Radar tail lamp based on horse race lamp

Abstract

The utility model relates to the technical field of riding vehicle accessories, in particular to a radar tail lamp based on a horse race lamp and a circuit thereof, the radar tail lamp comprises a shell and a circuit board arranged in the shell, a radar and the horse race lamp are arranged on the circuit board, and the horse race lamp is arranged around the radar; an annular light-transmitting belt is arranged on the shell and matched with the marquee. The horse race lamp is combined with the radar, the radar is used for detecting a target of a rear vehicle in real time, and when early warning is triggered, early warning prompt is carried out through lamplight. The horse race lamp reminds a rear coming vehicle to pay attention to avoiding through rich multi-mode light display forms, large light-emitting area and high brightness, attention of a rear target is more easily attracted, interestingness is high, the warning effect of the radar tail lamp is effectively improved, and the rear-end collision situation is reduced. The marquee is arranged around the radar module, the overall structure miniaturization of the device is facilitated, the portability is improved, meanwhile, a larger lighting area can be obtained in a limited space range, and the warning effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cycling vehicle accessories, in particular to a radar taillight based on a marquee. Background Art

[0002] Automotive radar is widely used in modern vehicles, primarily to enhance driving safety and enable advanced driver assistance systems (ADAS) and autonomous driving features. Specific applications include parking assistance, adaptive cruise control (ACC), automatic emergency braking (AEB), blind spot monitoring, lane change assistance, rear collision warning (RCW), pedestrian detection, and advanced autonomous driving. By providing precise distance, speed, and angle information, automotive radar significantly enhances a vehicle's environmental awareness, thereby improving driving safety and comfort.

[0003] Cycling radars are typically placed on the rear of a vehicle when in use. When combined with taillights, their integration and convenience are greatly enhanced. Radar taillights are intelligent devices that combine radar technology and taillight functionality, primarily used to improve cycling or driving safety. These products typically feature radar detection capabilities, detecting vehicles approaching from behind and alerting the user to potential dangers through lights, sounds, or other warning signals. In the cycling sector, radar taillights, with built-in radar technology, can accurately detect approaching vehicles from behind and alert the rider through features such as flashing modes and radar warnings. These products not only improve the safety of nighttime cycling, but also increase the convenience and enjoyment of cycling.

[0004] Currently, existing radar taillights on the market generally use a single lamp bead, with a clear distinction between the light and radar components. These are large in size, have a single lighting pattern, and provide limited warning effects for following vehicles. Therefore, it is necessary to design an optimized radar taillight solution to enhance its warning function. Utility Model Content

[0005] Based on the above description, the present invention provides a radar taillight based on a marquee, which enhances the warning effect of the radar taillight and improves the safety and fun of riding.

[0006] According to the first aspect of the utility model, the utility model provides a radar taillight based on a marquee, including a shell and a circuit board arranged in the shell, the circuit board is provided with a radar and a marquee, the marquee is arranged around the radar, and the shell is provided with an annular light-transmitting band, and the annular light-transmitting band is adapted to the marquee.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Preferably, the marquee includes a plurality of lamp beads arranged in a ring shape, the annular light-transmitting belt is provided with a lens structure corresponding one-to-one to the plurality of lamp beads, and the circumference of the lens structure is provided with optical patterns.

[0009] Preferably, an indicator light is further provided on the circuit board, and a light guide column adapted to the indicator light is provided on the housing, and the light guide column passes through the housing.

[0010] Preferably, the circuit board is further provided with a switch, a battery and an external interface, and the switch, the battery and the external interface are arranged on a side of the circuit board away from the marquee.

[0011] According to a second aspect of the present invention, the present invention further provides a marquee-based radar taillight circuit, comprising a radar module, a main control module, a marquee module, and a switching power supply module, wherein:

[0012] The radar module is in communication with the main control module and is used to obtain the distance and speed of the target based on the difference between the transmitted wave signal and the echo signal;

[0013] The main control module is connected to the marquee module by signal, and is used to issue a warning signal according to the distance and speed of the target;

[0014] The marquee module is configured to display a corresponding marquee warning image according to the warning signal;

[0015] The switching power supply module is used to provide working power for the radar module, main control module and marquee module.

[0016] Preferably, the radar module includes a radar antenna board, an antenna power-on switch, a signal preprocessing circuit and a radar MCU, wherein:

[0017] The two ends of the switch channel of the antenna power-on switch are connected to the switching power supply module and the radar antenna board in a one-to-one correspondence, and the control end of the antenna power-on switch is connected to the radar MCU to receive an antenna power-on enable signal;

[0018] The radar antenna plate is used to send out transmission wave signals and receive echo signals;

[0019] The input end of the signal preprocessing circuit is connected to the radar antenna board, and the output end of the signal preprocessing circuit is connected to the sampling end of the radar MCU, which is used to filter the transmission wave signal and the echo signal and isolate the signals;

[0020] The radar MCU is used to sample the pre-processed transmission wave signal and echo signal, and calculate the distance and speed of the target based on the difference between the transmission wave signal and the echo signal.

[0021] Preferably, the main control module includes a Bluetooth MCU and a Bluetooth antenna connected to each other, wherein:

[0022] The Bluetooth MCU is communicatively connected to the radar MCU and is used to determine whether to issue an early warning signal based on the distance and speed of the target;

[0023] The Bluetooth antenna is used for external communication to report the warning status.

[0024] Preferably, the marquee module includes a driving module and multiple lamp beads, the input end of the driving module is communicatively connected to the main control module, and the multiple output ends of the driving module are connected to the multiple lamp beads in a one-to-one correspondence, for independently controlling the status of each lamp bead according to the early warning signal.

[0025] Preferably, it further includes a sensor module, which is communicatively connected to the main control module and is used to monitor the vehicle's motion state data.

[0026] Preferably, the switching power supply module includes a battery, a charging circuit, a power switch circuit, a voltage conversion circuit and a linear voltage stabilization circuit, wherein:

[0027] The input end of the charging circuit is used to connect to the charging interface, the output end of the charging circuit is connected to the battery, and the charging circuit is provided with a power detection unit, which is connected to the main control module;

[0028] The input end of the linear voltage regulator circuit is connected to a battery, and the output end thereof outputs a first voltage, wherein the first voltage is used to provide working power for the radar module, the main control module, and the marquee module;

[0029] The power switch circuit is provided with a manual switch, the output end of the power switch circuit is connected to the control end of the linear voltage regulator circuit, and the power switch circuit is used to control the working state of the linear voltage regulator circuit;

[0030] The input end of the voltage conversion circuit is connected to a battery, and the output end thereof outputs a second voltage, and the second voltage provides a driving power supply for the marquee module.

[0031] Compared with the existing technology, the technical solution of the present application has the following beneficial technical effects: the utility model combines a marquee with a radar, and the radar is used to detect the target of the vehicle behind in real time. When the warning triggering conditions are met, the marquee is used to provide a light prompt. The marquee uses a rich multi-mode light display to remind the vehicle behind to pay attention to avoid it with high brightness, which is more likely to attract the attention of the target behind, and the warning effect and fun are stronger. Compared with the traditional solution, the brightness of the radar taillight is higher than that of a single lamp bead, which effectively improves the warning effect of the radar taillight and reduces the occurrence of rear-end collisions. The marquee is arranged around the radar module, which is conducive to the miniaturization of the overall structure of the device and improves portability. At the same time, within a limited space, a larger range of lighting area can be obtained to improve the warning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the overall appearance of a radar taillight from a certain viewing angle provided by an embodiment of the present utility model;

[0033] FIG2 is a schematic diagram of the overall appearance structure of the radar taillight provided by an embodiment of the present invention from another perspective;

[0034] Figure 3 A cross-sectional view of a radar taillight provided in an embodiment of the present utility model;

[0035] Figure 4 A schematic diagram of the disassembled structure of the upper cover of the radar taillight housing provided by an embodiment of the utility model;

[0036] Figure 5 A bottom view of the lens on the radar taillight housing provided by an embodiment of the present utility model;

[0037] Figure 6 A schematic diagram of the overall principle of the radar taillight circuit provided by an embodiment of the utility model;

[0038] Figure 7 A block diagram of the switching power supply module circuit provided by an embodiment of the present utility model;

[0039] Figure 8 A circuit diagram of a radar module according to an embodiment of the present invention;

[0040] Figure 9 A schematic diagram of the circuit principle of the main control module provided in an embodiment of the utility model;

[0041] Figure 10 A schematic diagram of the indicator light circuit provided by an embodiment of the present utility model;

[0042] Figure 11 A schematic diagram of the circuit principle of the marquee module provided in an embodiment of the present utility model;

[0043] Figure 12 This is a schematic diagram of the accelerometer circuit principle provided by an embodiment of the utility model.

[0044] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0045] 1. Housing, 101. Upper cover, 1011. Annular light-transmitting strip, 1011a. Lens, 1011b. Optical pattern, 1012. Light guide, 1013. Non-transparent component, 102. Base, 1021. Button, 1022. Sealing plug, 1023. Mounting base, 1024. Lanyard hole, 2. Circuit board, 201. Radar, 202. Marquee, 203. Indicator light, 204. Switch, 205. Battery, 206. External interface, 3. Radar module, 301. Radar antenna board, 302. Antenna power-on switch, 303. Signal preprocessing circuit, 304. Radar MCU, 305. Radar power-on switch, 4. Main control module, 5. Marquee module, 6. Switching power supply module, 601. Charging port, 602. Charging circuit, 603. Power detection unit, 604. Voltage conversion circuit, 605. Power switch circuit, 606. Linear voltage regulator circuit, 7. Sensor module. DETAILED DESCRIPTION

[0046] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0048] It will be understood that spatial relational terms such as "under", "beneath", "below", "under", "above", "above", etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be understood that in addition to the orientations shown in the figures, spatial relational terms also include different orientations of the device in use and operation. For example, if the device in the drawings is turned over, the element or feature described as "under the other elements" or "under it" or "below it" will be oriented as "on" the other elements or features. Therefore, the exemplary terms "under" and "under" can include both upper and lower orientations. In addition, the device can also include alternative orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0049] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection" should be understood as "electrical connection", "communication connection", etc., if the connected circuits, modules, units, etc. can transmit electrical signals or data to each other.

[0050] When used herein, the singular forms "a", "an", and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0051] like Figure 1 Figure 2 shows the external structure of a radar taillight based on a marquee provided by this embodiment from multiple perspectives. Figure 3 A cross-sectional view of the radar taillight is shown.

[0052] Combine Figures 1 to 3 As shown, this embodiment provides a radar taillight based on a marquee, comprising a housing 1 and a circuit board 2 disposed in the housing 1, wherein the housing 1 comprises an upper cover 101 and a base 102, the upper cover 101 and the base 102 being connected to each other to form an accommodation space inside the housing 1, the circuit board 2 being disposed in the accommodation space and fixedly mounted on the base 102 by screws. The circuit board 2 is fixedly provided with a radar 201 and a marquee 202, so as to Figures 1-3 Taking the perspective of FIG as an example, the radar 201 is positioned in the center of the top surface of the circuit board 2, and the marquee 202 is arranged around the radar 201, forming a racetrack shape. An annular light-transmitting strip 1011 is provided on the upper cover 101 of the housing 1. The annular light-transmitting strip 1011 is adapted to mate with the marquee 202. When the marquee 202 is illuminated, its light is emitted through the annular light-transmitting strip 1011, forming a bright and interesting dynamic image of the marquee 202.

[0053] As can be understood, based on the shortcomings noted in the background art, this embodiment combines a marquee 202 with radar 201. Radar 201 is used to detect rear vehicles in real time. When the warning trigger condition is met, a light prompt is provided via the marquee 202 image. The marquee 202 uses a variety of multi-mode lighting displays, such as waterfall flashes and comet flashes, to dynamically and brightly warn rearward vehicles to give way, more easily attracting the attention of rearward targets and providing a more effective and engaging warning. Furthermore, compared to traditional solutions, the brightness of this radar taillight is higher than that of a single lamp bead, and the luminous area is larger, effectively enhancing the radar taillight's warning effectiveness and reducing the likelihood of rear-end collisions. Placing the marquee 202 around the radar module 3 facilitates the overall device's miniaturization and improves portability. Furthermore, within a limited space, a larger illuminated area can be achieved, enhancing the warning effect.

[0054] from Figure 3 As can be seen in FIG, the marquee 202 includes a plurality of lamp beads, which are arranged in a runway circle shape near the edge of the circuit board 2 and surround the radar 201. Figure 4 The figure shows a schematic diagram of the disassembled structure of the upper cover 101. The upper cover 101 includes a semi-transparent body (e.g., made of PCEXL1414) and an opaque member 1013 (e.g., made of ABS-757H). The semi-transparent body serves as the main support member, and the multiple opaque members 1013 are fixedly connected to the semi-transparent body and cooperate with each other. Due to the light-shielding effect of the opaque members 1013, an annular light-transmitting band 1011 is formed on the semi-transparent body that matches the marquee 202. Figure 5 The figure is a bottom view of the semi-transparent body, which shows the structure of the semi-transparent body located inside the accommodating space. Figure 5 As can be seen in the figure, the annular light-transmitting belt 1011 is provided with a lens 1011a structure corresponding to a plurality of lamp beads, and all the lenses 1011a are combined to form a runway circle. The lens 1011a can enhance the focusing effect of the marquee 202 and help to increase the brightness of the marquee 202. The lens 1011a structure is provided with optical lines 1011b around the periphery, such as Figure 5 The optical patterns 1011b may be arranged along the entire annular light-transmitting band 1011 or along a single lens 1011a, and may enhance the optical effect of the lens 1011a while saving material of the housing 1.

[0055] Combine Figure 1 、 Figures 3 to 5As shown, the circuit board 2 is also provided with an indicator light 203, which can be a high-brightness multi-color light. The indicator light 203 is used to indicate various working states of the radar tail light. The shell 1 is provided with a light guide column 1012 matched with the indicator light 203, which penetrates the shell 1 through a light guide hole provided on the shell 1. The light guide column 1012 is made of a fully transparent material (e.g. PCE XL1414), which effectively guides and distributes the light emitted by the indicator light 203 to improve the display effect of the indicator light 203.

[0056] As shown in the cross-sectional view of Figure 3 , the circuit board 2 is also provided with a switch 204, a battery 205 and an external interface 206, which are arranged on the side of the circuit board 2 away from the marquee light 202. Specifically, the switch 204 is fixedly connected with the circuit board 2, and the base 102 of the shell 1 is provided with an elastic button 1021 which abuts against the operating end of the switch 204. When the button 1021 is pressed, the switch 204 can be operated. The switch 204 is used to turn on or off the radar tail light. The external interface can be a commonly used USB interface, such as a Type-C interface, which is used to connect external devices or charge. Since the battery 205 has a certain height dimension, the switch 204 and the external interface which also have a large height dimension are arranged on the same side of the circuit board 2, which is beneficial to fully utilize the space in the shell 1 and facilitate the miniaturization design of the device. In order to increase the firmness of the battery 205 installation, the bottom surface of the battery 205 can be pasted in the base 102 through heat dissipation glue or foam glue. In order to protect the external interface 206 from dust and water and improve the IP protection level of the device, as shown in Figure 2a and Figure 2b , a sealable plug 1022 matched with the external interface can be arranged on the base 102, which seals the external interface 206 when the device is not used.

[0057] In order to facilitate the installation of the radar tail light, a mounting seat 1023 can be arranged on the base 102. In order to improve the portability of the radar tail light and prevent it from being lost accidentally, a hanging rope hole 1024 can also be arranged on the outer side of the base 102, which is used to bind a safety rope.

[0058] As shown in the circuit principle diagram of Figure 6 , the present embodiment also provides a radar tail light circuit based on a marquee light, which includes a radar module 3, a main control module 4, a marquee light module 5 and a switching power supply module 6, wherein:

[0059] The radar module 3 is in signal connection with the main control module 4, and is used to obtain the distance and speed of the target according to the time difference between the transmitted wave signal and the echo signal;

[0060] The main control module 4 is in signal connection with the marquee module 5, and is used to send a warning signal according to the distance and speed of the target;

[0061] The marquee module 5 is used to display a corresponding marquee warning image according to the warning signal;

[0062] The switching power supply module 6 is used to provide working power for the radar module 3, the main control module 4 and the marquee module 5.

[0063] It can be understood that the switching power supply module 6 provides working power for the whole device. The radar module 3 sends a transmitted wave signal and receives an echo signal returned from the target, and calculates the distance of the target from the vehicle by analyzing the difference between the transmitted wave signal and the echo signal, such as the time difference. The relative speed of the target approaching the vehicle is obtained by the continuous change rule of the difference between the transmitted wave signal and the echo signal. The distance data and speed data obtained can be used as a basis for judging whether the target and the vehicle have a rear-end collision. The method of calculating distance and speed by radar through the time difference between the transmitted wave and the echo is prior art, which will not be described here. After the main control module 4 evaluates the rear-end collision risk, if it is determined that there is no rear-end collision risk, no warning signal will be sent; if it is determined that there is a rear-end collision risk, a warning signal will be sent immediately to drive the marquee module 5 to light according to the preset warning image. The marquee warning image can be set by the main control module 4, and according to the dot matrix control principle, a plurality of light warning modes can be preset.

[0064] In one possible implementation, as Figure 7 The switching power supply module 6 is shown in the principle block diagram. As Figure 7 The switching power supply module 6 includes a battery 205, a charging circuit 602, a power switch circuit 605, a voltage conversion circuit 604 and a linear voltage stabilizing circuit 606, wherein:

[0065] (1) The input end of the charging circuit 602 is used to connect a charging interface 601 (such as a USB interface); Figure 7The output of the charging circuit 602 is connected to the battery 205 to charge the battery 205. The charging circuit 602 can be implemented using a charging chip (model AW32006SPR). The charging circuit 602 includes a power detection unit 603, which is connected to the main control module 4. For example, the power detection unit 603 can be implemented using a coulomb counter (model CW2215BAAC / OM70201WV). The coulomb counter is used to provide feedback to the main control module 4 on the battery 205 power level, which serves as a basis for determining whether to enable low-brightness power saving mode.

[0066] (2) The input end of the linear voltage regulator circuit 606 is connected to the battery 205, and the output end thereof outputs a first voltage, for example Figure 7 The first voltage is VCC_2V6 (+2.6V voltage) shown. This first voltage is used to provide operating power for the radar module 3, the main control module 4, and the ticker module 5. The linear voltage regulator circuit 606 can be implemented using a low-dropout linear regulator (e.g., AW37420STR / SGM61020S / ETA5050 / LP3981H-02 / SGM2053S-ADJ).

[0067] (3) The power switch circuit 605 is provided with a manual switch 204, for example Figure 3 The manual push switch 204 shown in the structural diagram is preferably model K2-1109SE-A4SW / HRO. The output of the power switch circuit 605 is connected to the control terminal of the linear voltage regulator circuit 606, and the power switch circuit 605 is used to control the operating state of the linear voltage regulator circuit 606. The power switch circuit 605 can be implemented based on the application circuit of the cold reset and battery 205 disconnect switch 204 chip SGM4075-1.

[0068] (4) The input end of the voltage conversion circuit 604 is connected to the battery 205, and the output end thereof outputs a second voltage, for example Figure 7 The second voltage is VCC_3V3 (+3.3V voltage), and provides driving power for the marquee module 5. The voltage conversion circuit 604 is used to convert the battery 205 voltage into a stable second voltage, which can be implemented based on the DC-DC chip JW5250A.

[0069] In one possible implementation, Figure 8 As shown, the radar module 3 includes a radar antenna board 301, an antenna power-on switch 302, a signal pre-processing circuit 303 and a radar MCU 304, wherein:

[0070] (1) The radar antenna board 301 is connected to the radar MCU 304 via an SPI bus and is also connected to signals via some IO ports; the 24 GHz millimeter wave radar 201 antenna is set on the radar antenna board 301 and is used to send millimeter wave transmission signals and receive echo signals.

[0071] (2) In this embodiment, the antenna power-on switch 302 uses a P-MOS (e.g., model YJL2101W). The two ends of the switch channel of the antenna power-on switch 302 are connected to the switching power supply module 6 (VCC_2V6) and the power-on enable terminal of the radar antenna board 301 in a one-to-one correspondence. The control end of the antenna power-on switch 302 is connected to the radar MCU 304. The radar MCU 304 outputs an antenna power-on enable signal to the control end of the P-MOS. When the antenna power-on enable signal is valid, the radar antenna board 301 is powered on and operates.

[0072] (3) The input end of the signal preprocessing circuit 303 is connected to the radar antenna board 301, and the output end of the signal preprocessing circuit 303 is connected to the ADC sampling end of the radar MCU 304, which is used to filter the transmission wave signal and the echo signal and isolate the signals. Figure 8 As shown, there are two signal pre-processing circuits 303, one for pre-processing the transmission wave signal and the other for pre-processing the echo signal. Specifically, the original signal is first filtered by the filter RC Filter to remove the interference signal and ensure that the radar signal IF (such as Figure 8 The signal from IF1 or IF2 in the circuit is transmitted completely and correctly to the subsequent circuit; then, the signal is filtered again and electrically isolated by the operational amplifier OPA (such as model LMV358TP / AWS79032) as a follower to filter the signal after the filter RC filter. The pre-processed signal is transmitted completely and correctly to the ADC sampling end of the MCU.

[0073] (4) The radar MCU 304 can be implemented using a microcontroller model AT32F403A, which is used to sample the pre-processed transmission wave signal and echo signal, and calculate the distance and speed of the target based on the time difference between the transmission wave signal and the echo signal. The power-on enable end of the radar MCU 304 is also provided with a radar power-on switch 305 load Switch, and the radar power-on switch 305 load Switch is controlled by the main control module 4. When the main control module 4 controls the radar power-on switch 305 load Switch to be turned on, the radar MCU 304 is powered on and operates; when the main control module 4 controls the radar power-on switch 305 load Switch to be turned off, the radar MCU 304 is powered off. The radar MCU 304 is also connected to the main control module 4 through the UART serial port and some IO ports.

[0074] In one possible implementation, Figure 9 As shown, a Bluetooth module is used as the main control module 4, and the main control module 4 includes a Bluetooth MCU and a Bluetooth antenna connected to each other, wherein:

[0075] The Bluetooth MCU is in communication with the radar MCU 304 and is used to determine whether to issue a warning signal based on the distance and speed of the target;

[0076] The Bluetooth antenna is used for external communication to report the warning status.

[0077] In this embodiment, Figure 9 As shown, the Bluetooth MCU U12 is implemented using the low-power RF chip nRF52832-QFAA-R. Please refer to the following table for the Bluetooth MCU U12 pin function assignment information:

[0078]

[0079] Combined with the above table and Figure 9As shown, the Bluetooth MCU U12 relies on the first voltage (VCC_2V6) output by the switching power supply module 6 to provide operating power. The antenna pin ANT of the Bluetooth MCU U12 is connected to the Bluetooth antenna through an LC oscillator composed of multiple inductors and capacitors to realize the transmission and reception of Bluetooth signals, thereby realizing communication with external devices. For example, real-time target monitoring information and early warning information are transmitted to the APP or the code table, the status of the vehicle behind the ego vehicle is visualized, the rider is reminded to ride carefully, and the safety of riding is improved. The Bluetooth MCU U12 realizes communication with the radar MCU 304 through a group of UART serial ports (P0.16 port and P0.17 port), and provides a radar 201 power enable signal to the radar MCU 304 through the P0.15 port. The Bluetooth MCU U12 is in communication connection with the marquee module 5 through the I2C1 bus (P0.26 port and P0.25 port), and also outputs a marquee 202 enable signal to the marquee module 5 through the P0.14 port. The Bluetooth MCU U12 uses the I2C0 bus (P0.01 port and P0.02 port) as a communication channel with various sensors (such as an accelerometer), and obtains a sensor interrupt signal through the P0.10 port. The Bluetooth MCU U12 uses the SWDIO pin and the SWCLK pin as a program debugging channel. The Bluetooth MCU U12 uses a group of UART serial ports (P0.03 port and P0.04 port) as a test channel. The Bluetooth MCU U12 outputs a charging enable signal to the switching power supply module 6 through the P0.05 port, obtains an input state signal of the charging interface 601 through the P0.07 port, obtains a charging switch 204 state detection signal through the P0.09 port, and obtains a switch 204 hold state signal of the power supply switching circuit 605 through the P0.08 port. The clock circuit of the Bluetooth MCU U12 is set according to conventional means, which will not be described here.

[0080] The radar tail light circuit further includes an indicator light 203 circuit connected with the Bluetooth MCU U12 through an IO port, Figure 10 for signal connection with Figure 9 the Bluetooth MCU U12. As shown, Figure 10 the Bluetooth MCU U12 outputs blue light, red light, and green light control signals to the indicator light 203 circuit through the P0.11 port, the P0.12 port, and the P0.13 port. The indicator light 203 circuit includes a three-color light D2, such as model 19-337 / R6GHBHC-A01 / 2T / EVERLIGHT. The three input ends of the blue light, the red light, and the green light of the three-color light D2 are connected to the P0.11 port, the P0.12 port, and the P0.13 port of the Bluetooth MCU U12, respectively. The three output ends of the three-color light D2 are grounded.

[0081] In one possible implementation, Figure 11As shown, the running light module 5 includes a driving module U26 and a plurality of lamp beads (D6~D17). The driving module U26 can be implemented by model AW21012, and the lamp beads can be implemented by model LL836R6AC-H01T4. The input end of the driving module U26 is in communication connection with the Bluetooth MCU U12 through an I2C1 bus, and a plurality of output ends of the driving module U26 are connected with the lamp beads D6~D17 one by one, for independently controlling the state of each lamp bead according to the early warning signal, such as making the plurality of lamp beads present a waterfall flash, a comet flash and the like mode for light prompting through a preprogrammed setting.

[0082] In one possible implementation, as shown in the figure, a sensor module 7 is further provided, which is illustrated by taking an accelerometer U13 (model SC7A22) as an example. Figure 12 The accelerometer U13 takes VCC_2V6 output by the switching power supply module 6 as a working power supply, and is in communication connection with the Bluetooth MCU U2 through an I2C0 bus, wherein an interrupt signal pin INT1 is connected with a P0.10 port of the Bluetooth MCU U2. The accelerometer U13 is used for monitoring the motion state data of the vehicle and uploading to the Bluetooth MCU U2, such as the forward or static state of the vehicle. When the Bluetooth MCU U2 judges that the vehicle is in a real-time condition such as braking or static according to the monitored motion state of the vehicle, the Bluetooth MCU U2 outputs a related reaction, such as high brightness for braking and low brightness for saving power for static.

[0083] The radar tail light scheme provided by the utility model combines the running light 202 with the radar 201, the radar 201 is used for detecting a rear target in real time, when reaching a prewarning triggering condition, light prompting is carried out through the running light 202. The running light 202 carries out high-brightness reminding of the rear vehicle through rich multi-mode light display forms, is more easy to arouse the attention of the rear target, and the warning effect and the interestingness are stronger. And compared with the traditional scheme, the light brightness of the radar tail light is higher than the single lamp bead brightness, effectively improves the warning effect of the radar tail light, reduces the occurrence of rear-end collision. The running light 202 is arranged around the radar module 3, is beneficial to the miniaturization of the whole device, improves the portability, and meanwhile, in the limited space range, a larger range of light area can be obtained, and the warning effect is improved.

[0084] The above only describes the preferred embodiments of the utility model and does not limit the utility model, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A radar taillight based on a marquee, characterized in that: The invention comprises a housing (1) and a circuit board (2) arranged in the housing (1); a radar (201) and a marquee (202) are provided on the circuit board (2); the marquee (202) is arranged around the radar (201); and an annular light-transmitting band (1011) is provided on the housing (1); the annular light-transmitting band (1011) is adapted to the marquee (202).

2. The radar taillight based on a marquee according to claim 1, characterized in that: The marquee (202) comprises a plurality of lamp beads arranged in a ring shape, the annular light-transmitting band (1011) is provided with a lens (1011a) structure corresponding one-to-one to the plurality of lamp beads, and the lens (1011a) structure is provided with optical patterns (1011b) in the circumference.

3. The radar taillight based on a marquee according to claim 1, characterized in that: An indicator light (203) is also provided on the circuit board (2), and a light guide column (1012) adapted to the indicator light (203) is provided on the housing (1), wherein the light guide column (1012) passes through the housing (1).

4. The radar taillight based on a marquee according to claim 1, characterized in that: The circuit board (2) is further provided with a switch (204), a battery (205) and an external interface (206); the switch (204), the battery (205) and the external interface (206) are arranged on a side of the circuit board (2) facing away from the marquee (202).

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