Active early warning type radar tail lamp for electric vehicle

Abstract

An active early warning type radar tail lamp for an electric vehicle comprises a tail lamp shell and a PCB arranged in the tail lamp shell, a radar chip is arranged on the PCB, the radar chip achieves real-time detection of the relative horizontal distance M and the relative linear distance N between the radar chip and a rear object in the mode that millimeter waves are emitted backwards, and an MCU chip and a Bluetooth IC are further arranged on the PCB. The Bluetooth IC is used for realizing Bluetooth connection with a vehicle owner, the MCU chip is electrically connected with an external sound-light alarm element, and the MCU chip receives measurement data of the radar chip at two continuous moments t1 and t2 and performs operation according to a built-in program; data can be accurately collected through the radar chip, the MCU chip carries out calculation according to the collected data, it can be guaranteed that a driver has enough safety distance and response time, and when the situation that the safety distance is small or the response time is insufficient is calculated, the MCU chip enables the sound-light alarm element to give a sound-light alarm, and the active early warning function is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of active early warning radar tail lights for electric vehicle. BACKGROUND

[0002] Motorcycle, electric vehicle is one of important traffic tools due to the flexibility of riding;When driving at night or in bad weather such as rain and snow, the safety of motorcycle, electric vehicle is difficult to be guaranteed, especially when turning, the driver is inconvenient to turn back to observe the situation of rear vehicle, there is certain security risk.

[0003] With the improvement of safety awareness, relevant vehicle manufacturing enterprises realize that configuring radar type anti-collision early warning device on motorcycle, electric vehicle can effectively reduce the probability of traffic accident;Through retrieval, it is found that there are several radar type anti-collision early warning patents, one example of which can be referred to as a kind of integrated anti-collision auxiliary early warning reflection device for motorcycle, electric vehicle disclosed in CN220114743U.

[0004] The applicant believes that the driving safety of motorcycle, electric vehicle is very important, and the mode of radar type anti-collision early warning device involved in the prior art is single, which cannot achieve accurate early warning, and it is difficult to meet the actual complex driving conditions, and needs to be further improved and perfected. SUMMARY

[0005] In view of the deficiencies in the above problems, the utility model provides a kind of active early warning radar tail light for electric vehicle.

[0006] To achieve the above purpose, the utility model provides a kind of active early warning radar tail light for electric vehicle, including tail lamp shell fixedly installed on the tail bracket of motorcycle, electric vehicle, PCB board configured in the tail lamp shell, radar chip is provided on the PCB board, the radar chip realizes the real-time detection of relative horizontal distance M and relative straight distance N with rear object by the way of emitting millimeter wave to the rear, MCU chip is also provided on the PCB board, the MCU chip is electrically connected with external audible and visual alarm element, the MCU chip receives the measurement data of the radar chip at two continuous instants t1, t2 And according to built-in program operation;

[0007] When relative horizontal distance M is greater than 0.75 meters and the calculated value of N2 / [(N2-N1) / ( t2- t1) ] is less than the set value T1 in the MCU chip, the MCU chip controls the audible and visual alarm element to make overtaking early warning response;

[0008] When the relative horizontal distance M is less than 0.75 meters and the calculated value of N2 / [ (N2-N1) / (t2-t1) ] is less than the set value T2 inside the MCU chip, the MCU chip controls the acousto-optic alarm element to make a following car warning response.

[0009] Further, the PCB board is further provided with a Bluetooth IC, and the Bluetooth IC is used for realizing Bluetooth connection with a car owner.

[0010] Further, the radar chip can detect the relative horizontal distance M of 4 meters.

[0011] Further, the acousto-optic alarm element includes a vehicle-mounted central control screen, a buzzer and a rearview mirror warning LED lamp.

[0012] Further, the MCU chip is electrically connected with a turn signal on the vehicle through a signal feedback circuit to identify whether the turn signal on the vehicle is in an open state.

[0013] Further, when it is identified that the turn signal on the vehicle is in the open state, the MCU chip makes the set value T1 become 1.5 times of the original set value.

[0014] Further, when the overtaking warning response occurs, the vehicle-mounted central control screen and the rearview mirror warning LED lamp controlled by the MCU chip are in a constant light state; when the following car warning response occurs, the vehicle-mounted central control screen and the rearview mirror warning LED lamp controlled by the MCU chip are in a flickering state, and the buzzer generates an alarm frequency of 80 times per minute.

[0015] The utility model has the beneficial effects that relative to prior art:

[0016] The radar chip can accurately collect data, the MCU chip calculates according to the collected data, can guarantee that the driver has enough safety distance and reaction time, when calculating that the safety distance is small or the reaction time is insufficient, the MCU chip will make the acousto-optic alarm element emit sound and light alarm, plays the initiative early warning function. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view of an initiative early warning type radar tail light for an electric vehicle;

[0018] Figure 2 It is Figure 1 the enlarged view of the PCB board in

[0019] Figure 3 It is Figure 2 another direction schematic view of

[0020] In the figure: 1, tail lamp shell; 2, PCB board; 3, radar chip; 4, MCU chip; 5, Bluetooth IC. DETAILED DESCRIPTION

[0021] As Figures 1-3 shown, the utility model discloses a kind of active early warning type radar tail lamps of electric vehicle, including the tail lamp shell 1 of fixed installation on the rear support of motorcycle, electric vehicle, PCB board 2 configured in tail lamp shell 1, radar chip 3 is equipped on PCB board 2, radar chip 3 is realized with rear object Real-time detection of relative horizontal distance M and relative straight distance N by the way of millimeter wave emission backwards, MCU chip 4, Bluetooth IC 5 are also equipped on PCB board 2, and Bluetooth IC 5 is used to realize Bluetooth connection with owner, MCU chip 4 is electrically connected with external sound-light alarm element, and MCU chip 4 receives the measurement data of radar chip 3 at two continuous instants t1, t2 and carries out operation according to built-in program;

[0022] when meeting relative horizontal distance M is greater than 0.75 meters and the calculated value of N2 / [(N2-N1) / ( t2- t1) ] is less than the set value T1 in MCU chip 4, MCU chip 4 controls the sound-light alarm element to make overtaking early warning response;

[0023] when meeting relative horizontal distance M is less than 0.75 meters and the calculated value of N2 / [(N2-N1) / ( t2- t1) ] is less than the set value T2 in MCU chip 4, MCU chip 4 controls the sound-light alarm element to make overtaking early warning response;

[0024] More specifically, the relative horizontal distance M that radar chip 3 can detect is 4 meters, i.e. total 8 meters on both sides of tail lamp, this setting avoids the false alarm when there is overtaking situation in outer lane.

[0025] Sound-light alarm element includes vehicle-mounted central control screen, buzzer, rearview mirror warning LED;

[0026] MCU chip 4 is electrically connected with the turn signal on the vehicle through a signal feedback circuit to identify whether the turn signal on the vehicle is in the on state, i.e. the condition of the steering switch on the electric vehicle or motorcycle is turned, and the steering switch sends an electrical signal for the MCU chip to identify;When identifying that the turn signal on the vehicle is in the on state, MCU chip 4 makes the set value T1 become 1.5 times of the original set value.

[0027] When overtaking early warning response occurs, vehicle-mounted central control screen and rearview mirror warning LED controlled by MCU chip 4 are in constant light state;When overtaking early warning response occurs, vehicle-mounted central control screen and rearview mirror warning LED controlled by MCU chip 4 are in flickering state, and the buzzer generates an alarm frequency of 80 times per minute.

[0028] The radar chip can accurately collect data, and the MCU chip calculates according to the collected data, so that the driver has enough safety distance and reaction time, and when the calculated safety distance is too small or the reaction time is not enough, the MCU chip makes the sound and light alarm element sound and light alarm, thereby playing a proactive warning function.

[0029] In specific use, for the convenience of understanding the utility model, the description is made in combination with the drawings;

[0030] When the relative horizontal distance M is greater than 0.75 meters, it is considered that the vehicle behind and the vehicle in front are not on the same lane, and the vehicle behind has the possibility of overtaking, N2 / [(N2-N1) / (t2-t1)] is the time for the vehicle behind to catch up with the vehicle in front, and the T1 value stored in the MCU chip has three gears by default, which are first gear T1=3.3 seconds, second gear T1=4 seconds and third gear T1=5 seconds, and the rider selects the T1 value gear through the mobile phone app and the Bluetooth IC.

[0031] In order to further understand the above T1 value, the following is assumed:

[0032] Under the condition that the turn signal is not turned on, it is assumed that the difference of (N2-N1) / (t2-t1) is 3m / s, that is, it is assumed that the speed difference of the two vehicles is measured as 3m / s at a certain moment, if the rider selects the first gear T1=3.3 seconds, the straight line distance N2 less than 9.9m will trigger the overtaking warning response; if the rider selects the second gear T1=4 seconds, the straight line distance N2 less than 12m will trigger the overtaking warning response; if the rider selects the third gear T1=5 seconds, the straight line distance N2 less than 15m will trigger the overtaking warning response.

[0033] Under the condition that the turn signal is turned on, in order to further ensure safety, the MCU chip makes the T1 value become 1.5 times of the original set value, that is, the first gear T1=5 seconds, the second gear T1=6 seconds and the third gear T1=7.5 seconds; similarly, it is assumed that the difference of (N2-N1) / (t2-t1) is 3m / s, that is, it is assumed that the speed difference of the two vehicles is measured as 3m / s at a certain moment, if the rider selects the first gear T1=5 seconds, the straight line distance N2 less than 15m will trigger the overtaking warning response; if the rider selects the second gear T1=6 seconds, the straight line distance N2 less than 18m will trigger the overtaking warning response; if the rider selects the third gear T1=7.5 seconds, the straight line distance N2 less than 22.5m will trigger the overtaking warning response.

[0034] Of course, in addition to the default gear, the rider can modify the T1 value of the default gear parameters to a custom value in the state of Bluetooth connection, and the T1 value is also adjusted to 1.5 times of the original setting value in the case of starting the turn signal, which can ensure the safety of turning, and reduce the occurrence of frequent early warning or long-term non-warning according to the traffic conditions of the user's riding section. In addition, when the rider is connected with Bluetooth, the MCU chip will upload the rider's setting value to the server for data analysis and summary, so as to correct the setting value, and the setting value can be updated when the system OTA.

[0035] In addition, the radar chip itself has a detection angle, which can distinguish the direction of the rear vehicle, and can identify whether it is on the left side or the right side according to the direction; when warning, the rearview mirror warning LED light of the corresponding direction is lit, which is convenient for the user to distinguish which direction the rear vehicle is.

[0036] When the relative horizontal distance M is less than 0.75 meters, at this time, it can be considered that the rear vehicle and the front vehicle are in the same lane, and the two vehicles are in the following driving condition, and the default value of T2 is 1.65 seconds, and the T2 value can also be adjusted in the applet or APP; similarly, assuming that the difference of (N2-N1) / (t2-t1) is 3m / s, that is, assuming that the speed difference of the two vehicles is 3m / s at a certain moment, if the measured straight line distance N2 is less than 4.95m, the following warning response will be triggered, that is, when the speed difference of the two vehicles is 3m / s, if the following distance is less than 4.95m, the following warning response will be triggered.

[0037] The above only describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An active warning radar taillight for an electric vehicle, characterized by: The application relates to a tail lamp shell (1) fixedly arranged on a tail support of a motorcycle or an electric vehicle, a PCB board (2) arranged in the tail lamp shell (1), a radar chip (3) arranged on the PCB board (2), the radar chip (3) realizes real-time detection of a relative horizontal distance M and a relative straight distance N of an object behind the tail lamp shell (1) by emitting millimeter waves to the rear, an MCU chip (4) arranged on the PCB board (2), the MCU chip (4) is electrically connected with external audible and light alarm elements, the MCU chip (4) receives measurement data of the radar chip (3) at two continuous instants t1 and t2 and performs operation according to an internal program. When the relative horizontal distance M is greater than 0.75 meters and a calculation value of N2 / [ (N2-N1) / (t2-t1) ] is less than a set value T1 in the MCU chip (4), the MCU chip (4) controls the audible and light alarm elements to make an overtaking early warning response. When the relative horizontal distance M is less than 0.75 meters and the calculation value of N2 / [ (N2-N1) / (t2-t1) ] is less than a set value T2 in the MCU chip (4), the MCU chip (4) controls the audible and light alarm elements to make a following early warning response.

2. The active pre-warning radar tail light for electric vehicles as claimed in claim 1 wherein: A Bluetooth IC (5) is arranged on the PCB board (2) and is used for realizing Bluetooth connection with a vehicle owner.

3. The active warning radar taillight for electric vehicles according to claim 2, characterized in that: The radar chip (3) can detect the relative horizontal distance M of 4 meters.

4. The active pre-warning radar tail light for electric vehicles as claimed in claim 3 wherein: The audible and light alarm elements include a vehicle-mounted central control screen, a buzzer and a rearview mirror warning LED lamp.

5. The active pre-warning radar tail light for electric vehicles as claimed in claim 4 wherein: The MCU chip (4) is electrically connected with a steering lamp on the vehicle through a signal feedback circuit to identify whether the steering lamp on the vehicle is in an open state.

6. The active pre-warning radar tail light for electric vehicles as claimed in claim 5 wherein: When it is identified that the steering lamp on the vehicle is in the open state, the MCU chip (4) makes the set value T1 become 1.5 times of an original set value.

7. The active pre-warning radar tail light for electric vehicles as claimed in claim 6 wherein: When the overtaking early warning response occurs, the vehicle-mounted central control screen and the rearview mirror warning LED lamp controlled by the MCU chip (4) are in a constant light state; when the following early warning response occurs, the vehicle-mounted central control screen and the rearview mirror warning LED lamp controlled by the MCU chip (4) are in a flickering state, and the buzzer generates an alarm frequency of 80 times per minute.

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