Portable two-wheeled vehicle backward early warning system based on millimeter wave radar

Abstract

The utility model relates to a portable two-wheeled vehicle backward early warning system based on a millimeter wave radar, comprising a detection unit, the detection unit comprises a sensor module, a first communication module and a first battery module, the first battery module is used for supplying power to the detection unit, the sensor module is constructed based on a millimeter wave radar sensor, and the first communication module is used for communicating with the first battery module; the radar receiver is used for receiving radar echo signals to obtain related data of rear vehicles; the display unit comprises a second communication module, an execution module, a second battery module and a display module, the second battery module is used for supplying power to the display unit, and the second communication module is in communication connection with the first communication module and used for obtaining related data, collected by the detection unit, of the rear vehicle. The execution module is used for controlling the display module to display. According to the utility model, distance, angle and relative speed information of a rear vehicle is acquired based on the millimeter-wave radar. And visual early warning is provided through on-off, color change and flicker frequency of the LED lamps.

Description

TECHNICAL FIELD

[0001] The utility model relates to the application related technical field of millimeter wave radar especially relates to portable two -wheeled vehicle rear warning system based on millimeter wave radar. BACKGROUND

[0002] With the continuous growth of traffic flow, two-wheeled vehicles (such as motorcycles and bicycles) become an important choice for people to travel due to their flexible and convenient characteristics. However, two-wheeled vehicle drivers often face potential threats from rear vehicles, especially when changing lanes or turning, limited rear visibility can lead to accidents. Traditional rearview mirrors have poor visibility at night or in bad weather conditions, making it difficult to provide reliable rear visibility. Currently, there are some safety assistance systems on the market designed for four-wheeled vehicles, such as blind spot monitoring systems (BSD), lane change assistance systems (LCA), etc., but these systems usually require the vehicle to have certain electrical architecture support and have high installation costs, which are not suitable for most existing two-wheeled vehicles. At the same time, there are some solutions on the market that try to integrate warning functions into rearview mirrors, but these solutions often rely on fixed installation positions, which are not friendly to users who want to retrofit later, and have poor universality among different vehicle models. SUMMARY

[0003] The utility model aims at at least solve one of the deficiencies of prior art, provide portable two -wheeled vehicle rear warning system based on millimeter wave radar.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] Specifically, a portable two-wheeled vehicle rear warning system based on millimeter wave radar is proposed, which includes:

[0006] A detection unit includes a sensor module, a first communication module and a first battery module, wherein the first battery module is used to power the detection unit, the sensor module is based on a millimeter wave radar sensor and is used to obtain rear vehicle related data by receiving radar echo signals, and the related data includes the distance, relative speed and angle of the rear vehicle;

[0007] A display unit includes a second communication module, an execution module, a second battery module and a display module, wherein the second battery module is used to power the display unit, the second communication module is in communication connection with the first communication module and is used to obtain the rear vehicle related data collected by the detection unit, the execution module is used to determine a preset control mode by comparing the rear vehicle related data with a preset judgment condition, and the display module is displayed according to the determined control mode.

[0008] Further, specifically, the display module comprises a left LED lamp and a right LED lamp, the left LED lamp is lighted when there is a vehicle on the left side, and the right LED lamp is lighted when there is a vehicle on the right side.

[0009] Further, specifically, the sensor module is constructed based on a 24GHz millimeter wave radar chip Skyreally RC2412.

[0010] Further, specifically, the first communication module and the second communication module are both constructed based on an nRF51822 Bluetooth chip.

[0011] Further, the detection unit can also connect a user's code table or mobile phone based on the ANT protocol of the Bluetooth through the first communication module, and transmit the related data to the user's code table or mobile phone.

[0012] Further, specifically, the execution module is constructed based on an LED driving chip with a model of TX6121.

[0013] Further, specifically, the first battery module and the second battery module are both constructed based on a DLG 602030 lithium battery, which provides a voltage of 3.7V, a capacity of 400mAh and an energy of 1.48Wh.

[0014] Further, the PSAM board card is also provided with an expansion serial port 2 and an expansion IO port.

[0015] The utility model provides a portable two-wheeled vehicle backward early warning system based on millimeter wave radar, and the distance, angle and relative speed information of the rear vehicle are collected based on millimeter wave radar. And through the light and dark, color transformation and flicker frequency of LED lamp, intuitive early warning is provided, or more accurate early warning information is sent to the user code table or mobile phone. The system is easy to install, and is suitable for various two-wheeled vehicle models, especially for two-wheeled vehicle users who want to improve safety through simple modification. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and other features of the present disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which like reference numerals designate the same or similar elements, and in which:

[0017] Figure 1 The structure principle block diagram of the portable two-wheeled vehicle backward early warning system based on millimeter wave radar is shown.

[0018] Figure 2The utility model discloses a portable two-wheeled vehicle rearward early warning system based on millimeter wave radar. DETAILED DESCRIPTION

[0019] The utility model discloses the conception, specific structure and the technical effect of producing of embodiment and accompanying drawing are clearly, completely described below, to fully understand the purpose, scheme and effect of the utility model. It is explained that the embodiment in this application and the feature in the embodiment can be combined mutually in the case where there is no conflict. The same reference signs used in the drawing indicate the same or similar parts.

[0020] REFERENCE Figure 1 , embodiment 1, the utility model discloses a portable two-wheeled vehicle rearward early warning system based on millimeter wave radar, including:

[0021] Detection unit, the detection unit includes sensor module, first communication module and first battery module, wherein first battery module is used to power detection unit, sensor module is based on millimeter wave radar sensor construction and is used to obtain rear vehicle related data through receiving radar echo signal, and the related data includes the distance, relative speed and angle of rear vehicle;

[0022] Display unit, the display unit includes second communication module, execution module, second battery module and display module, wherein second battery module is used to power display unit, second communication module is connected with first communication module and is used to obtain rear vehicle related data collected by detection unit, and the execution module is used to determine the preset control mode by comparing the rear vehicle related data with the preset judgment condition, and the display module is shown according to the determined control mode.

[0023] When installing, display unit is installed at the head respectively, and one detection unit is installed behind the seat, and the radar antenna needs to be opposite to the rear.

[0024] In this embodiment 1, the distance, angle and relative speed information of rear vehicle are collected based on millimeter wave radar. And intuitive early warning is provided through the light and off, color transformation and flicker frequency of LED lamp, or more accurate early warning information is sent to user code table or mobile phone. The system is easy to install, and is suitable for various two-wheeled vehicle models, especially for two-wheeled vehicle users who want to improve safety through simple modification.

[0025] As a preferred embodiment of the utility model, specifically, the display module includes left LED lamp and right LED lamp, when there is a car on the left side, the left LED lamp will be lit, and when there is a car on the right side, the right LED lamp will be lit. The lamp is designed to be directly pasted on the head, which is convenient for users to install quickly.

[0026] In the preferred embodiment, the system has one display module including two LED indicator lights, which are designed to be directly attached to the front of the vehicle for easy installation by the user. The warning information of the vehicle behind is intuitively displayed by different colors and flashing modes of the lights, including the distance, relative speed and angle of the vehicle. For example, when there is a vehicle coming from the left, the left indicator light will be lit; when there is a vehicle coming from the right, the right indicator light will be lit. If the distance of the coming vehicle is far and the driving speed is approximately the same as that of the observation point vehicle, i.e. the relative speed is moderate, the corresponding indicator light will display a stable green light, indicating that the relative position between the two vehicles is safe. As the coming vehicle gradually approaches, even if the relative speed of the two vehicles remains at a relatively moderate level, the indicator light will start to slowly flash, thereby reminding the user to pay attention to the upcoming close-range overtaking situation. If the relative speed of the coming vehicle is large, the indicator light will turn red and flash quickly, thereby prompting the user to take immediate action to avoid possible collision. Only the corresponding parameter threshold range needs to be set, and when the relevant parameters reach the preset parameter threshold range, the preset trigger time of the parameter range, i.e. the preset control mode of the display module, can be triggered. This process is burned in advance and does not affect the actual use process.

[0027] As a preferred embodiment of the utility model, specifically, the sensor module is constructed based on a 24GHz millimeter wave radar chip Skyreally RC2412.

[0028] In the preferred embodiment, the sensor module selects the 24GHz millimeter wave radar chip Skyreally RC2412, which has the characteristics of high precision, small size and low power consumption. The chip adopts a 1T2R antenna design, has a built-in data processing function, and can provide more accurate target detection capability, which is very suitable for real-time detection of the surrounding traffic environment of a two-wheeled vehicle. The radar needs to be installed at the tail of the vehicle, with the antenna facing the rear of the vehicle. By obtaining the echo signal of the vehicle coming from the rear and using techniques such as Fourier transform, Doppler effect and angle estimation, the distance, relative speed and angle information of the vehicle coming from the rear can be output. These information will determine the color, brightness and flashing mode of the LED light.

[0029] In addition, in order to simplify the control logic and use binary information to control the color and flashing mode of the light, a set of binary information coding is customized, specifically: a 4-bit binary number is used to represent different states, wherein the 4th bit (the highest bit) and the 3rd bit represent the on-off state of the left and right indicator lights, 0 represents light off and 1 represents light on; the 2nd bit and the 1st bit together represent the flashing mode, 00 represents no flashing, 01 represents slow flashing, 10 represents fast flashing, and 11 can be reserved for future expansion or not used.

[0030] As the preferred embodiment of the utility model, specifically, the first communication module and the second communication module are both based on nRF51822 Bluetooth chip construction. The detection unit can also connect the user's code table or mobile phone through the first communication module based on Bluetooth ANT protocol, and transmit the related data to the user's code table or mobile phone.

[0031] In the preferred embodiment, the system adopts 2 communication modules, which select 2 nRF51822 Bluetooth chips, and the chip supports multiple wireless communication protocols including Bluetooth Low Energy (BLE) 5.0, ANT and proprietary 2.4GHz wireless protocol. One of the nRF51822 chips is connected with the sensor module, responsible for sending the rear vehicle parameter information detected by the sensor; the other nRF51822 chip is connected with the execution module, used for receiving these rear vehicle information. In addition, the information transmitted by the radar can be connected to the user's code table through the Bluetooth ANT protocol, or transmitted to the user's mobile phone through NFC or Bluetooth.

[0032] As the preferred embodiment of the utility model, specifically, the execution module is based on the LED drive chip with model TX6121.

[0033] In the preferred embodiment, the LED drive chip is TX6121, the input voltage is 3.7V, and because the PWM signal is added at the DIM end, LED lamp dimming and linear dimming can be performed, and the functions of controlling different light on / off, color conversion and flicker frequency conversion are provided.

[0034] As the preferred embodiment of the utility model, specifically, the first battery module and the second battery module are both based on DLG 602030 lithium battery construction, providing 3.7V voltage, capacity of 400mAh, and energy of 1.48Wh.

[0035] In the preferred embodiment, the system has 2 power modules, which include 2 DLG 602030 lithium batteries, providing 3.7V voltage, capacity of 400mAh, and energy of 1.48Wh, one battery powers the sensor module, and the other battery powers the two LED lamps.

[0036] In addition, in specific application, a preferred circuit design schematic diagram of the related modules in the application is as shown in Figure 2 Considering the actual application problem, the voltage detection circuit, voltage stabilizing circuit and charging circuit of the power module are added, and the Bluetooth module is provided with a Bluetooth indicator light / existence indicator light circuit.

[0037] Although the description of the present application has been quite detailed and several embodiments have been described in particular, it is not intended to be limited to any of these details or embodiments or any particular embodiment, but should be considered to be a broad interpretation of the prior art by reference to the appended claims, so as to effectively cover the intended scope of the present application. In addition, the above description of the present application is made in embodiments that the inventor can foresee, and the purpose is to provide a useful description, and those non-essential changes to the present application that have not yet been foreseen can still represent equivalent changes to the present application.

[0038] The above is only a preferred embodiment of the present application, and the present application is not limited to the above embodiments, as long as the same means achieve the technical effect of the present application, it should belong to the protection scope of the present application. The technical scheme and / or implementation of the present application can have various modifications and changes.

Claims

1. A portable two-wheeled vehicle rear warning system based on millimeter-wave radar, characterized in that, include: The detection unit includes a sensor module, a first communication module, and a first battery module. The first battery module powers the detection unit. The sensor module is based on a millimeter-wave radar sensor and is used to acquire relevant data about vehicles behind by receiving radar echo signals. The relevant data includes the distance, relative speed, and angle of the vehicles behind. The display unit includes a second communication module, an execution module, a second battery module, and a display module. The second battery module powers the display unit. The second communication module is connected to the first communication module and is used to acquire relevant data about vehicles behind the detection unit. The execution module determines a preset control mode by comparing the relevant data about vehicles behind the detection unit with preset judgment conditions, and displays the data on the display module according to the determined control mode.

2. The portable two-wheeled vehicle rear warning system based on millimeter-wave radar according to claim 1, characterized in that, Specifically, the display module includes a left LED light and a right LED light. When a vehicle approaches from the left, the left LED light will be lit; when a vehicle approaches from the right, the right LED light will be lit.

3. The portable two-wheeled vehicle rear warning system based on millimeter-wave radar according to claim 1, characterized in that, Specifically, the sensor module is built on the 24GHz millimeter-wave radar chip Skyreally RC2412.

4. The portable two-wheeled vehicle rear warning system based on millimeter-wave radar according to claim 1, characterized in that, Specifically, both the first and second communication modules are built on the nRF51822 Bluetooth chip.

5. The portable two-wheeled vehicle rear warning system based on millimeter-wave radar according to claim 4, characterized in that, The detection unit can also connect to the user's cycling computer or mobile phone via the first communication module using the Bluetooth ANT protocol, and transmit the relevant data to the user's cycling computer or mobile phone.

6. The portable two-wheeled vehicle rear warning system based on millimeter-wave radar according to claim 1, characterized in that, Specifically, the execution module is built based on an LED driver chip of model TX6121.

7. The portable two-wheeled vehicle rear warning system based on millimeter-wave radar according to claim 1, characterized in that, Specifically, both the first and second battery modules are built on DLG 602030 lithium batteries, providing a voltage of 3.7V, a capacity of 400mAh, and an energy of 1.48Wh.

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