle through a wiring harness, the serial port UART is internally connected to an MCU, and the serial port UART is externally connected to the central control system of an electric bicycle through a wiring harness.

[0007] Another invention purpose: The present invention provides an intelligent management system for electric bicycles, which can collect the speed, battery temperature, running trajectory, and whether the electric bicycle has fallen in real time, so as to truly achieve effective and intelligent management of electric bicycles.

[0008] In order to solve the above problems, the present invention adopts the following technical solutions: an electric bicycle intelligent management system, including an electronic license plate installed on the electric bicycle, an active RFID signal receiving base station installed at the intersection, a Lora gateway installed on the road, a background server for data transmission with the active RFID signal receiving base station and the Lora gateway, and a mobile inspection device equipped with a contactless card reader.

[0009] The electronic license plate includes an active RFID module, a Lora module, a power module, a three-axis acceleration module and an external interface. The active RFID module is connected to the Lora module and the three-axis acceleration module through an SPI interface respectively; the power module provides the required direct current for the normal operation of the active RFID module, the Lora module and the three-axis acceleration module.

[0010] The RFID module includes a radio frequency circuit, an MCU and an NFC module; one interface of the radio frequency circuit is connected to an ANT antenna for transmitting a radio frequency signal with location information, and another interface of the radio frequency circuit is connected to the MCU; one port of the NFC module is connected to an ANT antenna for transmitting a radio frequency signal with NFC ID information, and another port of the NFC module is connected to the MCU.

[0011] The Lora module includes a Lora radio frequency circuit, and the Lora radio frequency circuit is connected to an ANT antenna for transmitting a radio frequency signal with the running status of the electric bicycle;

[0012] The three-axis acceleration module is connected to the MCU and transmits the detected acceleration change information perpendicular to the direction of the electric bicycle body to the MCU.

[0013] The external interface includes positive and negative electrodes of the power supply and a serial UART; the positive and negative electrodes of the power supply are connected to the power module internally, and the positive and negative electrodes of the power supply are connected to the central control system of the electric bicycle through a wiring harness externally, the serial UART is connected to the MCU internally, and the serial UART is connected to the central control system of the electric bicycle externally through a wiring harness;

[0014] The backend server is connected to an active RFID signal receiving base station and a Lora gateway through a network respectively; the active RFID signal receiving base station is connected to an active RFID radio frequency signal receiving ANT antenna, and the active RFID signal receiving base station uploads the received radio frequency signal with location information from the electronic license plate to the backend server; the Lora gateway is connected to a Lora radio frequency signal receiving ANT antenna, and the Lora gateway uploads the received radio frequency signal with the running status of the electric bicycle to the backend server; the backend server receives and processes the active RFID signal from the active RFID signal receiving base station and the Lora signal from the Lora gateway respectively, and sends the processed signals to the transportation department, the public security department and the owner of the electric bicycle;

[0015] The mobile inspection device obtains the vehicle owner's identity information stored in the electronic license plate by means of a contactless card reading method.

[0016] By adopting the above scheme, when the electric bicycle equipped with an electronic license plate in the present invention is traveling in the city and surrounding roads, the active RFID module in the electronic license plate continuously emits active RFID signals, and reports its own active RFID signals to the active RFID signal receiving base station. Different active RFID signal receiving base stations record the entry and exit time of the electric bicycle according to the received active RFID signals, and report the data to the background server. The background server calculates the running track of the electric bicycle according to the relevant data. At the same time, the Lora module in the electronic license plate continuously emits Lora signals, and reports the speed, battery temperature and whether the electric bicycle falls to the Lora gateway. The Lora gateway reports the relevant data to the background server. The background server displays the running status of the electric bicycle in real time, and sends the running status information of the electric bicycle to the transportation department, the public security department and the electric bicycle user. The active RFID handheld device and the mobile phone with NFC function scan the electronic license plate installed on the electric bicycle to check whether the vehicle is legal and whether the working status is normal.

[0017] As an improvement of the present invention, the mobile inspection device is an RFID handheld device or a mobile phone with NFC function.

[0018] As an improvement of the present invention, the active RFID module adopts a highly integrated SOC chip NRF52832, and the SOC chip NRF52832 is integrated with an NFC module.

[0019] As an improvement of the present invention, the three-axis acceleration module adopts KX023, and the three-axis accelerations are ±2g, ±4g, and ±8g respectively.

[0020] As an improvement of the present invention, the Lora module adopts the SX1278 chip.

[0021] As an improvement of the present invention, the electronic license plate corresponds to the electric bicycle one by one, and the electric license plate has a unique ID number, which includes an active RFID ID, a Lora ID and an NFC ID; the active RFID ID, Lora ID and NFC ID numbers are consistent, and the active RFID ID, Lora ID and NFC ID are respectively stored in the active RFID module, the Lora module and the NFC module. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the appearance of an electronic license plate of an electric bicycle in a specific embodiment of the present invention;

[0023] Figure 2 is a circuit diagram of an electronic license plate of an electric bicycle in a specific embodiment of the present invention;

[0024] Figure 3 It is an application scenario diagram of an electric bicycle intelligent management system in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0025] The specific implementation example of the present invention is Figure 1 The electronic license plate of an electric bicycle is shown, including an externally visible digital code, a plastic shell and an external interface. The externally visible digital code is D123456, and the code starts with D, which is the abbreviation of electric bicycle and electricity. The digital part can also be English letters; the electronic license plate corresponds to the electric bicycle one by one, and the electric license plate has a unique ID number, which includes an active RFID ID, a Lora ID and an NFC ID; the active RFID ID, the Lora ID and the NFC ID numbers are consistent, and the active RFID ID, the Lora ID and the NFC ID are stored in the active RFID module, the Lora module and the NFC module respectively.

[0026] There are circuit boards and batteries inside the plastic shell; the external interface of the electronic license plate is connected to the external electric bicycle central control system through a wiring harness to realize functions such as drawing power from the electric bicycle battery and obtaining the speed and battery temperature parameters of the electric bicycle. Specifically, the external interface includes the positive and negative poles of the power supply and the serial port UART. The positive and negative poles of the power supply are connected to the power module to provide DC power. The serial port UART is connected to the MCU to facilitate providing the speed and battery temperature parameters of the electric bicycle directly obtained by the electric bicycle central control system to the MCU. The MUC organizes the acquired parameters and transmits them to the Lora module through the SPI line, and transmits them to the Lora gateway via the Lora antenna.

[0027] like Figure 2 As shown, the circuit of the electronic license plate includes an active RFID module, a Lora module, a power module, a three-axis acceleration module and an external interface, wherein the active RFID module includes a radio frequency circuit, an MCU and an NFC module.

[0028] Electric bicycle management system Figure 3 As shown, in addition to the electronic license plate, it also includes an active RFID signal receiving base station installed at intersections such as T-shaped and cross-shaped intersections, a Lora gateway installed on the road, a background server that forms data transmission with the active RFID signal receiving base station and the Lora gateway respectively, and a mobile inspection device equipped with a contactless card reader.

[0029] The above-mentioned power module provides the required DC power for the normal operation of the active RFID module, Lora module and three-axis acceleration module. The power module includes a rechargeable soft-pack battery and a battery charging circuit. The battery charging circuit can adopt the existing general circuit design structure. The soft-pack battery has a capacity of 1000mAh and an independent working life of 3 years when separated from the electric bicycle battery. The input range of the battery charging circuit is DC36V-60V, covering most electric bicycle battery voltages on the market.

[0030] The active RFID module uses a 2.4GHZ RFID module, the RF circuit transmission power of which is 4dbm, about 2.5mW, which is lower than the 10mW standard indicator of the Radio Management Committee. At the same time, the reading range of 2.4GHZ RFID can reach about 300 meters. Moreover, the 2.4GHZ RFID module uses the highly integrated SOC chip NRF52832, which integrates the NFC function, and the standard card reading distance of the NFC module is 1-5cm.

[0031] The radio frequency circuit is connected to an ANT antenna. During the driving of the electric bicycle, the ANT antenna of the radio frequency circuit transmits a radio frequency signal with a position signal in real time, which is received by the active RFID signal receiving base station and uploaded to the background server to calculate the driving trajectory of the electric bicycle, which is beneficial to the management of reverse driving and running red lights. The antenna ANT of the 2.4GHZ RFID module is an omnidirectional antenna with a gain of 6dBi and a frequency range of 2400MHZ-2525MHZ.

[0032] The Lora module uses the SX1278 chip, with a communication range of about 1000 meters. The antenna ANT of the Lora module is an omnidirectional antenna with a gain of 6dBi and a frequency range of 433MHZ-470MHZ; the antenna ANT frequency of the NFC module is 13.56MHZ.

[0033] The three-axis acceleration module is used to monitor the changes in acceleration perpendicular to the body of the electric bicycle, and transmit the detected information to the MCU. The MCU determines whether the electric bicycle has fallen based on a series of changes in the acceleration parameters of the three-axis acceleration perpendicular to the body of the electric bicycle. The MCU transmits the judgment result information to the Lora module through the SPI line, and transmits it to the Lora gateway through the Lora antenna. The three-axis acceleration module uses KX023, and the three-axis accelerations are ±2g, ±4g, and ±8g respectively.

[0034] When an electric bicycle equipped with an electronic license plate is driven in the city and surrounding roads, the 2.4GHZ RFID module in the electronic license plate continuously emits active RFID signals and reports its own active RFID signals to the active RFID base station. Different active RFID base stations record the entry and exit time of the electric bicycle according to the received active RFID signals, and report the data to the background server. The background server calculates the running track of the electric bicycle based on the relevant data. At the same time, the Lora module in the electronic license plate continuously emits Lora signals, reporting the speed, battery temperature and whether the electric bicycle falls to the Lora gateway. The Lora gateway reports the relevant data to the background server. The background server displays the running status of the electric bicycle in real time and sends the running status information of the electric bicycle to the transportation department, the public security department and the electric bicycle user. The active RFID handheld device and the mobile phone with NFC function scan the electronic license plate installed on the electric bicycle to check whether the vehicle is legal and whether the working status is normal.

[0035] As another implementation method, when the active RFID base station antenna arranged at the road intersection is replaced with a directional antenna, the driving direction is fixed, and it is possible to capture illegal behaviors such as electric bicycles driving in the wrong direction and running red lights.

[0036] The present invention is not limited to the above-mentioned specific implementation modes. A person skilled in the art may adopt other various specific implementation modes to implement the present invention based on the contents disclosed in the present invention, or any simple changes or modifications made to the design structure and concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A special license plate for electric bicycles, comprising a license plate shell, a group of visible numbers are arranged on the outer surface of the license plate shell, a circuit board is arranged inside the license plate shell, an external interface electrically connected to the circuit board is arranged on the license plate shell, the external interface is connected to the central control system of the electric bicycle through a wiring harness, an active RFID module, a Lora module, a three-axis acceleration module, and a power module are arranged on the circuit board, the active RFID module is connected to the Lora module and the three-axis acceleration module through an SPI interface respectively; the power module provides the required DC power for the normal operation of the active RFID module, the Lora module and the three-axis acceleration module; The active RFID module includes a radio frequency circuit, an MCU and an NFC module; one interface of the radio frequency circuit is connected to an ANT antenna for transmitting a radio frequency signal with location information, and another interface of the radio frequency circuit is connected to the MCU; one port of the NFC module is connected to an ANT antenna for transmitting a radio frequency signal with NFC ID information, and another port of the NFC module is connected to the MCU; the Lora module includes a Lora radio frequency circuit, and the Lora radio frequency circuit is connected to an ANT antenna for transmitting a radio frequency signal with the running status of the electric bicycle; the three-axis acceleration module is connected to the MCU and transmits the detected acceleration change information perpendicular to the body direction of the electric bicycle to the MCU; The external interface includes positive and negative electrodes of the power supply and a serial port UART. The positive and negative electrodes of the power supply are internally connected to the power module to provide DC power. The serial port UART is internally connected to the MCU to facilitate providing the speed and battery temperature parameters of the electric bicycle directly obtained by the electric bicycle central control system to the MCU. The MUC organizes the obtained parameters and transmits them to the Lora module via the SPI line, and transmits them to the Lora gateway via the Lora antenna.

2. An electric bicycle intelligent management system, comprising an electronic license plate installed on an electric bicycle, an active RFID signal receiving base station installed at an intersection, a Lora gateway installed on the road, a backend server for data transmission with the active RFID signal receiving base station and the Lora gateway, and a mobile inspection device equipped with a contactless card reader. The electronic license plate includes an active RFID module, a Lora module, a power module, a three-axis acceleration module and an external interface. The active RFID module is connected to the Lora module and the three-axis acceleration module through an SPI interface respectively; the power module provides the required direct current for the normal operation of the active RFID module, the Lora module and the three-axis acceleration module. The active RFID module includes a radio frequency circuit, an MCU and an NFC module; one interface of the radio frequency circuit is connected to an ANT antenna for transmitting a radio frequency signal with location information, another interface of the radio frequency circuit is connected to the MCU, one port of the NFC module is connected to an ANT antenna for transmitting a radio frequency signal with NFC ID information, and another port of the NFC module is connected to the MCU. The Lora module includes a Lora radio frequency circuit, and the Lora radio frequency circuit is connected to an ANT antenna for transmitting a radio frequency signal with the running status of the electric bicycle; The three-axis acceleration module is connected to the MCU and transmits the detected acceleration change information perpendicular to the direction of the electric bicycle body to the MCU. The external interface includes positive and negative electrodes of the power supply and a serial UART. The positive and negative electrodes of the power supply are internally connected to the power module to provide a DC power supply. The serial UART is internally connected to the MCU to facilitate providing the speed and battery temperature parameters of the electric bicycle directly obtained by the electric bicycle central control system to the MCU. The MUC organizes the obtained parameters and transmits them to the Lora module through the SPI line, and transmits them to the Lora gateway via the Lora antenna. The backend server is connected to an active RFID signal receiving base station and a Lora gateway through a network respectively; the active RFID signal receiving base station is connected to an active RFID radio frequency signal receiving ANT antenna, and the active RFID signal receiving base station uploads the received radio frequency signal with location information from the electronic license plate to the backend server; the Lora gateway is connected to a Lora radio frequency signal receiving ANT antenna, and the Lora gateway uploads the received radio frequency signal with the running status of the electric bicycle to the backend server; the backend server receives and processes the active RFID signal from the active RFID signal receiving base station and the Lora signal from the Lora gateway respectively, and sends the processed signals to the transportation department, the public security department and the owner of the electric bicycle; The mobile inspection device obtains the vehicle owner's identity information stored in the electronic license plate by means of a contactless card reading method.

3. The electric bicycle intelligent management system according to claim 2, characterized in that: The mobile inspection device is an RFID handheld device or a mobile phone with NFC function.

4. An electric bicycle intelligent management system according to claim 2 or 3, characterized in that: The active RFID module adopts a highly integrated SOC chip NRF52832, and the SOC chip NRF52832 is integrated with an NFC module.

5. An electric bicycle intelligent management system according to claim 2 or 3, characterized in that: The three-axis acceleration module adopts KX023, and the three-axis accelerations are ±2g, ±4g, and ±8g respectively.

6. An electric bicycle intelligent management system according to claim 2 or 3, characterized in that: The Lora module uses the SX1278 chip.

7. An electric bicycle intelligent management system according to claim 2 or 3, characterized in that: The electronic license plate corresponds to the electric bicycle one by one, and the electronic license plate has a unique ID number, which includes an active RFID ID, a Lora ID and an NFC ID; the active RFID ID, the Lora ID and the NFC ID numbers are consistent, and the active RFID ID, the Lora ID and the NFC ID are stored in the active RFID module, the Lora module and the NFC module respectively.

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