CN114435158B

CN114435158B - Living body detection device and control method of vehicle wireless charger

Info

Publication number: CN114435158B
Application number: CN202210149132.5A
Authority: CN
Inventors: 梁士福; 胡越
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2023-11-21
Anticipated expiration: 2042-02-18
Also published as: CN114435158A

Abstract

The invention discloses a living body detection device and a control method of a wireless charger of a vehicle, wherein the wireless charger is used for wirelessly charging an electric automobile and is characterized by comprising the following steps: a capacitive detection sensor, an alarm device and a controller; the wireless charger comprises a wireless charger body; the capacitive detection sensor is arranged around the wireless charger body; the capacitive detection sensor is used for detecting a living body entering the area where the wireless charger body is located from the periphery of the wireless charger body and generating a detection signal; the controller is respectively and electrically connected with the capacitive detection sensor and the alarm device; the controller is used for obtaining detection signals when the wireless charger charges a vehicle to be charged, controlling the alarm device to alarm according to the detection signals, and timely controlling the alarm device to alarm when the area where the wireless charger is located is determined to enter a living body, and timely reminding a user and warning and driving away animals.

Description

Living body detection device and control method of vehicle wireless charger

Technical Field

The embodiment of the invention relates to the technical field of wireless charging of electric automobiles, in particular to a living body detection device and a control method of a wireless charger of a vehicle.

Background

The wireless charging system of the existing electric automobile is in the charging process, namely in the power transmission process, the wireless charging device can generate heat, living animals such as cats and dogs are easy to attract to heat on the wireless charging device which is close to the heat, or people stretch hands or feet and other limbs to the position close to the wireless charging device under the unknowing condition, if the human body or the animal enters a living body protection area of the wireless charging area and stays for too long, the probability that nerves or tissues of the human body or the animal are damaged is increased.

The living body detection device in the prior art cannot play a sufficient warning role, particularly for animals, the warning and the displacement of small animals cannot be fully considered, and the problem that the small animals frequently come in and go out of a wireless charging protection area, so that a charging system is stopped due to frequent alarming, and the charging persistence and the customer experience of the system are affected is difficult to avoid.

Disclosure of Invention

The invention provides a living body detection device and a control method of a wireless charger of a vehicle, which are used for effectively detecting living bodies in an area where the wireless charger is located and effectively warning and driving away the living bodies in the area where the wireless charger is located.

In a first aspect, an embodiment of the present invention provides a living body detection apparatus of a wireless charger for a vehicle, the wireless charger being configured to wirelessly charge an electric vehicle, the living body detection apparatus comprising: a capacitive detection sensor, an alarm device and a controller;

the wireless charger comprises a wireless charger body; the capacitive detection sensor is arranged around the wireless charger body;

the capacitive detection sensor is used for detecting a living body entering the area where the wireless charger body is located from the periphery of the wireless charger body and generating a detection signal;

the controller is respectively and electrically connected with the capacitive detection sensor and the alarm device; the controller is used for acquiring the detection signal when the wireless charger charges the vehicle to be charged, and controlling the alarm device to alarm according to the detection signal.

Optionally, the capacitive detection sensor includes at least two sets of comb capacitors, each set of comb capacitors includes at least one comb capacitor, and the comb capacitors of the same set are connected in series and/or in parallel;

the controller is used for obtaining detection signals fed back by the comb capacitors in a one-to-one correspondence mode, and controlling the alarm state of the alarm device according to the detection signals fed back by the comb capacitors in each group.

Optionally, the at least two sets of the comb capacitors include a first set of comb capacitors and a second set of comb capacitors; orthographic projections of the first comb-type capacitor group and the second comb-type capacitor group on the plane of the wireless charger body are L-shaped, and the first comb-type capacitor group and the second comb-type capacitor group encircle the wireless charger body in an end-to-end adjacent mode.

Optionally, the at least two sets of comb capacitors include a first comb capacitor set, a second comb capacitor set, a third comb capacitor set, and a fourth comb capacitor set, and the first comb capacitor set, the second comb capacitor set, the third comb capacitor set, and the fourth comb capacitor set are sequentially disposed around the wireless charger body;

the first comb-type capacitor group and the third comb-type capacitor group are respectively located at two opposite sides of the wireless charger body, and the second comb-type capacitor group and the fourth comb-type capacitor group are respectively located at two opposite sides of the wireless charger body.

Optionally, the wireless charger further comprises a housing, and the housing is at least arranged around the wireless charger body;

the capacitive detection sensor is attached to one side of the shell, which is close to the wireless charger body.

Optionally, the alarm device comprises at least two sonic radars surrounding the wireless charger;

the controller is used for controlling the emitted sound wave signals of the sound wave radars in a one-to-one correspondence mode according to the detection signals fed back by the comb-type capacitors.

Optionally, the at least two sonic radars include a first sonic radar, a second sonic radar, a third sonic radar, a fourth sonic radar, a fifth sonic radar, a sixth sonic radar, a seventh sonic radar, and an eighth sonic radar that surround the wireless charger;

the first acoustic radar, the second acoustic radar and the third acoustic radar are arranged along a first direction, the third acoustic radar, the fourth acoustic radar and the fifth acoustic radar are arranged along a second direction, the fifth acoustic radar, the sixth acoustic radar and the seventh acoustic radar are arranged along the first direction, and the seventh acoustic radar, the eighth acoustic radar and the first acoustic radar are arranged along the second direction; wherein the first direction intersects the second direction.

In a second aspect, an embodiment of the present invention further provides a method for controlling living body detection of a wireless charger for a vehicle, which is performed by the living body detection device of the wireless charging system, including:

the capacitive detection sensor detects living bodies entering the area where the wireless charger body is located from the periphery of the wireless charger body and generates detection signals;

the controller acquires the detection signal and controls the alarm device to alarm according to the detection signal.

Optionally, the capacitive detection sensor comprises at least two groups of comb capacitors, each group of comb capacitors comprises at least one comb capacitor, and the comb capacitors of the same group are connected in series and/or in parallel;

the alarm device comprises at least two sonic radars surrounding the wireless charger body, wherein the at least two sonic radars comprise a first sonic radar, a second sonic radar, a third sonic radar, a fourth sonic radar, a fifth sonic radar, a sixth sonic radar, a seventh sonic radar and an eighth sonic radar which are arranged along a first direction, the third sonic radar, the fourth sonic radar and the fifth sonic radar are arranged along a second direction, the fifth sonic radar, the sixth sonic radar and the seventh sonic radar are arranged along the first direction, and the seventh sonic radar, the eighth sonic radar and the first sonic radar are arranged along the second direction; wherein the first direction intersects the second direction;

the controller obtains the detection signal and controls the alarm device to alarm according to the detection signal, and the method comprises the following steps:

acquiring detection signals fed back by the comb-type capacitors in each group in a one-to-one correspondence manner;

judging whether a living body enters the area where the wireless charger body is located according to the detection signals fed back by the comb-shaped capacitors;

if yes, determining the entering direction of the living body according to the detection signals fed back by the comb-type capacitors;

and controlling at least one acoustic radar on the side opposite to the direction of the living body to transmit acoustic signals according to the direction of the living body.

Optionally, after the controller obtains the detection signal and controls the alarm device to alarm according to the detection signal, the method further includes:

controlling the wireless charger to be in a non-working state;

when the wireless charger is in a non-working state, acquiring the detection signal in real time;

judging whether a living body exists in the area where the wireless charger body is located according to the detection signal;

if not, restarting the wireless charger to enable the wireless charger to be in a working state.

According to the living body detection device of the vehicle wireless charger, the capacitive detection sensor is arranged around the wireless charger, living bodies entering the area where the wireless charger body is located from the periphery of the wireless charger body can be detected in real time, detection signals are provided for the controller in real time, when the wireless charger charges a vehicle to be charged, the controller can judge whether the area where the wireless charger body is located enters the living body according to the detection signals in real time, so that when the area where the wireless charger is located is determined to have living body entering, the alarm device can be controlled to alarm in time, and a user can be reminded in time, and the vehicle to be charged and driven away can be warned.

Drawings

Fig. 1 is a schematic structural view of a living body detection device of a wireless charger for a vehicle according to an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of a living body detection device of a wireless charger for a vehicle according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a living body detection device of another vehicle wireless charger according to an embodiment of the present invention;

fig. 4 is a schematic circuit diagram of a capacitive detection sensor according to an embodiment of the present invention;

FIG. 5 is a schematic circuit diagram of another capacitive sensor according to an embodiment of the present invention;

FIG. 6 is a schematic circuit diagram of a capacitive detection sensor according to another embodiment of the present invention;

fig. 7 is a schematic structural view of a living body detection device of a further vehicle wireless charger according to the embodiment of the present invention;

fig. 8 is a perspective view of a wireless charger according to an embodiment of the present invention;

FIG. 9 is a cross-sectional view taken along the direction AA' of FIG. 8;

FIG. 10 is a flowchart of a method for controlling living body detection of a wireless charger for a vehicle according to an embodiment of the present invention;

FIG. 11 is a flowchart of a method for controlling living body detection of a wireless charger for a vehicle according to an embodiment of the present invention;

fig. 12 is a flowchart of a living body control method of a wireless charger for a vehicle according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

The embodiment of the invention provides a living body detection device of a vehicle wireless charger, wherein the wireless charger is used for wirelessly charging an electric automobile, fig. 1 is a schematic structural diagram of the living body detection device of the vehicle wireless charger, and fig. 2 is a schematic circuit structural diagram of the living body detection device of the vehicle wireless charger, and the living body detection device of the vehicle wireless charger, combined with fig. 1 and 2, comprises a capacitive detection sensor 10, an alarm device 20 and a controller 30; the wireless charger 40 includes a wireless charger body 41; the capacitive detection sensor 10 is disposed around the wireless charger body 41; the capacitive detection sensor 10 is used for detecting a living body entering the area where the wireless charger body 41 is located from the periphery of the wireless charger body 41 and generating a detection signal; the controller 30 is electrically connected with the capacitive detection sensor 10 and the alarm device 20 respectively; the controller 30 is configured to obtain a detection signal when the wireless charger 40 charges a vehicle to be charged, and control the alarm device 20 to alarm according to the detection signal.

Specifically, the wireless charging system of the vehicle may include a power receiving device at a vehicle-mounted end and a power output device at a ground end, where the power output device at the ground end is the wireless charger 40, and when the electric vehicle needs to be charged, the power receiving device at the vehicle-mounted end is moved above the wireless charger 40, so that the power receiving device at the vehicle-mounted end is opposite to the wireless charger 40, and the wireless charger 40 can output power to the power receiving device at the vehicle-mounted end to charge the electric vehicle. The capacitive detection sensor 10 may be disposed close to and around the wireless charger 40, so that when a living body enters the area of the wireless charger 40 from the periphery of the wireless charger 40, the capacitive impedance of the capacitive detection sensor 10 may be changed, so that the capacitive impedance of the capacitive detection sensor 10 may be provided as a detection signal to the controller 30 in real time, and the wireless charger 40 may include a digital signal processor DSP.

Optionally, fig. 3 is a schematic structural diagram of another living body detection device of a vehicle wireless charger according to an embodiment of the present invention, fig. 4 is a schematic circuit structural diagram of a capacitive detection sensor according to an embodiment of the present invention, and as shown in fig. 3 and 4, the capacitive detection sensor 10 includes at least two sets of comb capacitors (a first comb capacitor set 11 and a second comb capacitor set 12), each set of comb capacitors includes at least one comb capacitor, and the same set of comb capacitors are connected in series, and the controller 30 is configured to obtain detection signals fed back by the respective sets of comb capacitors in a one-to-one correspondence manner, and control an alarm state of the alarm device 20 according to the detection signals fed back by the respective sets of comb capacitors.

Specifically, the comb-type capacitor can be composed of a detection electrode PCB and a grounding electrode PCB, wherein the detection electrode PCB is in a comb-tooth shape design, so that stronger eddy current effect can not be formed in the detection electrode plate on the premise of not affecting the detection sensitivity of the capacitive sensor, the service life of the detection electrode is prolonged, and the problem that the inherent stray capacitance of the detection circuit generates larger temperature drift and affects the accuracy of living body measurement due to the temperature rise of the electrode plate caused by the eddy current effect can be avoided.

Each group of comb capacitors includes 4 comb capacitors, namely, a first comb capacitor C1, a second comb capacitor C2, a third comb capacitor C3 and a fourth comb capacitor C4, and the first comb capacitor C1, the second comb capacitor C2, the third comb capacitor C3 and the fourth comb capacitor C4 are sequentially arranged, where the first comb capacitor C1, the second comb capacitor C2, the third comb capacitor C3 and the fourth comb capacitor C4 are sequentially connected in series, that is, a second end of the first comb capacitor C1 is electrically connected with a first end of the second comb capacitor C2, a second end of the second comb capacitor C2 is electrically connected with a first end of the third comb capacitor C3, a second end of the third comb capacitor C3 is electrically connected with a first end of the fourth comb capacitor C4, at this time, the controller 30 may be correspondingly provided with each group of comb capacitors with a signal acquisition circuit (that is, the first signal acquisition circuit 31), and the first end of the first comb capacitor C1 and the fourth comb capacitor C4 are correspondingly provided with a first end of the first comb capacitor C2, and the second comb capacitor C2 are simultaneously capable of controlling signal acquisition capacity of being processed by the wireless charger 30.

Alternatively, as shown in the circuit structure schematic diagram of another capacitive detection sensor in fig. 5, the second end of the first comb capacitor C1 is electrically connected to the first end of the third comb capacitor C3, the second end of the second comb capacitor C2 is electrically connected to the first end of the fourth comb capacitor C4, and the controller 30 may include a plurality of acquisition circuits, for example, a first signal acquisition circuit 31 and a second signal acquisition circuit 32 corresponding to each group of comb capacitors, so that the first end of the first comb capacitor C1 and the second end of the third comb capacitor C3 may be electrically connected to the input end of the first signal acquisition circuit 31, and the first end of the second comb capacitor C2 and the second end of the fourth comb capacitor C4 may be electrically connected to the input end of the second signal acquisition circuit 32, i.e., for a group of comb capacitors, 2-channel detection signal acquisition may be implemented, and accuracy of living body detection may be improved.

As shown in fig. 6, the circuit structure of another capacitive detection sensor according to the embodiment of the present invention may be shown, where comb capacitors of the same group may be connected in parallel. Taking 4 comb capacitors as an example, the first end of the first comb capacitor C1 is electrically connected to the first end of the third comb capacitor C3, the second end of the first comb capacitor C1 is electrically connected to the second end of the third comb capacitor C3, the first end of the second comb capacitor C2 is electrically connected to the first end of the fourth comb capacitor C4, the second end of the second comb capacitor C2 is electrically connected to the second end of the fourth comb capacitor C4, and at this time, the controller 30 may include a first signal acquisition circuit 31 and a second signal acquisition circuit 32 corresponding to each group of comb capacitors, and may electrically connect the two ends of the first comb capacitor C1 or the two ends of the third comb capacitor C3 to the input end of the first signal acquisition circuit 31, and the two ends of the second comb capacitor C2 or the two ends of the fourth comb capacitor C4 are electrically connected to the input end of the second signal acquisition circuit 32, so as to realize living body detection.

It should be noted that, in the embodiment of the present invention, only 4 comb capacitors are exemplified as each set of comb capacitors, and the circuit structure of each set of comb capacitors is exemplified, it may be understood that, in order to achieve more accurate detection of a living body and detection of an entry direction of the living body, the number of comb capacitors in each set of comb capacitors may be set by itself, and the connection manner of each comb capacitor may be set by itself, for example, the same comb capacitor set may include a comb capacitor partially connected in series and a comb capacitor partially connected in parallel, which is not limited in particular.

Optionally, referring to fig. 3, the at least two sets of comb capacitors include a first set of comb capacitors 11 and a second set of comb capacitors 12; the orthographic projections of the first comb-type capacitor set 11 and the second comb-type capacitor set 12 in the direction of the plane of the wireless charger body 41 are L-shaped, and the first comb-type capacitor set 11 and the second comb-type capacitor set 12 adjacently encircle the wireless charger body 41 from head to tail.

Specifically, when the projection of the wireless charger body 41 on the ground is approximately rectangular, the orthographic projections of the first comb-type capacitor set 11 and the second comb-type capacitor set 12 on the plane where the wireless charger body 41 is located may be both L-shaped, so that the first comb-type capacitor set 11 can surround two adjacent sides of the four sides of the wireless charger 40, the second comb-type capacitor set 12 can surround two other adjacent sides of the four sides of the wireless charger 40, and thus the first comb-type capacitor set 11 and the second comb-type capacitor set 12 can surround the wireless charger body 41, at this time, the controller can determine whether two sides around the wireless charger body 41 have living bodies entering according to the detection signal provided by the first comb-type capacitor set 11, and determine whether the other two sides around the wireless charger body 41 have living bodies entering according to the detection signal provided by the second comb-type capacitor set 12, so as to realize omnibearing detection of the surroundings of the wireless charger body 41.

Optionally, fig. 7 is a schematic structural diagram of a living body detection device of a wireless charger for a vehicle according to an embodiment of the present invention, as shown in fig. 7, at least two sets of comb capacitors include a first comb capacitor set 11, a second comb capacitor set 12, a third comb capacitor set 13 and a fourth comb capacitor set 14, and the first comb capacitor set 11, the second comb capacitor set 12, the third comb capacitor set 13 and the fourth comb capacitor set 14 are sequentially disposed around a wireless charger body 41; the first comb capacitor set 11 and the third comb capacitor set 13 are respectively located at two opposite sides of the wireless charger body 41, and the second comb capacitor set 12 and the fourth comb capacitor set 14 are respectively located at two opposite sides of the wireless charger body 41.

Specifically, 4 sets of comb capacitors may be disposed around the wireless charger body 41, for example, when the projection of the wireless charger body 41 on the ground is approximately rectangular, the 4 sets of comb capacitors may be disposed parallel to and near four sides of the wireless charger body 41, i.e., the first comb capacitor set 11 and the third comb capacitor set 13 are respectively located at two opposite sides of the wireless charger body 41, the second comb capacitor set 12 and the fourth comb capacitor set 14 are respectively located at two opposite sides of the wireless charger body 41, so that the controller can acquire detection signals from the 4 sets of comb capacitors, and can perform more accurate living body detection for all four sides of the wireless charger body 41.

Optionally, fig. 8 is a perspective view schematically illustrating a three-dimensional structure of a wireless charger according to an embodiment of the present invention, and as shown in fig. 8, the wireless charger 40 further includes a housing 42, where the housing 42 is at least disposed around the wireless charger body 41; fig. 9 is a cross-sectional view along AA' of fig. 8, and as shown in fig. 9, the capacitive detection sensor 10 is attached to a side of the housing 42 near the wireless charger body 41.

Specifically, in order to protect the wireless charger body 41, a housing 42 may be disposed around the wireless charger body 41, and the upper housing 43 may form a closed structure with the housing 42 to completely cover the wireless charger body 41, and the housing 42 may serve as a supporting structure of the capacitive sensor 10, i.e. the capacitive sensor 10 may be attached to the inner side of the housing 42 (i.e. one side of the wireless charger body 41). The housing 42 may be configured as a slope structure inclined toward the wireless charger body 41, and compared with a structure in which the housing 42 is perpendicular to the ground, the housing 42 can avoid a sudden stop or a difficult driving when a vehicle rolls to the housing 42, and on the other hand, when the capacitive detection sensor 10 is attached to the inner side of the inclined housing 42, the distribution amount of the magnetic field of the capacitive detection sensor 10 on the ground is small, so that the capacitive detection sensor can be prevented from being triggered by a moving living body outside the living body detection area due to excessive sensitivity, thereby causing erroneous judgment and false alarm.

Optionally, referring to fig. 3, the alarm device 20 includes at least two sonic radars 21 surrounding a wireless charger 40; the controller 30 is configured to control the emitted acoustic wave signals of the acoustic wave radars 21 in a one-to-one correspondence based on the detection signals fed back by the comb capacitors of each group.

Specifically, at least two sonic radars 21 may be disposed around the housing 42 of the wireless charger 40, and each sonic radar 21 may be disposed in a buried manner, when the controller 30 determines that a living body enters the area of the wireless charger body 41 according to the detection signal, at least one sonic radar 21 may be controlled to emit a sonic wave, and when the living body entering the area of the wireless charger body 41 is an animal, the sonic wave emitted by the sonic radar 21 may play a role in warning and driving the animal, so as to drive the animal out of the area of the wireless charger body 41 as soon as possible. For example, the frequency of the sound wave can be specifically set according to the sensitivity of the small animal to the sound wave noise to be protected, and for the case that cats and dogs enter a charging place, which is common in practical application scenes, the frequency of the sound wave is preferably set to 60-6500 Hz.

Optionally, referring to fig. 7, the at least two sonic radars 21 include a first sonic radar 211, a second sonic radar 212, a third sonic radar 213, a fourth sonic radar 214, a fifth sonic radar 215, a sixth sonic radar 216, a seventh sonic radar 217, and an eighth sonic radar 218 that are wrapped around the wireless charger 40; the first acoustic radar 211, the second acoustic radar 212, and the third acoustic radar 213 are arranged in the first direction X, the third acoustic radar 213, the fourth acoustic radar 214, and the fifth acoustic radar 215 are arranged in the second direction Y, the fifth acoustic radar 215, the sixth acoustic radar 216, and the seventh acoustic radar 217 are arranged in the first direction X, and the seventh acoustic radar 217, the eighth acoustic radar 218, and the first acoustic radar 211 are arranged in the second direction Y; wherein the first direction X intersects the second direction Y.

Specifically, in order to effectively warn that the living body does not enter the area where the wireless charger body 40 is located, and effectively expel the living body when the living body enters the area where the wireless charger body 41 is located, eight sonic radars 21 may be disposed around the periphery of the wireless charger body 40, for example, each sonic radar may be disposed around the outer side of the housing 42, if the projection of the housing 42 on the ground is assumed to be substantially rectangular, and four sides of the housing 42 may be respectively a first side 421, a second side 422, a third side 423 and a fourth side 424 in a counterclockwise manner, then the first direction X may be parallel to the first side 421 and the third side 423, the second direction Y may be parallel to the second side 422 and the fourth side 424, then the first sonic radar 211, the second sonic radar 212 and the third sonic radar 213 may be parallel to the first direction X, the third sonic radar 213, the fourth sonic radar 214 and the fifth sonic radar 215 may be disposed in a position close to the second side 422, the fifth sonic radar 215, the sixth sonic radar 215 and the seventh sonic radar 213 may be disposed in a position close to the second side 421, the seventh sonic radar may be parallel to the fourth side 423, and the third sonic radar 213 may be disposed in a position close to the fourth side 423, and the third sonic radar may be parallel to the fourth side 423.

For example, when the wireless charger body 41 starts outputting power, the controller 30 may control the first acoustic radar 211, the second acoustic radar 212, the third acoustic radar 213, the fourth acoustic radar 214, the fifth acoustic radar 215, the sixth acoustic radar 216, the seventh acoustic radar 217, and the eighth acoustic radar 218 to sequentially emit acoustic waves at a first preset time, which may be 5s, in a clockwise order or a counterclockwise order; if it is detected that a living body enters the area where the wireless charger body 40 is located, one or more sonic radars may be controlled to emit sonic waves, for example, if the controller determines that a living body enters the area where the wireless charger body 41 is located according to the detection signals of the second side 422 and the third side 423, it may be determined that the entering direction of the living body is at a position close to the second side 422 and the third side 423, at this time, the first sonic radar 211, the second sonic radar 212 and the eighth sonic radar 218 may be controlled to simultaneously start emitting sonic waves for 2s (may be set by itself), and then the first sonic radar 211, the third sonic radar 213 and the seventh sonic radar 217 may be controlled to simultaneously start emitting sonic waves for 2s (may be set by itself), and this may be taken as a response period, and the circulation may be performed for 10s (may be set by itself) in total, so as to be able to drive away from the animal and return in the original way; if the living body is detected to enter the area where the wireless charger body 41 is located and does not leave after 10s, the first acoustic radar 211, the third acoustic radar 213, the fifth acoustic radar 215 and the seventh acoustic radar 217 can be controlled to simultaneously start transmitting sound waves for 2s, the second acoustic radar 212, the fourth acoustic radar 214, the sixth acoustic radar 216 and the eighth acoustic radar 218 are controlled to simultaneously start transmitting sound waves for 2s, the living body is taken as a response period, the cycle is carried out for 10s in total, if the living body still does not leave the area where the wireless charger body 41 is located after 20 s, the eight acoustic radars are controlled to simultaneously start transmitting sound waves until the living body is determined to leave, and then the mode of controlling the eight acoustic radars to sequentially start transmitting sound waves is returned. Through the control mode of the acoustic radar, the living body can be effectively driven off, and meanwhile, the minimum acoustic radar can be started as much as possible to achieve the driving purpose, so that the power consumption of the living body detection device of the wireless charger of the vehicle is effectively reduced.

In addition, the protection device 20 may further include a plurality of LED light bands 22 disposed around the wireless charger 40, where each LED light band 22 may be designed to be buried, each LED light band may be disposed parallel to and near a side of the housing, when the wireless charger body 41 is in a dormant state, the controller 30 may control each LED light band 22 to emit green light, and when the wireless charger body 41 outputs power and the controller 30 determines that no living body enters the area where the wireless charger body 41 is located, the controller 30 may control each LED light band to emit yellow light to alert surrounding people, and if it detects that a living body enters the area where the wireless charger body 41 is located in the output power of the wireless charger body 41, control each LED light band to emit red light and flash at a certain frequency to alert a user, where the flash frequency of each LED light band is preferably set between 17Hz and 21Hz, and human vision is sensitive to the flash frequency of the light. Therefore, the living body detection blind area of the wireless charging system can be reduced, the self-safety awareness of the user on the influence of wireless charging is improved through visual psychological implications before or after the human body enters the wireless charging living body protection area, and the residence time of the human body in the charging protection area is shortened, so that the living body protection capability of the wireless charging system of the electric automobile can be enhanced.

Based on the same conception, the embodiment of the invention provides a living body control method of a vehicle wireless charger, which can effectively detect whether a living body enters and effectively warn and drive away in an area where the vehicle wireless charger is positioned in the process of outputting power of the wireless charger.

Optionally, fig. 10 is a flowchart of a method for controlling living body detection of a wireless charger for a vehicle according to an embodiment of the present invention, as shown in fig. 10, where the method for controlling living body detection of a wireless charger for a vehicle includes:

s110, detecting a living body entering the area where the wireless charger body is located from the periphery of the wireless charger body by the capacitive detection sensor, and generating a detection signal.

And S120, the controller acquires a detection signal and controls the alarm device to alarm according to the detection signal.

According to the living body detection control method for the vehicle wireless charger, the capacitive detection sensor surrounding the periphery of the wireless charger is used for detecting living bodies entering the area where the wireless charger body is located from the periphery of the wireless charger body in real time, providing detection signals for the controller in real time, and acquiring the detection signals in real time in the process of outputting power of the wireless charger through the controller, so that whether the area where the wireless charger body is located enters the living body or not can be judged in real time according to the detection signals, and an alarm device can be controlled to alarm in time when the area where the wireless charger is located is determined to enter the living body, and a user can be reminded in time, and animals can be warned and driven away.

Optionally, referring to fig. 1 to 9, the capacitive detection sensor 10 includes at least two sets of comb capacitors, each set of comb capacitors includes at least one comb capacitor, and the same set of comb capacitors are connected in series and/or in parallel, the alarm device 20 includes at least two sonic radars 21 surrounding the wireless charger body 41, and the at least two sonic radars 21 include a first sonic radar 211, a second sonic radar 212, a third sonic radar 213, a fourth sonic radar 214, a fifth sonic radar 215, a sixth sonic radar 216, a seventh sonic radar 217, and an eighth sonic radar 218 surrounding the wireless charger 40; the first acoustic radar 211, the second acoustic radar 212, and the third acoustic radar 213 are arranged in the first direction X, the third acoustic radar 213, the fourth acoustic radar 214, and the fifth acoustic radar 215 are arranged in the second direction Y, the fifth acoustic radar 215, the sixth acoustic radar 216, and the seventh acoustic radar 217 are arranged in the first direction X, and the seventh acoustic radar 217, the eighth acoustic radar 218, and the first acoustic radar 211 are arranged in the second direction Y; wherein the first direction X intersects the second direction Y. Fig. 11 is a flowchart of a living body control method of a vehicle wireless charger according to an embodiment of the present invention, as shown in fig. 11, the living body control method of the vehicle wireless charger includes:

s210, detecting a living body entering the area where the wireless charger body is located from the periphery of the wireless charger body by a capacitive detection sensor, and generating a detection signal.

S220, detecting signals fed back by the comb capacitors of each group are correspondingly acquired one by one.

S230, judging whether a living body enters the area where the wireless charger body is located according to detection signals fed back by the comb-shaped capacitors of each group; if yes, S240 is executed.

S240, determining the entering direction of the living body according to the detection signals fed back by the comb-type capacitors.

S250, controlling at least one sound wave radar on the side opposite to the direction of the living body to transmit sound wave signals according to the direction of the living body.

Specifically, when the plurality of groups of comb capacitors are arranged around the wireless charger body, the controller can judge whether a living body enters the area where the wireless charger body is located according to detection signals fed back by the comb capacitors of each group on one hand, and can determine the direction of the living body entering according to the detection signals fed back by the comb capacitors of each group on the other hand, so that at least one sound wave radar on the side opposite to the direction of the living body entering is controlled to emit sound wave signals according to the direction of the living body entering, and the living body can be effectively driven to return from an animal according to an original path.

Optionally, fig. 12 is a flowchart of a method for controlling living body detection of a wireless charger for a vehicle according to an embodiment of the present invention, as shown in fig. 12, where the method for controlling living body detection of a wireless charger for a vehicle includes:

s310, detecting a living body entering an area where the wireless charger body is located from the periphery of the wireless charger body by a capacitive detection sensor, and generating a detection signal;

s320, the controller acquires the detection signal and controls the alarm device to alarm according to the detection signal.

S330, controlling the wireless charger to be in a non-working state.

S340, acquiring detection signals in real time when the wireless charger is in a non-working state.

S350, judging whether a living body exists in the area where the wireless charger body is located according to the detection signal; if not, S360 is performed.

S360, restarting the wireless charger to enable the wireless charger to be in an operating state.

Specifically, when the controller controls the alarm device to alarm according to the detection signal, the controller also needs to control the wireless charger to stop outputting power, namely, the wireless charger is controlled to be in a non-working state, and when the wireless charger is controlled to stop outputting power, the detection signal is continuously acquired to judge whether the living body leaves the area where the wireless charger body is located, until the situation that the living body where the wireless charger body is located does not enter is determined, the wireless charger is restarted, so that the wireless charger is in a working state, and the power is continuously output.

For example, the detection signal may be continuously acquired within a preset time after the living body which does not enter the area where the wireless charger body is located is determined, whether the living body enters the area where the wireless charger body is located again is determined according to the detection signal, and if the living body does not enter the area where the wireless charger body is located within the preset time, the wireless charger is restarted, so that the wireless charger is in a working state, and power is continuously output. The preset time can be set according to the requirement, for example, 30s.

The living body control method of the wireless charger for the vehicle, provided by the embodiment of the invention, can ensure that the charging system can safely restart power transmission as soon as possible after stopping the vehicle due to the occurrence of an alarm triggered by a small animal, can quickly restart wireless charging within a certain time after the small animal is driven away, and can improve the sensory experience of customers on the charging effect of products while enhancing the protection of the small animal by wireless charging.

Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims

1. A living body detection apparatus of a wireless charger for a vehicle, the wireless charger being for wireless charging of an electric vehicle, comprising: a capacitive detection sensor, an alarm device and a controller;

the controller is respectively and electrically connected with the capacitive detection sensor and the alarm device; the controller is used for acquiring the detection signal when the wireless charger charges the vehicle to be charged, and controlling the alarm device to alarm according to the detection signal;

the capacitive detection sensor comprises at least two groups of comb capacitors, each group of comb capacitors comprises at least one comb capacitor, and the comb capacitors of the same group are connected in series and/or in parallel; the controller is used for obtaining detection signals fed back by the comb capacitors in a one-to-one correspondence manner, and controlling the alarm state of the alarm device according to the detection signals fed back by the comb capacitors in each group;

the at least two sets of the comb capacitors comprise a first comb capacitor set and a second comb capacitor set; orthographic projections of the first comb-type capacitor group and the second comb-type capacitor group in the direction of the plane of the wireless charger body are L-shaped, and the first comb-type capacitor group and the second comb-type capacitor group encircle the wireless charger body in an end-to-end adjacent mode; or the at least two groups of comb capacitors comprise a first comb capacitor group, a second comb capacitor group, a third comb capacitor group and a fourth comb capacitor group, and the first comb capacitor group, the second comb capacitor group, the third comb capacitor group and the fourth comb capacitor group are sequentially arranged around the wireless charger body; the first comb-type capacitor group and the third comb-type capacitor group are respectively positioned at two opposite sides of the wireless charger body, and the second comb-type capacitor group and the fourth comb-type capacitor group are respectively positioned at two opposite sides of the wireless charger body;

the alarm device comprises at least two sonic radars surrounding the wireless charger; the controller is used for controlling the emitted sound wave signals of the sound wave radars in a one-to-one correspondence mode according to the detection signals fed back by the comb-type capacitors;

the at least two sonic radars comprise a first sonic radar, a second sonic radar, a third sonic radar, a fourth sonic radar, a fifth sonic radar, a sixth sonic radar, a seventh sonic radar and an eighth sonic radar which are encircling the periphery of the wireless charger; the first acoustic radar, the second acoustic radar and the third acoustic radar are arranged along a first direction, the third acoustic radar, the fourth acoustic radar and the fifth acoustic radar are arranged along a second direction, the fifth acoustic radar, the sixth acoustic radar and the seventh acoustic radar are arranged along the first direction, and the seventh acoustic radar, the eighth acoustic radar and the first acoustic radar are arranged along the second direction; wherein the first direction intersects the second direction.

2. The living body detection device of a wireless charger for a vehicle according to claim 1, further comprising a housing provided at least around the wireless charger body;

3. A living body control method of a vehicle wireless charger, which is executed by the living body detection device of a vehicle wireless charger according to any one of claims 1 to 2, characterized by comprising:

4. A method of controlling a living body of a wireless charger for a vehicle according to claim 3, wherein the capacitive detection sensor comprises at least two sets of comb capacitors, each set of comb capacitors comprising at least one of the comb capacitors, and the same set of comb capacitors are connected in series and/or in parallel;

5. The method for controlling living body detection of a wireless charger for a vehicle according to claim 3, further comprising, after the controller acquires the detection signal and controls the alarm device to alarm according to the detection signal:

controlling the wireless charger to be in a non-working state;