CN117489233A

CN117489233A - Vehicle with a vehicle body having a vehicle body support

Info

Publication number: CN117489233A
Application number: CN202210883957.XA
Authority: CN
Inventors: 程自云; 梁俊磊; 曹为斯; 曾帅; 苏凯
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2024-02-02

Abstract

The invention discloses a vehicle, which comprises a vehicle body, a UWB sensor, a vehicle body controller and a vehicle executing device, wherein the vehicle body is provided with a part to be detected, and the part to be detected is used for providing a detection space; the UWB sensor is arranged on the boundary of the detection space of the part to be detected and is used for transmitting electromagnetic wave signals to the detection space so as to measure rainfall value; the vehicle body controller is connected with the UWB sensor and is used for sending out a control signal according to the rainfall value; and the vehicle execution device is connected with the vehicle body controller and is used for executing preset control actions on the vehicle body according to the control signals. According to the vehicle disclosed by the invention, the real-time rainfall detection is realized by adopting the UWB sensor, the rainfall detection precision and stability are high, the vehicle body is controlled to execute actions by combining the rainfall detection with the vehicle body state, and the application of the rainfall detection in vehicle control is enriched.

Description

Vehicle with a vehicle body having a vehicle body support

Technical Field

The invention relates to the field of vehicles, in particular to a vehicle.

Background

In related schemes of rainfall detection, generally adopted rainfall detection devices include, for example, a capacitive type rainfall sensor, a resistive type rainfall sensor, an infrared ray rainfall sensor, a piezoelectric vibrator rainfall sensor or a Charge-coupled Device (CCD) rainfall sensor, and such a sensor for detecting rainfall has defects in accuracy and reliability of real-time rainfall detection. In addition, the control application of the rain amount detection on the vehicle is relatively single.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a vehicle that can accurately and reliably detect real-time rainfall, and that can enrich the application of rainfall detection in vehicle control.

In order to achieve the above object, a vehicle according to an embodiment of the present invention includes: the device comprises a vehicle body, a detection device and a control device, wherein the vehicle body is provided with a part to be detected, and the part to be detected is used for providing a detection space; a UWB (Ultra Wide Band) sensor mounted on the boundary of the detection space of the part to be measured for transmitting electromagnetic wave signals to the detection space to measure rainfall values; the vehicle body controller is connected with the UWB sensor and is used for sending out a control signal according to the rainfall value; and the vehicle execution device is connected with the vehicle body controller and used for controlling the vehicle body to execute preset control actions according to the control signals.

According to the vehicle provided by the embodiment of the invention, the rainfall is detected by adopting the UWB sensor, the UWB sensor emits electromagnetic waves, the environment is less influenced, and the anti-interference performance is strong, so that the detected real-time rainfall is more accurate and stable, the rainfall detection is combined with the vehicle body control, the vehicle body is controlled to execute the preset control action according to the rainfall, and the application of the rainfall detection in the vehicle control is enriched.

The embodiments of the present invention also disclose some additional technical features, as follows:

in some embodiments, the part to be tested is a vehicle window, and the vehicle execution device includes: the car window driving device is connected with the car body controller and used for controlling the opening or closing of the car window according to the control signal; wherein the vehicle window comprises at least one of a side window and a sunroof.

In some embodiments, the UWB sensor comprises: a UWB signal transmitter for transmitting electromagnetic wave signals to the detection space; the UWB signal receiver and the UWB signal transmitter are oppositely arranged according to the detection space, and the UWB signal receiver is used for receiving electromagnetic wave signals propagated in the detection space; the control module is connected with the UWB signal transmitter, the UWB signal receiver and the vehicle body controller and is used for obtaining rainfall value according to the flight time of the received electromagnetic wave signals.

In some embodiments, the UWB signal transmitter and the UWB signal receiver are disposed opposite to each other at a predetermined distance on top of the vehicle body.

In some embodiments, the control module is coupled to the UWB signal transmitter through a first serial peripheral interface and the control module is coupled to the UWB signal receiver through a second serial peripheral interface.

In some embodiments, the control module is connected to the body controller via a CAN bus, and the body controller is connected to the vehicle implement via a first I2C bus or a first LIN bus.

In some embodiments, the vehicle execution apparatus further comprises: wiper and wiper drive device; the vehicle body controller is also connected with the wiper driving device and is also used for controlling the action speed of the wiper according to the control signal when the vehicle is in a running state.

In some embodiments, the body controller is coupled to the wiper drive via a second I2C bus or a second LIN bus.

In some embodiments, the vehicle execution apparatus further comprises: vehicle-mounted multimedia; the central control machine is connected with the vehicle body controller and used for controlling the vehicle-mounted multimedia to carry out speed limiting prompt when the rainfall value reaches a speed limiting rainfall threshold.

In some embodiments, the vehicle includes one or more of the UWB sensors.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic illustration of a vehicle according to one embodiment of the invention;

FIG. 2 is a block diagram of a UWB sensor according to one embodiment of the invention;

FIG. 3 is a block diagram of a system for rain detection in combination with vehicle body state control according to one embodiment of the invention;

FIG. 4 is a block diagram of a system for rain detection in combination with vehicle body state control according to another embodiment of the present invention;

reference numerals:

a vehicle 100;

the vehicle body 10, the UWB sensor 20, the vehicle body controller 30, the vehicle window driving device 40, the wiper driving device 50, the central control unit 60 and the Bluetooth module 70;

a vehicle window 11, a UWB signal transmitter 21, a UWB signal receiver 22 and a control module 23.

Detailed Description

Embodiments of the present invention will be described in detail below, by way of example with reference to the accompanying drawings.

In the vehicle provided by the embodiment of the invention, a more accurate rainfall detection device is adopted, the rainfall detection is combined with the vehicle body state control, and the application of the rainfall detection in the vehicle control is enriched. A vehicle according to an embodiment of the present invention is described below with reference to fig. 1 to 4.

Fig. 1 is a plan view of a vehicle according to an embodiment of the present invention, and as shown in fig. 1, a vehicle 100 of an embodiment of the present invention includes a vehicle body 10, a UWB sensor 20, a vehicle body controller 30, and a vehicle execution device (not shown in the drawings). Of course, the vehicle 100 also includes other basic structures and systems, which are not specifically recited herein.

The vehicle body 10 has a member to be measured such as a window 11, and the window 11 may be at least one of a sunroof and a side window in the embodiment. The part to be tested is used for providing a detection space, and the detection space can be a space for determining whether rainfall exists.

The UWB sensor 20 is mounted to a boundary of a detection space of a part to be measured, for example, on an edge of a window for emitting an electromagnetic wave signal to the detection space to measure a rainfall value.

Specifically, the UWB sensor 20 adopts UWB technology, and applies the principle that the propagation time of the electromagnetic wave emitted by the UWB sensor 20 in different media is different, so that the propagation time of the electromagnetic wave in different rainfall values can be correspondingly associated with the rainfall values, and thus the UWB sensor 20 can automatically detect the moisture content in the air based on the flight time of the electromagnetic wave, namely, the rainfall value is worth detecting.

In addition, UWB detection technology is not affected by light environment, so that UWB sensor 20 is used to detect rainfall, accuracy and stability are high, and in addition, as vehicle-mounted intelligentization is developed, UWB is increasingly used in vehicles, such as welcome and high-precision positioning, so that UWB is used to detect rainfall without adding additional hardware, and cost is low.

The vehicle body controller 30 is connected with the UWB sensor 20, and is configured to acquire a rainfall value detected by the UWB sensor 20, and send a control signal according to the rainfall value. The vehicle execution device is connected to the vehicle body controller 30, and is used for executing preset control actions on the vehicle body according to control signals, such as controlling the opening or closing of windows, adjusting the action speed of a wiper, controlling relevant information of vehicle-mounted multimedia playing and the like.

According to the vehicle 100 provided by the embodiment of the invention, the rainfall is detected by adopting the UWB sensor, the UWB sensor emits electromagnetic waves, the environment is less influenced, and the anti-interference performance is strong, so that the detected real-time rainfall is more accurate and stable, the rainfall detection is combined with the vehicle body control, the vehicle body is controlled to execute the preset control action according to the rainfall, and the application of the rainfall detection in the vehicle control is enriched.

In some embodiments, the part to be tested may be a vehicle window, including at least one of a vehicle side window and a sunroof. The vehicle execution device comprises a vehicle window driving device, wherein the vehicle window driving control device is connected with the vehicle body controller 30 and is used for controlling the opening or closing of the vehicle window according to a control signal sent by the vehicle body controller 30 according to the rainfall value.

For example, when the vehicle body controller 30 determines that the rainfall value is smaller than the Yu Guanchuang rainfall threshold, a control signal that the window does not need to be closed is sent, or when the window is in an open state, the vehicle body controller 30 with smaller rainfall does not respond, and the window driving device controls the window to be in the open state. And sending out a window closing control signal when determining that the rainfall value reaches the window closing rainfall threshold. The window closing rainfall threshold value can be judged according to whether the rainfall influences the property safety in the car owner. A window driving device, such as a motor or a driving mechanism, etc., for controlling the closing of the window 11 in an open state in accordance with a window closing control signal is connected to the vehicle body controller 30. Therefore, the window opening can be closed in time, rainfall, particularly heavy rain, is prevented from entering the vehicle, and economic loss of a user caused by the fact that the user does not close the window to rainfall is reduced.

Specifically, when the main driver leaves the vehicle, the vehicle body controller detects that the window and the skylight are closed, the UWB sensor 20 is controlled to enter a dormant state, when the BCM controller detects that the window and the skylight are not closed, the UWB sensor 20 starts to work, when the water content in the air is detected to be increased, for example, a Yu Guanchuang rainfall threshold value is large, the UWB sensor 20 sends an instruction for closing the window and the skylight to the BCM controller through the CAN, and the BCM controller immediately controls the window driving device to close the window and the skylight, and meanwhile, the UWB sensor 20 enters the dormant state. When the UWB sensor 20 is in a working state in the driving process of a main driver, and when the UWB sensor 20 detects that the water content in the air increases in rainy days, if the window and the skylight are not closed, the UWB sensor 20 sends a command for closing the window and the skylight to the BCM controller through the CAN, and the BCM controller CAN control the window driving device to close the window and the skylight immediately.

According to the vehicle 100 of the embodiment of the invention, the rainfall is detected by adopting the UWB sensor 20, the detected real-time rainfall value is more accurate and stable, the rainfall value detected by the UWB sensor 20 is acquired by the vehicle body controller 30, and when the rainfall value is larger than the Yu Guanchuang rainfall threshold, the vehicle body controller 30 controls the opened vehicle window to be closed, so that rainfall, particularly heavy rain, can be prevented from entering the vehicle, and economic loss caused to a user due to the fact that the vehicle window is not closed.

In some embodiments, as shown in fig. 2, UWB sensor 20 includes UWB signal transmitter 21, UWB signal receiver 22, and control module 23. The UWB signal transmitter 21 is for transmitting electromagnetic wave signals to the detection space; the UWB signal receiver 22 is disposed opposite to the UWB signal transmitter 21 according to the detection space, for example, disposed in front and rear of the sunroof or disposed at left and right sides of the sunroof or disposed at the roof near the side window to effectively detect the rainfall of the detection space, and the UWB signal receiver 22 is for receiving the electromagnetic wave signal propagated in the detection space; the control module 23 is connected to the UWB signal transmitter 21, the UWB signal receiver 22 and the vehicle body controller 30, for obtaining a rainfall value according to the flight time of the received electromagnetic wave signal.

In an embodiment, one or more UWB sensors may be disposed on the vehicle 100, and the plurality of UWB sensors may be disposed at different positions to obtain a larger space of rain detection or to obtain a more accurate rain detection.

Specifically, based on the principle that the electromagnetic wave has different propagation speeds in different media, the vehicle 100 according to the embodiment of the present invention uses the UWB sensor as a new usage mode, and the UWB signal transmitter 21 and the UWB signal receiver 22 are placed on two sides of the object to be detected, where the media directly affect the detection data of the UWB sensor 20, or the data detected by the UWB sensor 20 is affected by the media through which the electromagnetic wave passes. The electromagnetic waves released by the UWB sensor 20 pass through air and water, and the ratio of the air and water in the electromagnetic wave motion path of the UWB sensor 20 directly affects the measurement data of the UWB sensor 20. The propagation velocity of electromagnetic waves in water is smaller than that in air. Wherein the duty ratio of water on the propagation path of electromagnetic waves is in a linear relationship with the data detected by the UWB sensor 20. The speed of the electromagnetic wave passing through the detection space is far greater than the speed of the rainwater passing through the detection space, and the rainwater can be considered to be stationary relative to the position of the detection space during the time that the electromagnetic wave shuttles back and forth through the detection space. At this time, the UWB sensor 20 can measure the ratio θ of the volume of water to the volume of the detection space. I.e. the water duty cycle in the detection space. The water ratio in a certain space can be used as an index for measuring precipitation. θ can be used as an index for measuring precipitation, and when the value of the precipitation index is large, the precipitation index represents that the content of rainwater in the air is high, and the UWB sensor 20 can measure the index in real time. As shown in fig. 3, the UWB signal transmitter 21 transmits electromagnetic waves to the UWB signal receiver 22, and the UWB signal receiver 22 detects the current amount of rain through the processing operation of the control module 23 based on the time of flight of the received electromagnetic waves. The vehicle body controller 30 judges whether the window or the skylight needs to be closed according to the current rainfall, when the rainfall is detected to be larger than the threshold set by the UWB sensor 20, namely, the window closing rainfall threshold, the threshold is judged according to whether the rainfall affects the property safety of a vehicle owner, the control module 23 of the UWB sensor 20 sends an instruction to the BCM end through the CAN bus, and the BCM controls the window driving device 40 as overall scheduling, so that the opening and closing states of the window or the skylight are controlled.

In the embodiment of the present invention, the UWB signal transmitter 21 and the UWB signal receiver 22 are disposed opposite to each other at a predetermined distance on the top of the vehicle body 10, and may be disposed near the front or rear of the vehicle, without limitation. Wherein the distance is preset to achieve accurate transceiving setting of electromagnetic waves, the UWB signal transmitter 21 and the UWB signal receiver 22 cannot be too far apart. The UWB signal transmitter 21 and the UWB signal receiver 22 are provided on the top of the vehicle body 10, which can more effectively detect rainfall, and reduce interference and improve detection accuracy compared to other positions such as the vehicle side.

In some embodiments, as shown in fig. 2, the control module 23 is connected to the UWB signal transmitter 21 through a first serial peripheral interface (SPI, serial Peripheral Interface), and the control module 23 is connected to the UWB signal receiver 22 through a second serial peripheral interface. Thus, the start-stop control of the UWB signal transmitter 21 and the UWB signal receiver 22 and the acquisition of electromagnetic wave propagation time, i.e., flight time, can be realized to obtain corresponding rainfall values.

In an embodiment, as shown in fig. 3 and 4, the control module 23 is connected to the vehicle body controller 30 via a CAN bus, and the vehicle body controller 30 is connected to a vehicle execution device, such as a window drive device 40, via a first I2C bus or a first LIN bus, so that communication between the UWB sensor 20 and the vehicle body controller 30 and communication between the vehicle body controller 30 and the window are realized.

In some embodiments, as shown in fig. 3 or 4, the vehicle performing device further includes a wiper and wiper drive 50; the vehicle body controller 30 is further connected to the wiper drive device 50, and is further configured to control a speed of the wiper action according to a control signal sent by the vehicle body controller 30 based on the rainfall value when the vehicle is in a driving state. In an embodiment, the body controller 30 may be connected to the wiper drive 50 via a second I2C bus or a second LIN bus.

Specifically, as shown in fig. 3, the UWB signal transmitter 21 and the UWB signal receiver 22 and the control module 23 constitute a rainfall detection device based on UWB technology, and the BCM serves as a vehicle body controller, and schedules the window driving device 40 and the wiper driving device 50, that is, ECU states, thereby controlling the opening and closing states of the windows and the sunroofs and the wiper operation speed. For example, when the vehicle is in flameout and the window and the skylight are in a closed state, the UWB sensor 20 CAN be powered off or in a dormant state, and when the window and the skylight are in an open state, the UWB sensor 20 is in a working state for detecting rainfall, and the message information is transmitted to the BCM through the CAN bus according to the rainfall, so that the state of the window and the skylight is automatically controlled. In rainy days, the BCM can also automatically adjust the action speed of the wiper according to the rainfall condition detected by the UWB sensor 20, so as to provide guarantee for safe driving of a host.

In some examples, as shown in fig. 4, the vehicle execution device further includes a vehicle-mounted multimedia such as a multimedia screen, a voice device, an external power amplifier, and the like, and a central control unit 60, where the central control unit 60 is connected to the vehicle body controller 30, and is used to control the vehicle-mounted multimedia to perform speed-limiting prompt when the rainfall value reaches a speed-limiting rainfall threshold, so as to improve the driving safety in rainy days. As shown in fig. 4, the central control unit 60 communicates with the vehicle body controller 30 through a CAN bus, and the central control unit 60 is connected with an external power amplifier through an audio bus A2B.

In some embodiments, as shown in fig. 3 or 4, the vehicle 100 further includes a bluetooth module 70 (BLE), the bluetooth module 70 being configured to receive user identification information; the control module 23 is further connected to the bluetooth module 70, and is configured to identify a user identity according to the user identity identification information, so as to implement locking and unlocking of the vehicle, and improve security.

The application scenario of the embodiment of the present invention is described in the following embodiments.

The first scene is applicable to when the main driving leaves the car, because the skylight and the car window are not closed for some reason, the UWB sensor 20 CAN work by oneself, when the moisture content in the detected air becomes high, when exceeding the threshold value of the window closing rainfall, the UWB sensor 20 CAN send the rainfall information to the BCM end through the CAN bus, the BCM totally dispatches the ECU of the car window driving device to close the skylight and the car window, and the rainwater is prevented from entering the car, thereby playing the role of protecting the interior of the car from being wetted. Therefore, the economic loss of the vehicle owner caused by the fact that the vehicle window is not closed can be avoided.

Scene II: in the driving process of the vehicle, due to heavy rain caused by weather, the UWB sensor 20 detects that the rainfall is large, message information is sent to the BCM end through the CAN bus, the BCM CAN automatically close the skylight and the window and adjust the action speed of the wiper, the action speed of the wiper CAN be adjusted according to the current condition of the vehicle speed, when the rainfall is large, the vehicle speed is low, and when the vehicle speed is high, the action speed of the wiper CAN be accelerated. Further, when the rainfall is large and the vehicle speed is high, the main driver is reminded of safe driving in a voice broadcasting mode or a mode of turning on a danger alarm lamp. Based on the detection of the rainfall by the UWB sensor 20, the main driver is not required to manually adjust the action speed of the wiper, the main driver is assisted to safely drive in the stormy weather, and the guarantee is provided for the main driver to travel safely.

In general, according to the vehicle 100 of the embodiment of the invention, the UWB sensor 20 is adopted to detect the rainfall, so that the rainfall is not influenced by light and external environment, the detected real-time rainfall value is more accurate and stable, the rainfall detection is combined with the window control, the vehicle body controller 30 acquires the rainfall value detected by the UWB sensor 20, and when the rainfall value is larger than the Yu Guanchuang rainfall threshold, the vehicle body controller 30 controls the opened window to be closed, so that rainfall, particularly heavy rain, can be prevented from entering the vehicle, and economic loss caused to a user due to the fact that the window is not closed. In addition, the UWB sensor 20 is used to detect the amount of rain and control the wiper, and the speed of the wiper is adjusted according to the value of the amount of rain, so that the safety of driving in rainy days can be improved.

It should be noted that in the description of the present specification, descriptions of terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vehicle, characterized by comprising:

the device comprises a vehicle body, a detection device and a control device, wherein the vehicle body is provided with a part to be detected, and the part to be detected is used for providing a detection space;

the UWB sensor is arranged on the boundary of the detection space of the part to be detected and is used for transmitting electromagnetic wave signals to the detection space so as to measure rainfall value;

the vehicle body controller is connected with the UWB sensor and is used for sending out a control signal according to the rainfall value;

and the vehicle execution device is connected with the vehicle body controller and is used for executing preset control actions on the vehicle body according to the control signals.

2. The vehicle according to claim 1, wherein the part to be measured is a window, and the vehicle execution apparatus includes: the car window driving device is connected with the car body controller and used for controlling the opening or closing of the car window according to the control signal; wherein the vehicle window comprises at least one of a side window and a sunroof.

3. The vehicle of claim 1, wherein the UWB sensor comprises:

a UWB signal transmitter for transmitting electromagnetic wave signals to the detection space;

the UWB signal receiver and the UWB signal transmitter are oppositely arranged according to the detection space, and the UWB signal receiver is used for receiving electromagnetic wave signals propagated in the detection space;

the control module is connected with the UWB signal transmitter, the UWB signal receiver and the vehicle body controller and is used for obtaining rainfall value according to the flight time of the received electromagnetic wave signals.

4. A vehicle according to claim 3, wherein the UWB signal transmitter and the UWB signal receiver are disposed relatively at a top of the vehicle body with a predetermined distance.

5. A vehicle according to claim 3, wherein,

the control module is connected with the UWB signal transmitter through a first serial peripheral interface, and is connected with the UWB signal receiver through a second serial peripheral interface.

6. The vehicle of claim 5, wherein the vehicle is further characterized by,

the control module is connected with the vehicle body controller through a CAN bus, and the vehicle body controller is connected with the vehicle execution device through a first I2C bus or a first LIN bus.

7. The vehicle according to claim 1, characterized in that the vehicle execution apparatus further comprises:

wiper and wiper drive device;

the vehicle body controller is also connected with the wiper driving device and is also used for controlling the action speed of the wiper according to the control signal when the vehicle is in a running state.

8. The vehicle of claim 7, wherein the body controller is coupled to the wiper drive via a second I2C bus or a second LIN bus.

9. The vehicle according to claim 1, characterized in that the vehicle execution apparatus further comprises:

vehicle-mounted multimedia;

the central control machine is connected with the vehicle body controller and used for controlling the vehicle-mounted multimedia to carry out speed limiting prompt when the rainfall value reaches a speed limiting rainfall threshold.

10. The vehicle of any of claims 1-9, characterized by comprising one or more of said UWB sensors.