CN114435158A

CN114435158A - Living body detection device and control method of vehicle wireless charger

Info

Publication number: CN114435158A
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: 2022-05-06
Anticipated expiration: 2042-02-18
Also published as: CN114435158B

Abstract

The invention discloses a living body detection device and a control method of a vehicle wireless charger, wherein the wireless charger is used for wirelessly charging an electric automobile, and is characterized by comprising the following steps: the device comprises 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 electrically connected with the capacitive detection sensor and the alarm device; the controller is used for acquiring detection signals when the wireless charger charges a vehicle to be charged, controlling the alarm device to give an alarm according to the detection signals, controlling the alarm device to give an alarm in time when determining that the area where the wireless charger is located enters a living body, and timely playing a role in reminding a user and playing a role in 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 vehicle wireless charger.

Background

The existing wireless charging system for the electric automobile is in a charging process, namely a power transmission process, a wireless charging device can generate heat, living animals such as cats and dogs are attracted to be favored to get warm on the wireless charging device which is close to the heating device easily, or people can stretch limbs such as hands or feet to positions close to the wireless charging device under the unknown condition, if a human body or an animal enters a living body protection area of a wireless charging area and stays for too long time, the probability that nerves or tissues of the human body or the animal are damaged is increased.

The live body detection device among the prior art can not play abundant warning effect, especially to the animal, can not fully consider the warning and driving away to the toy, is difficult to avoid the toy to come in and go out wireless charging protection zone frequently, leads to charging system to shut down because of appearing frequently reporting to the police, influences charging persistence and the customer experience of system.

Disclosure of Invention

The invention provides a living body detection device and a control method of a vehicle wireless charger, which are used for effectively detecting a living body in an area where the wireless charger is located and effectively warning and driving away the living body 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 vehicle wireless charger, where the wireless charger is used to wirelessly charge an electric vehicle, and the apparatus includes: the device comprises 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 electrically connected with the capacitive detection sensor and the alarm device respectively; the controller is used for acquiring the detection signal when the wireless charger charges a vehicle to be charged, and controlling the alarm device to give an 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 acquiring detection signals fed back by the comb capacitors of each group 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 of each group.

Optionally, the at least two groups of comb capacitors include a first comb capacitor group and a second comb capacitor group; orthographic projections of the first comb-shaped capacitor group and the second comb-shaped capacitor group in the direction of the plane of the wireless charger body are both L-shaped, and the first comb-shaped capacitor group and the second comb-shaped capacitor group are adjacent in head and tail to surround the wireless charger body.

Optionally, the at least two groups of comb capacitors include 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-shaped capacitor group and the third comb-shaped capacitor group are respectively located on two opposite sides of the wireless charger body, and the second comb-shaped capacitor group and the fourth comb-shaped capacitor group are respectively located on 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, close to the wireless charger body, of the shell.

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

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

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 sonic radar, the second sonic radar and the third sonic radar 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.

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

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;

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

Optionally, the capacitive detection sensor includes at least two groups of comb capacitors, each group of comb capacitors includes 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 sound wave radars surrounding the wireless charger body, the at least two sound wave radars comprise a first sound wave radar, a second sound wave radar, a third sound wave radar, a fourth sound wave radar, a fifth sound wave radar, a sixth sound wave radar, a seventh sound wave radar and an eighth sound wave radar surrounding the wireless charger body, the first sound wave radar, the second sound wave radar and the third sound wave radar are arranged along a first direction, the third sound wave radar, the fourth sound wave radar and the fifth sound wave radar are arranged along a second direction, the fifth sound wave radar, the sixth sound wave radar and the seventh sound wave radar are arranged along the first direction, and the seventh sound wave radar, the eighth sound wave radar and the first sound wave 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 give an alarm according to the detection signal, and the method comprises the following steps:

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

judging whether a living body enters the area where the wireless charger body is located or not according to the detection signals fed back by the comb capacitors in each group;

if so, determining the direction of the living body entering according to the detection signals fed back by the comb-shaped capacitors of each group;

and controlling at least one sonic radar on the opposite side of the direction of the living body entering to emit sonic signals according to the direction of the living body entering.

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 of the wireless charger body 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, provided by the embodiment of the invention, the capacitive detection sensor is arranged around the wireless charger, so that 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, and a detection signal is provided for the controller in real time, so that 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 or not according to the detection signal in real time, and therefore, when the area where the wireless charger is located is determined to have the living body entering, the alarm device can be controlled to give an alarm in time, a user can be reminded in time, and animals can be warned and repelled.

Drawings

FIG. 1 is a schematic structural diagram of a living body detecting 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 biopsy device of a wireless charger for a vehicle according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of another living body detecting apparatus of a wireless charger for a vehicle 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 detection sensor according to an embodiment of the present invention;

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

FIG. 7 is a schematic structural diagram of a biopsy device of a wireless charger for a vehicle according to an 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 direction AA' of FIG. 8;

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

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

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

Detailed Description

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

The embodiment of the invention provides a living body detection device of a wireless charger of a vehicle, wherein the wireless charger is used for wirelessly charging an electric vehicle, fig. 1 is a schematic structural diagram of the living body detection device of the wireless charger of the vehicle provided by the embodiment of the invention, fig. 2 is a schematic structural diagram of a circuit of the living body detection device of the wireless charger of the vehicle provided by the embodiment of the invention, and as shown in fig. 1 and fig. 2, the living body detection device of the wireless charger of the vehicle 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 the detection signal when the wireless charger 40 charges the 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 the vehicle-mounted end and a power output device at the 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 wireless charger may move to a position 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 may 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 adjacent to and around the wireless charger 40, so that, when a living body enters the area of the wireless charger 40 from around the wireless charger 40, the capacitive impedance of the capacitive detection sensor 10 changes, the capacitive impedance of the capacitive detection sensor 10 may thus 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, for example, which may be reused by the controller provided by the embodiments of the present invention, so that, when the wireless charger charges the vehicle to be charged, the controller 30 can judge whether a living body enters the area where the wireless charger 40 is located according to the detection signal, so that when it is determined that a living body enters the area of the wireless charger 40, the alarm device 20 can be timely controlled to alarm, so as to remind the user, or warn and drive away the animal.

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 structural diagram of a circuit of a capacitive detection sensor according to an embodiment of the present invention, and referring to 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 comb capacitors of the same set are connected in series, and the controller 30 is configured to obtain detection signals fed back by the comb capacitors of the sets 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 comb capacitors of the sets.

The comb-shaped capacitor can be formed by a detection electrode PCB and a grounding electrode PCB, wherein the detection electrode PCB is designed in a comb shape, so that the internal part of the detection electrode plate can not form a strong eddy effect on the premise of not influencing the detection sensitivity of the capacitance sensor, the service life of the detection electrode can be prolonged, and the problem that the inherent stray capacitance of the detection circuit generates a large temperature drift due to the temperature rise of the electrode plate caused by the eddy effect to influence the accuracy of the living body measurement can be avoided.

Illustratively, each group of comb capacitors includes 4 comb capacitors, i.e., 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, wherein 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, i.e., the second end of the first comb capacitor C1 is electrically connected to the first end of the second comb capacitor C2, the second end of the second comb capacitor C2 is electrically connected to the first end of the third comb capacitor C3, the second end of the third comb capacitor C3 is electrically connected to the first end of the fourth comb capacitor C4, and the controller 30 may be provided with a first signal acquisition circuit (i.e., a first signal acquisition circuit 31) corresponding to each group, the first end of the first comb capacitor C1 and the second end of the fourth comb capacitor C4 are electrically connected to the input end of the first signal acquisition circuit 31, which is disposed corresponding to the first comb capacitor C1, so that a detection signal can be acquired for each group of comb capacitors, and the living body in the area where the wireless charger body 41 is located can be effectively detected while the signal processing amount of the controller 30 is small.

Alternatively, as shown in fig. 5, in another schematic circuit structure of the capacitive detection sensor, 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, 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 arranged in correspondence with each set of comb capacitors, 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 terminals of the first signal acquisition circuit 31, 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 terminals of the second signal acquisition circuit 32, the acquisition of 2-path detection signals can be realized aiming at a group of comb-shaped capacitors, and the accuracy of in-vivo detection can be improved.

Fig. 6 is a schematic circuit diagram of another capacitive detection sensor according to an embodiment of the present invention, and comb capacitors of the same group may also be connected in parallel. Similarly, taking an example that each group of comb capacitors includes 4 comb capacitors, 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, and the second end of the second comb capacitor C2 is electrically connected to the second end of the fourth comb capacitor C4, in this case, the controller 30 may include a first signal acquisition circuit 31 and a second signal acquisition circuit 32 that are disposed corresponding to each group of comb capacitors, the two ends of the first comb capacitor C1 or the two ends of the third comb capacitor C3 may be electrically connected to the input ends of the first signal acquisition circuit 31, the two ends of the second comb capacitor C2 or the two ends of the fourth comb capacitor C4 may be electrically connected to the input ends of the second signal acquisition circuit 32, detection of a living body can be achieved as well.

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

Alternatively, referring to fig. 3, the at least two sets of comb capacitors include a first comb capacitor set 11 and a second comb capacitor set 12; orthographic projections of the first comb-shaped capacitor group 11 and the second comb-shaped capacitor group 12 in the direction of the plane of the wireless charger body 41 are both in an L shape, and the first comb-shaped capacitor group 11 and the second comb-shaped capacitor group 12 are adjacent in a head-to-tail manner and surround the wireless charger body 41.

Specifically, when the projection of the wireless charger body 41 on the ground is approximately rectangular, the orthogonal projections of the first comb-shaped capacitor group 11 and the second comb-shaped capacitor group 12 in the direction of the plane of the wireless charger body 41 can be both "L" shaped, so that the first comb-shaped capacitor group 11 can surround two adjacent sides of the four sides of the wireless charger 40, the second comb-shaped capacitor group 12 can surround two other adjacent sides of the four sides of the wireless charger 40, and the first comb-shaped capacitor group 11 and the second comb-shaped capacitor group 12 can surround the wireless charger body 41, at this time, the controller can determine whether living bodies enter two sides of the periphery of the wireless charger body 41 according to the detection signal provided by the first comb-shaped capacitor group 11, and determine whether living bodies enter the other two sides of the periphery of the wireless charger body 41 according to the detection signal provided by the second comb-shaped capacitor group 12, the detection of the periphery of the wireless charger body 41 in all directions can be realized.

Optionally, fig. 7 is a schematic structural diagram of another biopsy device of a vehicle wireless charger 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-like capacitor set 11 and the third comb-like capacitor set 13 are respectively located on two opposite sides of the wireless charger body 41, and the second comb-like capacitor set 12 and the fourth comb-like capacitor set 14 are respectively located on 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 substantially rectangular, 4 sets of comb capacitors may be disposed in parallel and close to four sides of the wireless charger body 41, that is, the first comb capacitor set 11 and the third comb capacitor set 13 are respectively located on 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 on two opposite sides of the wireless charger body 41, so that the controller can obtain detection signals from the 4 sets of comb capacitors, and can perform more accurate living body detection on four sides of the wireless charger body 41.

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

Specifically, in order to protect the wireless charger body 41, the housing 42 is usually disposed around the wireless charger body 41, the upper housing 43 may be further configured to form a sealed structure with the housing 42 to completely cover the wireless charger body 41, and the housing 42 may serve as a support structure for the capacitive detection sensor 10, that is, the capacitive detection sensor 10 may be attached to the inner side of the housing 42 (i.e., one side of the wireless charger body 41). For example, the housing 42 may be 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 slope structure can prevent a vehicle from being bumped or from easily passing through 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, and the capacitive detection sensor can prevent a motion living body outside a living body detection area from triggering due to over sensitivity, thereby causing false misjudgment.

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

Specifically, can encircle wireless charger 40's casing 42 and set up two at least sound wave radars 21, and each sound wave radar 21 can set up for burying formula, when controller 30 confirms that there is the living body to enter into wireless charger body 41 place region according to the detected signal, steerable at least one sound wave radar 21 transmission sound wave, when the living body that enters into wireless charger body 41 place region is the animal, the sound wave of sound wave radar 21 transmission can play warning and the effect of driving away to the animal to drive the animal out of wireless charger body 41 place region 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 common cases that cats and dogs enter a charging place in an actual application scene, the frequency of the sound wave is preferably set to be 60-6500 Hz.

Alternatively, 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 surrounding the wireless charger 40; the first sonic radar 211, the second sonic radar 212, and the third sonic radar 213 are arranged in the first direction X, the third sonic radar 213, the fourth sonic radar 214, and the fifth sonic radar 215 are arranged in the second direction Y, the fifth sonic radar 215, the sixth sonic radar 216, and the seventh sonic radar 217 are arranged in the first direction X, and the seventh sonic radar 217, the eighth sonic radar 218, and the first sonic 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 a living body does not enter the area where the wireless charger body 40 is located and to effectively drive away 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 wireless charger 40, for example, each sonic radar may be disposed around the outside of the housing 42, if it is assumed that the projection of the housing 42 on the ground is substantially rectangular, and four sides of the housing 42 may be a first side 421, a second side 422, a third side 423, and a fourth side 424 counterclockwise, respectively, the first direction X may be parallel to the first side 421 and the third side 423, and the second direction Y may be parallel to the second side 422 and the fourth side 424, the first sonic radar 211, the second sonic radar 212, and the third sonic radar 213 may be disposed at a position close to the first side 421 parallel to the first direction X, third sonic radar 213, fourth sonic radar 214 and fifth sonic radar 215 can be on a parallel with the second direction Y and set up in the position that is close to second side 422, fifth sonic radar 215, sixth sonic radar 216 and seventh sonic radar 217 can be on a parallel with first direction X and set up in the position that is close to third side 423, seventh sonic radar 217, eighth sonic radar 218 and first side 421 can be on a parallel with the second direction Y and set up in the position that is close to fourth side 424, so set up and to make the sound wave beam cover whole wireless charger body 41 place region.

For example, when the wireless charger body 41 starts to output power, the controller 30 may control the first sonic radar 211, the second sonic radar 212, the third sonic radar 213, the fourth sonic radar 214, the fifth sonic radar 215, the sixth sonic radar 216, the seventh sonic radar 217, and the eighth sonic radar 218 to sequentially emit sound waves at a first preset time, and also to sequentially emit sound waves at a clockwise order or a counterclockwise order, wherein the first preset time may be 5 s; if a living body is detected to enter the area where the wireless charger body 40 is located, one or more of the sonic radars can be controlled to emit sonic waves, for example, if the controller determines that the living body enters the area where the wireless charger body 41 is located according to detection signals of the second side 422 and the third side 423, the controller can determine 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 controller can control the first sonic radar 211, the second sonic radar 212 and the eighth sonic radar 218 to simultaneously start emitting sonic waves for 2s (which can be set by itself), and then control the first sonic radar 211, the third sonic radar 213 and the seventh sonic radar 217 to simultaneously start emitting sonic waves for 2s (which can be set by itself), and the sonic waves are taken as a response period and circulated for 10s (which can be set by itself) to drive the animal to return as an original path; if it is detected after 10s that the living body enters the area where the wireless charger body 41 is located and does not leave, the first sonic radar 211, the third sonic radar 213, the fifth sonic radar 215 and the seventh sonic radar 217 can be controlled to simultaneously start to transmit sound waves for 2s, then the second sonic radar 212, the fourth sonic radar 214, the sixth sonic radar 216 and the eighth sonic radar 218 are controlled to simultaneously start to transmit sound waves for 2s, the response period is taken as a response period, the cycle lasts for 10s totally, if the living body still does not leave the area where the wireless charger body 41 is located after 20 s, the eight sonic radars are controlled to simultaneously start to transmit sound waves, and the mode of controlling the eight sonic radars to sequentially start to transmit sound waves is returned after the living body leaves is determined. Through the control mode to the acoustic radar, the least acoustic radar can be started as far as possible to realize the driving purpose while the living body is effectively driven away, and the power consumption of the living body detection device of the vehicle wireless charger is effectively reduced.

In addition, the protection device 20 may further include a plurality of LED strips 22 disposed around the wireless charger 40, each LED strip 22 may be designed to be buried, each LED strip may be disposed in parallel and close to a side of the housing, when the wireless charger body 41 is in a dormant state, the controller 30 may control each LED strip 22 to emit green light, 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 strip to emit yellow light to warn surrounding people, if it is detected that a living body enters the area where the wireless charger body 41 is located during the output power of the wireless charger body 41, each LED strip is controlled to emit red light and flash at a certain frequency to warn a user, the flash frequency of each LED strip is preferably set to be 17Hz to 21Hz, in this frequency range, human vision is sensitive to the flicker frequency of the light. Therefore, the dead zone of the living body detection of the wireless charging system can be reduced, the self-safety awareness of a user on the influence of wireless charging is improved through visual psychological suggestion before or after a human body enters a wireless charging living body protection area, the time of the human body staying in the charging protection area is shortened, and therefore 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 detection control method of a vehicle wireless charger, which can effectively detect whether a living body enters an area where the wireless charger is located in the process of outputting power of the wireless charger and effectively warn and drive away the living body, and can be executed by adopting the living body detection device of the wireless charging system provided by any embodiment of the invention.

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

s110, 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.

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

According to the living body detection control method of the vehicle wireless charger, living bodies entering the area where the wireless charger body is located from the periphery of the wireless charger body are detected in real time through the capacitive detection sensors arranged around the wireless charger body in a surrounding mode, the detection signals are provided for the controller in real time, the detection signals are obtained in real time in the process that the controller outputs power, whether the area where the wireless charger body is located enters the living bodies or not is judged according to the detection signals in real time, and therefore when the fact that the living bodies enter the area where the wireless charger is located is determined, the alarm device can be controlled to give an alarm in time, a user can be reminded in time, and animals can be warned and repelled.

Optionally, referring to fig. 1 to 9, the capacitive detection sensor 10 includes at least two sets of comb-type capacitors, each set of comb-type capacitors includes at least one comb-type capacitor, and the comb-type capacitors of the same set 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 sonic radar 211, the second sonic radar 212, and the third sonic radar 213 are arranged in the first direction X, the third sonic radar 213, the fourth sonic radar 214, and the fifth sonic radar 215 are arranged in the second direction Y, the fifth sonic radar 215, the sixth sonic radar 216, and the seventh sonic radar 217 are arranged in the first direction X, and the seventh sonic radar 217, the eighth sonic radar 218, and the first sonic 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 method for controlling a living body detection of a wireless charger of a vehicle according to an embodiment of the present invention, and as shown in fig. 11, the method for controlling a living body detection of a wireless charger of a vehicle includes:

s210, 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.

And S220, acquiring detection signals fed back by the comb capacitors of each group in a one-to-one correspondence manner.

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

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

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

Specifically, when a plurality of groups of comb-type capacitors are arranged around the wireless charger body, the controller can judge whether a living body enters the area of the wireless charger body according to detection signals fed back by the comb-type capacitors, and can determine the direction of the entering of the living body according to the detection signals fed back by the comb-type capacitors, so that at least one sound wave radar on one side opposite to the direction of the entering of the living body is controlled according to the direction of the entering of the living body to emit sound wave signals, and animals can be effectively driven away to return according to the original way.

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

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

and S320, the controller acquires the detection signal and controls the alarm device to alarm according to the detection signal.

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

And S340, acquiring a detection signal 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, go to S360.

And S360, restarting the wireless charger to enable the wireless charger to be in a working state.

Specifically, when the controller controls the alarm device to alarm according to the detection signal, the wireless charger is controlled to stop outputting power, that is, 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, and until it is determined that no living body enters the area where the wireless charger body is located, the wireless charger is restarted to enable the wireless charger to be in the working state and continue outputting power.

For example, the detection signal may be continuously acquired within a preset time after it is determined that there is no living body entering the area where the wireless charger body is located, and it is determined whether there is a living body entering the area where the wireless charger body is located again according to the detection signal, and if there is no living body entering the area where the wireless charger body is located again within the preset time, the wireless charger is restarted, so that the wireless charger is in the operating state, and power is continuously output. The preset time can be set according to the requirement, and for example, can be 30 s.

The living body detection control method of the vehicle wireless charger provided by the embodiment of the invention can ensure that the power transmission of the charging system is restarted safely as soon as possible after the charging system is stopped due to the fact that the alarm is triggered by the small animal, the wireless charging can be restarted quickly within a certain time after the small animal is driven away, and the sensory experience of a customer on the charging effect of a product can be improved while the protection of the small animal by the wireless charging is enhanced.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. 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, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

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

2. The in-vivo detection device for a vehicle wireless charger according to claim 1, wherein the capacitive detection sensor comprises at least two sets of comb-like capacitors, each set of comb-like capacitors comprises at least one comb-like capacitor, and the comb-like capacitors of the same set are connected in series and/or in parallel;

3. The in-vivo detection device for a vehicle wireless charger according to claim 2, wherein the at least two sets of comb capacitors comprise a first comb capacitor set and a second comb capacitor set; orthographic projections of the first comb-shaped capacitor group and the second comb-shaped capacitor group in the direction of the plane of the wireless charger body are both L-shaped, and the first comb-shaped capacitor group and the second comb-shaped capacitor group are adjacent in head and tail to surround the wireless charger body.

4. The in-vivo detection device for the vehicle wireless charger according to claim 2, wherein the at least two sets of comb capacitors comprise 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 arranged around the wireless charger body;

5. The in-vivo detection device of a wireless charger for a vehicle according to claim 1, wherein the wireless charger further comprises a housing disposed at least around the wireless charger body;

6. The in-vivo detection device for a wireless charger of a vehicle according to claim 2, wherein the alarm device comprises at least two sonic radars surrounding the wireless charger;

7. The in-vivo detection device for a vehicle wireless charger according to claim 6, wherein 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 surrounding the wireless charger;

8. A living body detection control method of a wireless charger for a vehicle, performed by the living body detection device of the wireless charging system according to any one of claims 1 to 7, characterized by comprising:

9. The in-vivo detection control method for the vehicle wireless charger according to claim 8, wherein the capacitive detection sensor comprises at least two groups of comb-like capacitors, each group of comb-like capacitors comprises at least one comb-like capacitor, and the comb-like capacitors of the same group are connected in series and/or in parallel;

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

10. The in-vivo detection control method for a wireless charger of a vehicle according to claim 8, 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;

judging whether a living body exists in the area where the wireless charger body is located or not according to the detection signal;