CPD antenna design method and device

Abstract

The invention relates to the technical field of antennas, and discloses a CPD antenna design method and device, and the method comprises the steps: configuring a CPD antenna corresponding to a target vehicle according to a determined target signal coverage demand; wherein the overflow gain difference threshold value, corresponding to any vehicle window component in the target vehicle, of the configured CPD antenna is smaller than or equal to the determined target gain difference threshold value. Visibly, by implementing the method and the device, the configured CPD antenna can accurately control the energy overflow of the CPD antenna while meeting the target signal coverage requirement, so that the design rationality of the CPD antenna can be improved on the basis of improving the control accuracy of the detection range of the CPD antenna and improving the energy overflow control accuracy of the CPD antenna; therefore, the detection accuracy of the CPD antenna is improved, and the internal safety of the vehicle is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of antennas, in particular to a CPD antenna design method and device. BACKGROUND

[0002] In recent years, due to the negligence of parents, children are often trapped in the car, so that the safety in the car is valued, and the demand for safety in the car is increasing. In the prior art, the CPD (Child Presence Detection, child presence detection) antenna is the core component of the child presence detection system in the car, which is mainly used for sensing and identifying the vital signs and dynamic behavior of children in the car, and can effectively reduce the occurrence of safety accidents in the car.

[0003] However, in actual application, if the CPD antenna is used for target detection in a sealed or relatively sealed cabin, the following problems may exist: in the case of ensuring that the vehicle interior area is not missed, the energy of the CPD antenna will overflow to the outside of the vehicle window, resulting in false detection of the target outside the vehicle (such as a pedestrian outside the vehicle); and if the CPD antenna is improperly designed in the vehicle, it is easy to cause the antenna signal to reflect and overflow or form a blind area of the signal in the vehicle; these defects will reduce the accuracy of the target detection result of the CPD antenna.

[0004] Therefore, it is particularly important to propose a technical scheme capable of improving the design rationality of the CPD antenna, thereby improving the accuracy of target detection of the CPD antenna, and improving the safety of the vehicle interior. SUMMARY The present application provides a CPD antenna design method and device, which can improve the design rationality of the CPD antenna, thereby improving the accuracy of target detection of the CPD antenna, and is beneficial to improve the safety of the vehicle interior.

[0005] In order to solve the above technical problems, the first aspect of the present application discloses a CPD antenna design method, which comprises: According to the determined target signal coverage requirement, the CPD antenna corresponding to the target vehicle is configured; Among them, the overflow gain difference threshold value corresponding to any vehicle window component in the target vehicle of the configured CPD antenna is less than or equal to the determined target gain difference threshold value.

[0006] The second aspect of the present application discloses a CPD antenna design device, which comprises: The configuration module is configured to configure the CPD antenna corresponding to the target vehicle according to the determined target signal coverage requirement; Among them, the overflow gain difference threshold value corresponding to any vehicle window component in the target vehicle of the configured CPD antenna is less than or equal to the determined target gain difference threshold value.

[0007] As an optional implementation, in the second aspect of the present application, the target gain difference threshold is greater than or equal to 15 dB and less than 30 dB.

[0008] As an optional implementation, in the second aspect of the present application, the target gain difference threshold is determined by the following manner: For each of the vehicle window components, according to the positional relationship between the CPD antenna and the vehicle window component, a target gain difference threshold of the CPD antenna for the vehicle window component is determined.

[0009] As an optional implementation, in the second aspect of the present application, the target signal coverage requirement includes a signal coverage requirement and a signal overflow control requirement; And, the target signal coverage requirement is determined by the following manner: vehicle cabin data of the target vehicle and an installation position of the CPD antenna on the target vehicle are determined; the vehicle cabin data includes positional information corresponding to a plurality of vehicle components in the target vehicle; all the vehicle components at least include all the vehicle window components; the distance between the installation position and the central position of the vehicle cabin of the target vehicle is less than a preset distance threshold; According to the vehicle cabin data and the installation position, a signal coverage requirement of the CPD antenna on the target vehicle is determined; According to the signal coverage requirement, antenna element parameters required for setting the CPD antenna to meet the signal coverage requirement are determined; According to the vehicle cabin data and the antenna element parameters, a signal overflow control requirement of the CPD antenna on the target vehicle is determined.

[0010] As an optional implementation, in the second aspect of the present application, each of the vehicle window components is one of a front windshield, a rear windshield, a left window and a right window; And, all the vehicle components further include at least one row of footwell areas of the target vehicle and / or at least one row of seat areas of the target vehicle; wherein each row of the footwell areas includes a left footwell area and / or a right footwell area; each row of the seat areas includes a left seat area and / or a right seat area.

[0011] As an optional implementation, in the second aspect of the present application, the specific manner of determining the signal coverage requirement of the CPD antenna on the target vehicle according to the vehicle cabin data and the installation position includes: According to the cabin data and the installation position, a distance information set corresponding to the installation position is determined; the distance information set includes a plurality of distance information, and each distance information is distance information between the CPD antenna and one of the vehicle components; According to the installation position and the distance information set, signal coverage angle data of the CPD antenna about a preset vehicle body direction of the target vehicle is calculated based on a preset coverage angle calculation formula; the preset vehicle body direction includes a vehicle length direction and / or a vehicle width direction; and the signal coverage angle data includes signal angle data of the CPD antenna about a plurality of the vehicle components. The signal coverage requirement includes the signal coverage angle data.

[0012] As an optional implementation, in the second aspect of the present application, the specific manner of determining the antenna element parameters required for the CPD antenna to meet the signal coverage requirement includes: A preset parameter corresponding to the antenna element required for the CPD antenna is obtained; the preset parameter includes a beam width about the preset vehicle body direction under a plurality of lobe widths; A preset coverage gain difference threshold value matched with the target vehicle is obtained; the coverage gain difference threshold value is a maximum gain difference value corresponding to the preset parameter of the CPD antenna and the determined maximum coverage angle data; the maximum coverage angle data includes angle data with the largest value in the signal coverage angle data in the vehicle length direction and the vehicle width direction, respectively; According to the preset parameter, the signal coverage angle data and the coverage gain difference threshold value, a first antenna element quantity required in the vehicle length direction and a second antenna element quantity required in the vehicle width direction are determined; According to the first antenna element quantity and the second antenna element quantity, an antenna array parameter corresponding to the CPD antenna is determined as the antenna element parameter required for the CPD antenna to meet the signal coverage requirement.

[0013] As an optional implementation, in the second aspect of the present application, the specific manner of determining the signal overflow control requirement of the CPD antenna in the target vehicle by the configuration module according to the cabin data and the antenna element parameter includes: An initial component gain corresponding to each of the vehicle components is obtained; According to the preset vehicle cabin gain difference calculation formula, the estimated component gain difference corresponding to each vehicle window component is calculated according to the vehicle cabin data, the antenna element parameters and the initial component gain corresponding to each vehicle component; the estimated component gain difference corresponding to each vehicle window component is the gain difference between the overflow critical point corresponding to the vehicle window component and the coverage critical point corresponding to the vehicle window component; According to the estimated component gain difference corresponding to each vehicle window component, the component gain difference threshold corresponding to the vehicle window component is determined as the overflow gain difference threshold corresponding to the vehicle window component; the component gain difference threshold corresponding to each vehicle window component is the gain difference threshold between the overflow critical point corresponding to the vehicle window component and the coverage critical point corresponding to the vehicle window component, and the component gain difference threshold corresponding to each vehicle window component is greater than or equal to the estimated component gain difference corresponding to the vehicle window component; The signal overflow control requirement of the CPD antenna on the target vehicle includes the overflow gain difference threshold corresponding to each vehicle window component.

[0014] As an optional implementation, in the second aspect of the present application, the configuration module configures the specific mode of the CPD antenna corresponding to the target vehicle according to the determined target signal coverage requirement, which includes: According to the determined antenna element parameters required by the CPD antenna and the signal overflow control requirement, the antenna configuration parameters of the CPD antenna on the target vehicle are determined; the antenna configuration parameters are used to configure the CPD antenna meeting the signal coverage requirement and the signal overflow control requirement; According to the antenna configuration parameters, the CPD antenna corresponding to the target vehicle is configured.

[0015] As an optional implementation, in the second aspect of the present application, the configuration module configures the specific mode of the CPD antenna corresponding to the target vehicle according to the determined antenna element parameters required by the CPD antenna and the signal overflow control requirement, which includes: It is judged whether any overflow gain difference threshold in the signal overflow control requirement is greater than or equal to the determined target gain difference threshold; When it is judged that at least one of the overflow gain difference thresholds in the signal overflow control requirement is greater than or equal to the target gain difference threshold, the power divider parameters corresponding to the signal overflow control requirement are determined; the power divider parameters are used to configure the power divider required by the CPD antenna in the target vehicle, so as to adjust the sidelobe width of the antenna element of the CPD antenna through the power divider; the antenna element parameters and the power divider parameters are determined as the antenna configuration parameters of the CPD antenna on the target vehicle; determining the antenna unit parameter as the antenna configuration parameter of the CPD antenna at the target vehicle when it is judged that there is no overflow gain difference threshold greater than or equal to the target gain difference threshold in the signal overflow control requirement.

[0016] As an optional implementation, in the second aspect of the present application, the specific way in which the configuration module determines the power divider parameter corresponding to the signal overflow control requirement comprises: obtaining a plurality of candidate power divider parameters; each of the candidate power divider parameters comprises an antenna power ratio; testing the adjustment gain difference corresponding to each of the window components under each of the candidate power divider parameters based on the power divider corresponding to each of the candidate power divider parameters; judging whether all of the adjustment gain differences corresponding to each of the candidate power divider parameters are less than the target gain difference threshold; determining the candidate power divider parameter as the power divider parameter corresponding to the signal overflow control requirement when it is judged that all of the adjustment gain differences corresponding to the candidate power divider parameter are less than the target gain difference threshold.

[0017] The third aspect of the present application discloses another CPD antenna design device, which comprises: a memory storing executable program codes; a processor coupled with the memory; the processor invokes the executable program codes stored in the memory to execute part or all of the steps of the CPD antenna design method disclosed in the first aspect of the present application.

[0018] The fourth aspect of the present application discloses a computer storage medium storing computer instructions, which are invoked to execute part or all of the steps of the CPD antenna design method disclosed in the first aspect of the present application.

[0019] Compared with the prior art, the present application has the following beneficial effects: In the present application, according to the determined target signal coverage requirement, the CPD antenna corresponding to the target vehicle is configured; wherein the overflow gain difference threshold of the configured CPD antenna for any window component in the target vehicle is less than or equal to the determined target gain difference threshold. It can be seen that the implementation of the present application can configure the CPD antenna required by the target vehicle according to the determined target signal coverage requirement, so that the overflow gain difference threshold of the CPD antenna for any window component is less than or equal to the target gain difference threshold, so that the configured CPD antenna can meet the target signal coverage requirement while accurately controlling the CPD antenna energy overflow, thereby improving the design rationality of the CPD antenna, making the designed CPD antenna more consistent with the cabin design of the vehicle itself, thereby facilitating to improve the detection accuracy of the CPD antenna in the vehicle, and further facilitating to improve the accuracy of the CPD detection result, and further facilitating to detect the abnormality in the vehicle in time, thereby reducing the occurrence of safety accidents in the vehicle, and further facilitating to improve the safety of the vehicle interior. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 is a flowchart of a CPD antenna design method disclosed by an embodiment of the present application; Figure 2 is a flowchart of another CPD antenna design method disclosed by an embodiment of the present application; Figure 3 is a cabin layout schematic diagram of a CPD antenna design method disclosed by an embodiment of the present application; Figure 4 is a cabin layout schematic diagram of another CPD antenna design method disclosed by an embodiment of the present application; Figure 5 is a principle schematic diagram of a CPD antenna design method disclosed by an embodiment of the present application; Figure 6 is a structure schematic diagram of a CPD antenna disclosed by an embodiment of the present application; Figure 7 is a structure schematic diagram of another CPD antenna disclosed by an embodiment of the present application; Figure 8 is a principle schematic diagram of another CPD antenna design method disclosed by an embodiment of the present application; Figure 9 is a flow diagram of still another CPD antenna design method disclosed by embodiments of the present application; Figure 10 is a structural diagram of a CPD antenna design device disclosed by embodiments of the present application; Figure 11 is a structural diagram of still another CPD antenna design device disclosed by embodiments of the present application. DETAILED DESCRIPTION

[0022] In order to make the personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0023] The terms "first", "second", and the like in the specification of the present application and the above-mentioned drawings are used to distinguish different objects, and are not used to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, device, product, or end including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product, or end.

[0024] In this document, the term "embodiment" means that the specific features, structures, or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it independent or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] This invention discloses a CPD antenna design method and apparatus. Based on the determined target signal coverage requirements, it configures the CPD antenna required for the target vehicle, ensuring that the overflow gain difference threshold of the CPD antenna for any window component is less than or equal to the target gain difference threshold. This allows the configured CPD antenna to accurately control CPD antenna energy overflow while meeting the target signal coverage requirements. This improves the accuracy of CPD antenna detection range control and energy overflow control, enhancing the design rationality of the CPD antenna and making it more compatible with the vehicle's cabin design. This, in turn, improves the detection accuracy of the CPD antenna within the vehicle, leading to more accurate CPD detection results and timely detection of in-vehicle anomalies, reducing the occurrence of in-vehicle safety accidents and ultimately improving vehicle interior safety. Detailed descriptions follow.

[0026] Example 1 Please see Figure 1 , Figure 1 This is a flowchart illustrating a CPD antenna design method disclosed in an embodiment of the present invention. Wherein, Figure 1 The described CPD antenna design method can be applied to a CPD antenna design device, which may include one of a smart device, a smart terminal, a smart system, and a server. The server can be a local server or a cloud server; this embodiment of the invention is not limited thereto. Furthermore, the device can be applied to smart vehicles, and these smart vehicles have CPD (Child Presence Detection) detection requirements; this embodiment of the invention is not limited thereto. Figure 1 As shown, the CPD antenna design method may include the following operations: 101. Based on the determined target signal coverage requirements, configure the CPD antenna corresponding to the target vehicle.

[0027] In this embodiment of the invention, the overflow gain difference threshold corresponding to any window component in the target vehicle after the configuration of the CPD antenna is less than or equal to the determined target gain difference threshold.

[0028] It can be seen that the method described in the embodiments of the present application can configure the CPD antenna required by the target vehicle according to the determined target signal coverage requirement, so that the CPD antenna has an overflow gain difference threshold value for any window component that is less than or equal to the target gain difference threshold value, thereby enabling the configured CPD antenna to precisely control the CPD antenna energy overflow while meeting the target signal coverage requirement, thereby improving the design rationality of the CPD antenna, making the designed CPD antenna more consistent with the vehicle cabin design, thereby facilitating the improvement of the detection accuracy of the CPD antenna in the vehicle, and thereby facilitating the improvement of the accuracy of the CPD detection result, and thereby facilitating the timely detection of abnormalities in the vehicle to reduce the occurrence of safety accidents in the vehicle, and thereby facilitating the improvement of the safety of the vehicle interior.

[0029] In an optional embodiment, the target gain difference threshold value is greater than or equal to 15 dB and less than 30 dB.

[0030] For example, the target gain difference threshold value can be 20 dB, or other values of gain difference, which is not limited by the embodiments of the present application.

[0031] It can be seen that by limiting the numerical range of the target gain difference threshold value to 15 dB-30 dB, the optional embodiment can more accurately control the energy overflow of the CPD antenna, thereby facilitating more accurate configuration of the CPD antenna, and thereby facilitating further improvement of the design rationality of the CPD antenna.

[0032] In an optional embodiment, the target gain difference threshold value is determined in the following manner: For each window component, the target gain difference threshold value of the CPD antenna for the window component is determined according to the positional relationship between the CPD antenna and the window component.

[0033] Optionally, the positional relationship between the CPD antenna and each window component can include the distance between the CPD antenna and each window component, and can also include the direction / angle between the CPD and each window component, which is not limited by the embodiments of the present application.

[0034] It should be noted that different vehicle body directions (e.g., vehicle length direction, vehicle width direction) require different vehicle window components to be analyzed. For example, in the vehicle length direction, the target gain difference threshold of the CPD antenna for the front windshield and / or the rear windshield needs to be analyzed, and in the vehicle width direction, the target gain difference threshold of the CPD antenna for at least one row of left windows and / or right windows needs to be analyzed. Further, since the distance between the CPD antenna and each vehicle window component is not necessarily equal, the target gain difference threshold for each vehicle window component can not be the same.

[0035] It can be seen that the optional embodiment can determine the target gain difference threshold of the CPD antenna for each vehicle window component by analyzing the positional relationship between the CPD antenna and each vehicle window component, and can achieve differentiated determination of the target gain difference threshold, thereby facilitating improved flexibility and accuracy in determining the target gain difference threshold for each vehicle window component, and further facilitating improved control accuracy of the energy overflow of the CPD antenna.

[0036] In another optional embodiment, the target signal coverage requirement can include a signal coverage requirement and a signal overflow control requirement.

[0037] Optionally, the target signal coverage requirement can be determined in the following manner: determining the cabin data of the target vehicle and the installation position of the CPD antenna on the target vehicle; the cabin data includes position information corresponding to a plurality of vehicle components in the target vehicle; all vehicle components at least include all vehicle window components; the distance between the installation position and the central position of the cabin of the target vehicle is less than a preset distance threshold; determining the signal coverage requirement of the CPD antenna on the target vehicle according to the cabin data and the installation position; determining the antenna element parameters required for setting the CPD antenna to meet the signal coverage requirement according to the signal coverage requirement; determining the signal overflow control requirement of the CPD antenna on the target vehicle according to the cabin data and the antenna element parameters.

[0038] Optionally, the position information corresponding to each vehicle component can include layout position information of the vehicle component in the cabin of the target vehicle and / or coordinate information of the vehicle component in the corresponding coordinate system of the target vehicle, which is not limited by the embodiments of the present application. Further optionally, the position information corresponding to each vehicle component can be the position information of the center point or the preset reference point of the vehicle component, which is not limited by the embodiments of the present application. For example, the reference point of the vehicle window component can be the lower edge, which is not limited by the embodiments of the present application. All vehicle components at least include all vehicle window components, which is not limited by the embodiments of the present application.

[0039] Wherein, optionally, the installation position of the CPD antenna on the target vehicle can be pre-set or determined through test experiments, and the embodiments of the present application are not limited; wherein, exemplarily, the pre-set distance threshold can be 10 centimeters or other numerical distance, and the embodiments of the present application are not limited; further, exemplarily, the installation position of the CPD antenna can coincide with the central position of the vehicle cabin or the distance between the installation position of the CPD antenna and the central position of the vehicle cabin is less than 10 centimeters, and the embodiments of the present application are not limited.

[0040] Wherein, the signal coverage requirement of the CPD antenna on the target vehicle can be used to represent the signal detection range required by the CPD antenna on the target vehicle; further, the signal detection range can be represented by at least one of the distance, angle, and area size, and the embodiments of the present application are not limited.

[0041] Wherein, the antenna unit parameter can include the number of antenna units required to be set in the target vehicle and / or the antenna array parameter corresponding to the CPD antenna, and the embodiments of the present application are not limited.

[0042] In the embodiments of the present application, the signal overflow control requirement of the CPD antenna on the target vehicle can be used to represent that the signal detection range of the CPD antenna is controlled within the target detection range corresponding to the vehicle cabin of the target vehicle / the energy overflow of the CPD antenna is controlled within the pre-set range corresponding to the vehicle cabin of the target vehicle when target detection is performed in the target vehicle by using the CPD antenna. Wherein, exemplarily, the above-mentioned target detection range can be the cabin range of the target vehicle, or other range size determined based on the cabin range, and the embodiments of the present application are not limited.

[0043] It can be seen that the optional embodiment can determine the signal detection coverage requirement of the CPD antenna on the vehicle according to the cabin data and the installation position of the CPD antenna on the vehicle, calculate the antenna unit parameter required for setting the CPD antenna on the vehicle according to the signal coverage requirement, and calculate the signal overflow control requirement of the CPD antenna on the vehicle according to the cabin data and the antenna unit parameter. The determination accuracy of the signal coverage requirement can be improved by analyzing the layout in the vehicle cabin, and the determination accuracy of the signal overflow control requirement can be improved on the basis of determining the antenna unit parameter that meets the signal coverage requirement, thereby improving the adaptation degree of the target signal coverage requirement and the actual cabin layout of the target vehicle, and further improving the determination accuracy of the target signal coverage requirement, thereby being beneficial to further improving the design rationality and design accuracy of the CPD antenna.

[0044] In the optional embodiment, optionally, each window component can be one of a front windshield window, a rear windshield window, a left window, and a right window.

[0045] Optionally, the one or more left vehicle windows and / or the one or more right vehicle windows are arranged in the target vehicle.

[0046] Optionally, the all-vehicle components further include at least one row of footwell areas of the target vehicle and / or at least one row of seat areas of the target vehicle; each row of footwell areas includes a left footwell area and / or a right footwell area; each row of seat areas includes a left seat area and / or a right seat area.

[0047] Optionally, the footwell area is a front row footwell area, and the seat area is a rear row seat area.

[0048] It can be seen that the optional embodiment can obtain the cabin data of various window components and various vehicle components other than the window components, can improve the analysis accuracy of the interior layout of the vehicle cabin, thereby facilitating the analysis accuracy of the subsequent signal coverage and overflow control requirements of the CPD antenna, and further facilitating the design rationality and design accuracy of the CPD antenna.

[0049] In the optional embodiment, optionally, according to the cabin data and the installation position, determining the signal coverage requirement of the CPD antenna in the target vehicle can include the following operations: According to the cabin data and the installation position, determining a distance information set corresponding to the installation position; the distance information set includes a plurality of distance information, and each distance information is the distance information between the CPD antenna and one of the vehicle components; According to the installation position and the distance information set, calculating the signal coverage angle data of the CPD antenna in the target vehicle with respect to the preset vehicle body direction based on a preset coverage angle calculation formula; the preset vehicle body direction includes a vehicle length direction and / or a vehicle width direction; the signal coverage angle data includes signal angle data of the CPD antenna with respect to the plurality of vehicle components. Optionally, the signal coverage requirement includes the signal coverage angle data.

[0050] In the distance information set, for example, the distance information set in the vehicle length direction and the distance information set in the vehicle width direction are included, and the embodiments of the present application are not limited thereto. Further, the first distance information set can include the distance between the CPD antenna and the lower edge of the front windshield, the distance between the CPD antenna and the lower edge of the rear windshield, the distance between the CPD antenna and the front footwell area, the distance between the CPD antenna and the rear seat area, and the distance between the CPD antenna and the rear seat area in the first target coordinate axis, and the embodiments of the present application are not limited thereto. Further, the second distance information set can include the distance between the CPD antenna and the lower edge of the left window, the distance between the CPD antenna and the lower edge of the right window, the distance between the CPD antenna and the lower edge of the left footwell area, the distance between the CPD antenna and the lower edge of the right footwell area, and the distance between the CPD antenna and the left / right footwell area in the second target coordinate axis, and the embodiments of the present application are not limited thereto.

[0051] In the signal coverage angle data, for example, the first signal coverage angle data corresponding to the vehicle length direction and the second signal coverage angle data corresponding to the vehicle width direction are included, and the embodiments of the present application are not limited thereto. Further, the first signal coverage angle data can include the signal angle data of the CPD antenna with respect to the front windshield, the signal angle data of the CPD antenna with respect to the rear windshield, the signal angle data of the CPD antenna with respect to the front footwell area, and the signal angle data of the CPD antenna with respect to the rear seat area, and the embodiments of the present application are not limited thereto. Further, the second signal coverage angle data can include the signal angle data of the CPD antenna with respect to the left window, the signal angle data of the CPD antenna with respect to the right window, the signal angle data of the CPD antenna with respect to the left footwell area, and the signal angle data of the CPD antenna with respect to the right footwell, and the embodiments of the present application are not limited thereto.

[0052] Please refer to Figure 3 , Figure 3 is a vehicle cabin layout schematic diagram of another CPD antenna design method disclosed by the embodiments of the present application, and Figure 3 is a vehicle cabin layout schematic diagram with respect to the vehicle width direction. As shown in Figure 3 , Figure 3 , CPD in the formula represents the installation position of the CPD antenna on the target vehicle, Figure 4 , A is the lower edge position of the left window, B is the lower edge position of the right window, C is the lower edge position of the left footwell area, and D is the lower edge position of the right footwell area. Further, the coverage angle calculation formula with respect to the vehicle width direction can include the following formula: The coverage angle calculation formula of the CPD antenna with respect to the left window: ; The coverage angle calculation formula of the CPD antenna with respect to the right window: ; The formula for calculating the coverage angle of the CPD antenna with respect to the left footwell area is: ; The formula for calculating the coverage angle of the CPD antenna with respect to the right footwell area is: ; In the formula, the signal angle data of the CPD antenna with respect to the left window, signal angle data of the CPD antenna with respect to the right window, signal angle data of the CPD antenna with respect to the left footwell area, signal angle data of the CPD antenna with respect to the right footwell area, O is the installation position of the CPD antenna on the target vehicle, and E is the directly below projection point corresponding to the CPD that is not marked in the figure. Figure 3 is the distance between the CPD antenna and the left window, is the distance between the CPD antenna and the right window, is the distance between the CPD antenna and the left footwell area, is the distance between the CPD antenna and the right footwell area, is the distance between point O and line segment AB, is the distance between line segment AB and line segment CD.

[0053] Optionally, please refer to Figure 4 , Figure 4 is a vehicle cabin layout schematic diagram of a CPD antenna design method disclosed in an embodiment of the present application, and Figure 4 is a schematic diagram of the vehicle cabin layout with respect to the vehicle length direction. As shown in Figure 4 , Figure 4 CPD in the figure represents the installation position of the CPD antenna on the target vehicle, Figure 4 F in the figure is the lower edge position of the front windshield window, G is the lower edge position of the rear windshield window, H is the front footwell area position, and I is the rear seat area position. Further, the formula for calculating the coverage angle with respect to the vehicle length direction can include the following formulae: The formula for calculating the coverage angle of the CPD antenna with respect to the front windshield is: ; The formula for calculating the coverage angle of the CPD antenna with respect to the rear windshield is: ; The formula for calculating the coverage angle of the CPD antenna with respect to the front footwell area is: ; The formula for calculating the coverage angle of the CPD antenna with respect to the rear seat area is:​ ; wherein, in the formula, is signal angle data of the CPD antenna about the front windshield, is signal angle data of the CPD antenna about the rear windshield, is signal angle data of the CPD antenna about the front row footwell area, is signal angle data of the CPD antenna about the rear row seat area, and J point is a directly below projection point corresponding to the CPD not marked in the figure, Figure 4 is a distance between the CPD antenna and the front windshield, is a distance between the CPD antenna and the rear windshield, is a distance between the CPD antenna and the rear row seat area, is a distance between the O point and the line segment FG, is a distance between the line segment FG and the I point.

[0054] It can be seen that the optional embodiment can determine the distance information between the CPD antenna installation position and different vehicle components according to the vehicle cabin data and the installation position, and calculate the signal coverage angle data of the CPD antenna about the vehicle length direction and / or the vehicle width direction of the target vehicle based on the coverage angle calculation formula and according to the installation position and the distance information set, which can improve the analysis accuracy of the spatial relationship between the CPD antenna and other vehicle components, thereby improving the analysis accuracy of the required coverage angle of the antenna signal of the CPD antenna, and further improving the determination accuracy of the signal coverage requirement corresponding to the CPD antenna, thereby being conducive to improving the comprehensiveness and accuracy of the detection range of the configured CPD antenna, and further being conducive to improving the detection accuracy of the CPD antenna.

[0055] In the optional embodiment, according to the signal coverage requirement, determining the required antenna element parameters of the CPD antenna under the condition of meeting the signal coverage requirement can include the following operations: obtaining preset parameters corresponding to the required antenna element of the CPD antenna; the preset parameters include beam width about a preset direction under a plurality of lobe widths; obtaining a preset coverage gain difference threshold value matched with the target vehicle; the coverage gain difference threshold value is a maximum gain difference value corresponding to the preset parameters of the CPD antenna and the determined maximum coverage angle data; the maximum coverage angle data includes angle data with the largest value in the signal coverage angle data in the vehicle length direction and / or the vehicle width direction; determining the required first antenna element quantity in the vehicle length direction and the required second antenna element quantity in the vehicle width direction according to the preset parameters, the signal coverage angle data and the coverage gain difference threshold value.​ According to the first antenna unit quantity and the second antenna unit quantity, the antenna array parameter corresponding to the CPD antenna is determined as the antenna unit parameter required by the CPD antenna under the condition of meeting the signal coverage requirement.

[0056] Among them, the preset parameter corresponding to the antenna unit required by the CPD antenna can refer to Figure 5 , Figure 5 is a schematic diagram of the principle of a CPD antenna design method disclosed by an embodiment of the present application, wherein, as Figure 5 indicated, Figure 5 It is recorded that the beam width corresponding to the antenna array under the-3dB lobe width, the-6dB lobe width and the-10dB lobe width of the two antenna units, the three antenna units and the four antenna units respectively, and the present application embodiment is not limited.

[0057] Among them, the coverage maximum angle data can include the first coverage maximum angle data (such as: 92°) of the target vehicle in the vehicle length direction and / or the second coverage maximum angle data (such as: 46.7°) of the target vehicle in the vehicle width direction; further, if the coverage angle of one antenna unit in the vehicle length direction can be 90°, only one column of antenna units is required in the vehicle length direction; refer to Figure 5 indicated data, combined with the pre-set coverage gain difference threshold, three antenna units can be selected in the vehicle width direction to reach 40.4° under the-3dB lobe width, or four antenna units can be selected to reach 50° under the-6dB lobe width, so three or four antenna units can be selected in the vehicle width direction.

[0058] Among them, the antenna array parameter corresponding to the CPD antenna can be a 1x3 antenna array, and the present application embodiment is not limited.

[0059] Among them, refer to Figure 6 , Figure 6 is a structural schematic diagram of a CPD antenna disclosed by an embodiment of the present application. As Figure 6As shown, when the CPD antenna is a 1x3 antenna array, the CPD antenna module can include two 1x3 antenna arrays, one of which is used as a receiving antenna array and the other of which is used as a transmitting antenna array, and the CPD antenna module can include a receiving antenna array 501 and a transmitting antenna array 502, for example, without limitation of the embodiments of the present application. Further, each 1x3 antenna array includes three antenna elements, and the receiving antenna array 501 can include receiving antenna elements 5011-5013, one end of the receiving antenna element 5011, one end of the receiving antenna element 5012, and one end of the receiving antenna element 5013 are connected, and the transmitting antenna array 502 can include transmitting antenna elements 5021-5023, one end of the transmitting antenna element 5021, one end of the transmitting antenna element 5022, and one end of the transmitting antenna element 5023 are connected. Further, each receiving antenna element corresponds to a transmitting antenna element, and the receiving antenna element 5011 can correspond to the transmitting antenna element 5021, for example, without limitation of the embodiments of the present application.

[0060] For example, refer to Figure 7 , Figure 7 is another structure diagram of a CPD antenna disclosed by the embodiments of the present application. As shown in Figure 7 , when the CPD antenna is a 1x4 antenna array, the CPD antenna module can include two 1x4 antenna arrays, one of which is used as a receiving antenna array and the other of which is used as a transmitting antenna array, and the CPD antenna module can include a receiving antenna array 601 and a transmitting antenna array 602, for example, without limitation of the embodiments of the present application. Further, each 1x4 antenna array includes four antenna elements, and the receiving antenna array 601 can include receiving antenna elements 6011-6014, one end of the receiving antenna element 6011 and one end of the receiving antenna element 6012 are connected and the connection point is a first connection point, one end of the receiving antenna element 6013 and one end of the receiving antenna element 6014 are connected and the connection point is a second connection point, and the first connection point and the second connection point are connected, and the transmitting antenna array 602 can include transmitting antenna elements 6021-6024, one end of the transmitting antenna element 6021 and one end of the transmitting antenna element 6022 are connected and the connection point is a third connection point, and one end of the transmitting antenna element 6023 and one end of the transmitting antenna element 6024 are connected and the connection point is a fourth connection point. Further, each receiving antenna element corresponds to a transmitting antenna element, and the receiving antenna element 6011 can correspond to the transmitting antenna element 6021, for example, without limitation of the embodiments of the present application.

[0061] It can be seen that the optional embodiment can also determine the number of antenna units required in the vehicle length direction and the vehicle width direction according to the acquired preset parameters corresponding to the antenna units, the signal coverage angle data, and the pre-set coverage gain difference threshold, and determine the CPD antenna array parameters based on the number of antenna units as the antenna unit parameters. In the process of calculating the required number of antenna units, the beam width of the antenna units under different lobe widths, the angle data required for the CPD antenna signal to be covered calculated in the foregoing step, and the pre-set gain difference threshold are comprehensively considered, which can improve the calculation accuracy of the number of antenna units, thereby facilitating the improvement of the determination accuracy of the antenna unit parameters, and further facilitating the improvement of the matching degree of the designed CPD antenna and the vehicle demand and vehicle situation, thereby facilitating the improvement of the design accuracy of the CPD antenna, and further facilitating the improvement of the detection accuracy of the CPD antenna.

[0062] In the optional embodiment, the signal overflow control demand of the CPD antenna on the target vehicle is determined according to the vehicle cabin data and the antenna unit parameters, including: acquiring an initial component gain corresponding to each vehicle component; calculating, based on a pre-set vehicle interior gain difference calculation formula, an estimated component gain difference corresponding to each vehicle component according to the vehicle cabin data, the antenna unit parameters, and the initial component gain corresponding to each vehicle component; the estimated component gain difference corresponding to each vehicle component is a gain difference between the overflow critical point corresponding to the vehicle component and the coverage critical point corresponding to the vehicle component; determining, according to the estimated component gain difference corresponding to each vehicle component, a component gain difference threshold corresponding to the vehicle component as an overflow gain difference threshold corresponding to the vehicle component; the component gain difference threshold corresponding to each vehicle component is a gain difference threshold between the overflow critical point corresponding to the vehicle component and the coverage critical point corresponding to the vehicle component, and the component gain difference threshold corresponding to each vehicle component is greater than or equal to the estimated component gain difference corresponding to the vehicle component.

[0063] Among them, the signal overflow control demand of the CPD antenna on the target vehicle includes the overflow gain difference threshold corresponding to each vehicle component.

[0064] Among them, the initial component gain corresponding to each vehicle component is the gain of the CPD antenna on the vehicle component at a pre-set initial time.

[0065] Optionally, the overflow threshold for each window component can be the window component itself, and the coverage threshold for each window component can be the area below the window component. This embodiment of the invention does not impose any limitations. For example, taking the left window as an example, the overflow threshold for the left window is the left window itself, and the coverage threshold for the left window is the left footwell area. Similarly, taking the right window as an example, the overflow threshold for the right window is the right window itself, and the coverage threshold for the right window is the right footwell area. Taking the front windshield as an example, the overflow threshold for the front windshield is the front windshield itself, and the coverage threshold for the front windshield is the front footwell area. Taking the rear windshield as an example, the overflow threshold for the rear windshield is the rear windshield itself, and the coverage threshold for the rear windshield is the front seat area. This embodiment of the invention does not impose any limitations.

[0066] Optionally, the estimated component gain difference for each window component can be calculated using the following in-vehicle gain difference calculation formula:

[0067] Among them, for example, combined Figure 3 The layout diagram shown above, taking the left window as an example, can be further illustrated by the following formula: ; Wherein, in the formula This refers to the gain difference between the left window and the left footwell area, which is also the estimated component gain difference corresponding to the left window. The initial component gain corresponding to the left foot pit region. The initial component gain corresponding to the left window. The path loss is the difference between the spatial attenuation between the CPD antenna and the left foot pit area.

[0068] Wherein, the component gain difference threshold corresponding to each window component is the gain difference threshold between the overflow threshold and the coverage threshold corresponding to that window component, and the component gain difference threshold corresponding to each window component is greater than or equal to the estimated component gain difference corresponding to that window component; for example, if the above is calculated If the gain difference is 20.18dB, then the threshold value for the gain difference of the component corresponding to the left window is... It needs to be set to a value greater than or equal to 20.18dB, but this embodiment of the invention does not impose a limitation.

[0069] It can be seen that the optional embodiment can also calculate the estimated component gain difference of each window component based on the preset vehicle interior gain difference calculation formula, the vehicle cabin data, the antenna unit parameters and the initial component gain corresponding to each vehicle component, and determine the component gain difference threshold of the window component as the corresponding overflow gain difference threshold based on the estimated component gain difference. By calculating the gain difference threshold between the overflow critical point and the coverage critical point corresponding to each window component, the calculation accuracy of the overflow gain difference threshold corresponding to each window component can be improved, the determination accuracy of the signal overflow control requirement of the CPD antenna can be improved, and the signal overflow of the CPD antenna can be more accurately controlled, thereby further improving the design accuracy of the CPD antenna, and further improving the detection accuracy of the CPD antenna.

[0070] Embodiment two Please refer to Figure 2 , Figure 2 is a flowchart of a CPD antenna design method disclosed by the embodiment of the application. Wherein, Figure 2 The CPD antenna design method described can be applied to a CPD antenna design device, which can include one of a smart device, a smart terminal, a smart system and a server, wherein the server can be a local server or a cloud server, and the embodiment of the application does not limit it; further, the device can be applied to a smart vehicle, and the smart vehicle has a CPD (Child Presence Detection, child left detection) detection requirement, and the embodiment of the application does not limit it. As Figure 2 shown, the CPD antenna design method can include the following operations: 201. Determine the antenna configuration parameters of the CPD antenna in the target vehicle according to the determined antenna unit parameters and signal overflow control requirements of the CPD antenna.

[0071] In the embodiment of the application, the antenna configuration parameters are used to configure the CPD antenna that meets the signal coverage requirement and the signal overflow control requirement.

[0072] 202. Configure the CPD antenna corresponding to the target vehicle according to the antenna configuration parameters.

[0073] In the embodiment of the application, the overflow gain difference threshold corresponding to any window component in the target vehicle of the configured CPD antenna is less than or equal to the determined target gain difference threshold.

[0074] In the embodiment of the application, for other detailed description of steps 201-202, please refer to the detailed description of step 101 in embodiment one, and the embodiment of the application will not be repeated here.

[0075] It can be seen that the method described in the embodiment of the present application can configure the CPD antenna required by the target vehicle according to the determined target signal coverage requirement, so that the CPD antenna has an overflow gain difference threshold value for any window component that is less than or equal to the target gain difference threshold value, thereby enabling the configured CPD antenna to precisely control the CPD antenna energy overflow while meeting the target signal coverage requirement, thereby improving the design rationality of the CPD antenna, making the designed CPD antenna more consistent with the vehicle cabin design, thereby facilitating the improvement of the detection accuracy of the CPD antenna in the vehicle, and further facilitating the improvement of the accuracy of the CPD detection result, and further facilitating the timely detection of abnormalities in the vehicle to reduce the occurrence of safety accidents in the vehicle, and further facilitating the improvement of the safety of the vehicle interior. In addition, the corresponding CPD antenna configuration parameters can be determined by combining the antenna element parameters and the signal overflow control requirement, so that the configured CPD antenna can meet both the signal coverage requirement and the signal overflow control requirement, thereby improving the configuration accuracy of the CPD antenna on the basis of improving the determination accuracy of the CPD antenna configuration parameters, and further facilitating the further improvement of the design rationality of the CPD antenna, and further facilitating the further improvement of the detection accuracy of the CPD antenna.

[0076] In an optional embodiment, determining the antenna configuration parameters of the CPD antenna in the target vehicle according to the determined antenna element parameters required by the CPD antenna and the signal overflow control requirement can include the following operations: determining whether any overflow gain difference threshold value in the signal overflow control requirement is greater than or equal to the determined target gain difference threshold value; when it is determined that there is at least one overflow gain difference threshold value in the signal overflow control requirement that is greater than or equal to the target gain difference threshold value, determining the power divider parameters corresponding to the signal overflow control requirement; the power divider parameters are used to configure the power divider required by the CPD antenna in the target vehicle to adjust the sidelobe width of the antenna element of the CPD antenna through the power divider; and the antenna element parameters and the power divider parameters are determined as the antenna configuration parameters of the CPD antenna in the target vehicle; when it is determined that there is no overflow gain difference threshold value in the signal overflow control requirement that is greater than or equal to the target gain difference threshold value, the antenna element parameters are determined as the antenna configuration parameters of the CPD antenna in the target vehicle.

[0077] wherein the overflow gain difference threshold value corresponding to each window component included in the signal overflow control requirement can be determined by the method of embodiment one.

[0078] Further, determining whether any overflow gain difference threshold value in the signal overflow control requirement is greater than or equal to the determined target gain difference threshold value can be specifically: For each vehicle window component, it is judged whether the spill-over gain difference threshold corresponding to the vehicle window component is greater than or equal to the target gain difference threshold corresponding to the vehicle window component.

[0079] Wherein, by adjusting the sidelobe width corresponding to the antenna unit of the CPD antenna through the power divider, the signal energy spill-over situation of the CPD antenna on the target vehicle can be controlled.

[0080] It can be seen that, if it is judged that at least one of the spill-over gain difference thresholds in the signal spill-over control requirement is greater than or equal to the target gain difference threshold, the current required power divider parameter is determined, the sidelobe width corresponding to the antenna unit of the CPD antenna is adjusted through the power divider, so that the gain value of the CPD antenna under the coverage angle corresponding to the vehicle window is small enough, and the antenna unit parameter and the power divider parameter are determined as the antenna configuration parameter of the CPD antenna, which can improve the adjustment flexibility and accuracy of the signal spill-over situation of the CPD antenna, thereby improving the determination accuracy of the configuration parameter of the CPD antenna, and further improving the design accuracy of the CPD antenna, thereby facilitating the improvement of the detection accuracy of the CPD antenna; and if it is judged that all the spill-over gain difference thresholds in the signal spill-over control requirement are less than the target gain difference threshold, the antenna unit parameter is directly determined as the antenna configuration parameter of the CPD antenna, which can improve the determination efficiency of the configuration parameter of the CPD antenna, and is beneficial to improving the configuration efficiency of the CPD antenna.

[0081] In this optional embodiment, optionally, determining the power divider parameter corresponding to the signal spill-over control requirement can include the following operations: Obtaining a plurality of candidate power divider parameters; each candidate power divider parameter includes an antenna power ratio; Testing the adjusted gain difference corresponding to each vehicle window component under each candidate power divider parameter based on the power divider corresponding to each candidate power divider parameter; For each candidate power divider parameter, it is judged whether all the adjusted gain differences corresponding to the candidate power divider parameter are less than the target gain difference threshold; For each candidate power divider parameter, when it is judged that all the adjusted gain differences corresponding to the candidate power divider parameter are less than the target gain difference threshold, the candidate power divider parameter is determined as the power divider parameter corresponding to the signal spill-over control requirement.

[0082] Optionally, each candidate power divider parameter can further include a gain difference influence value corresponding to the antenna power ratio, which is not limited by the embodiments of the present application.

[0083] Wherein, the candidate power divider parameter can refer to Figure 8 , Figure 8 is a principle schematic diagram of another CPD antenna design method disclosed by the embodiments of the present application, wherein, as Figure 8As shown, the antenna power ratio of the power divider is 1:1:1:1, that is, the gain difference influence value corresponding to the power divider with equal antenna power is 13, and the gain difference influence value corresponding to the power divider with the antenna power ratio of 1:3:3:1 is 16, which is not limited in the embodiment of the application.

[0084] Optionally, based on the power divider corresponding to each candidate power divider parameter, the adjustment gain difference corresponding to each vehicle window component under the candidate power divider parameter is tested, which can be specifically: using the power divider with different antenna power ratios, testing the gain difference change value between the overflow critical point corresponding to each vehicle window component and the coverage critical point corresponding to the vehicle window component under the antenna power ratio, as the adjustment gain difference corresponding to the vehicle window component, which is not limited in the embodiment of the application.

[0085] It can be seen that the optional embodiment can also test the adjustment gain difference corresponding to each vehicle window component under the candidate power divider parameter based on the power divider corresponding to different candidate power divider parameters. If it is judged that all the adjustment gain differences corresponding to any candidate power divider parameter are less than the target gain difference threshold, the candidate power divider parameter is determined as the power divider parameter corresponding to the signal overflow control requirement. The test efficiency and test accuracy of the power divider with different antenna power ratios in the current CPD antenna application scene can be improved, thereby improving the test efficiency of the gain difference influence of the power divider with different antenna power ratios on different vehicle window components, and further facilitating the determination of the power divider parameter most meeting the signal overflow control requirement, improving the determination accuracy of the power divider parameter, and further facilitating the determination accuracy of the configuration parameter of the CPD antenna.

[0086] In the embodiment of the application, the flow of the CPD antenna design method can be referred to Figure 9 , Figure 9 is a flow diagram of another CPD antenna design method disclosed in the embodiment of the application. As shown in Figure 9 , the method can include the following flow: First, the installation position of the CPD antenna on the vehicle body is determined, then the angle data that needs to be covered by the CPD antenna (that is, the above-mentioned signal coverage requirement) and the angle data that needs to be controlled to overflow (that is, the above-mentioned signal overflow control requirement) are calculated, and then the number N of units required for the CPD antenna in the vehicle is back calculated using the coverage angle data, and the gain difference threshold between the coverage edge and the energy overflow corresponding to the CPD antenna is set. If it is determined that the gain difference threshold exceeds the preset value, the side lobe of the CPD antenna needs to be fine-tuned by debugging the non-equal power divider to control the energy overflow of the CPD antenna, which is not limited in the embodiment of the application.

[0087] Embodiment three Please refer to Figure 10 , Figure 10Fig. 1 is a structural schematic diagram of a CPD antenna design device disclosed by an embodiment of the present application. In Fig. 1, Figure 10 The CPD antenna design device described can include one of a smart device, a smart terminal, a smart system and a server, wherein the server can be a local server or a cloud server, and the embodiment of the present application does not make any limitation; further, the device can be applied to a smart vehicle, and the smart vehicle has a CPD (Child Presence Detection, child left detection) detection requirement, and the embodiment of the present application does not make any limitation. As shown in Fig. 1, Figure 10 The CPD antenna design device can include the following components: A configuration module 301 is configured to configure a CPD antenna corresponding to a target vehicle according to a determined target signal coverage requirement. The CPD antenna after the configuration has an overflow gain difference threshold value for any window component in the target vehicle, which is less than or equal to the determined target gain difference threshold value.

[0088] It can be seen that the device described in the embodiment of the present application can configure the CPD antenna required by the target vehicle according to the determined target signal coverage requirement, so that the overflow gain difference threshold value of the CPD antenna for any window component is less than or equal to the target gain difference threshold value, thereby enabling the configured CPD antenna to accurately control the energy overflow while meeting the target signal coverage requirement, thereby improving the design rationality of the CPD antenna, making the designed CPD antenna more in line with the cabin design of the vehicle itself, thereby facilitating the improvement of the detection accuracy of the CPD antenna in the vehicle, and further facilitating the improvement of the accuracy of the CPD detection result, and further facilitating the timely detection of the abnormality in the vehicle, thereby reducing the occurrence of safety accidents in the vehicle, and further facilitating the improvement of the safety of the vehicle interior.

[0089] In an optional embodiment, the target gain difference threshold value is greater than or equal to 15 dB and less than 30 dB.

[0090] It can be seen that the device described in the optional embodiment can also more accurately control the energy overflow of the CPD antenna by limiting the numerical range of the target gain difference threshold value to 15 dB-30 dB, thereby facilitating the more accurate configuration of the CPD antenna, and further facilitating the further improvement of the design rationality of the CPD antenna.

[0091] In the optional embodiment, optionally, the target gain difference threshold value is determined in the following manner: For each window component, the target gain difference threshold value of the CPD antenna for the window component is determined according to the positional relationship between the CPD antenna and the window component.

[0092] It can be seen that the apparatus described in the optional embodiment can also determine the target gain difference threshold of the CPD antenna for the vehicle window component by analyzing the positional relationship between the CPD antenna and each vehicle window component, and can achieve differentiated determination of the target gain difference threshold, thereby facilitating improvement of the determination flexibility and accuracy of the target gain difference threshold corresponding to each vehicle window component, and further facilitating further improvement of the control accuracy of the energy overflow of the CPD antenna.

[0093] In another optional embodiment, the target signal coverage requirement comprises a signal coverage requirement and a signal overflow control requirement; And the target signal coverage requirement is determined in the following manner: determining the cabin data of the target vehicle and the installation position of the CPD antenna on the target vehicle; the cabin data comprises positional information corresponding to a plurality of vehicle components in the target vehicle; all the vehicle components at least comprise all the vehicle window components; the distance between the installation position and the central position of the cabin of the target vehicle is less than a preset distance threshold; determining the signal coverage requirement of the CPD antenna on the target vehicle according to the cabin data and the installation position; determining the signal overflow control requirement of the CPD antenna on the target vehicle according to the cabin data and the antenna unit parameter.

[0094] It can be seen that the apparatus described in the optional embodiment can also determine the detection signal coverage requirement of the CPD antenna on the vehicle according to the cabin data and the installation position of the CPD antenna on the vehicle, and can further calculate the antenna unit parameter required for setting the CPD antenna on the vehicle according to the signal coverage requirement, and can further calculate the signal overflow control requirement corresponding to the CPD antenna on the vehicle according to the cabin data and the antenna unit parameter, thereby improving the determination accuracy of the signal coverage requirement by analyzing the layout in the cabin, and improving the determination accuracy of the signal overflow control requirement on the basis of determining the antenna unit parameter that meets the signal coverage requirement, thereby improving the adaptation degree of the target signal coverage requirement to the actual cabin layout of the target vehicle, and further improving the determination accuracy of the target signal coverage requirement, and further facilitating further improvement of the design rationality and design accuracy of the CPD antenna.

[0095] In this optional embodiment, optionally, each vehicle window component is one of a front windshield, a rear windshield, a left window, and a right window; And all the vehicle components further comprise at least one row of footwell areas of the target vehicle and / or at least one row of seat areas of the target vehicle; wherein each row of footwell areas comprises a left footwell area and / or a right footwell area; and each row of seat areas comprises a left seat area and / or a right seat area.

[0096] It can be seen that the device described in the optional embodiment can obtain the cabin data of various vehicle window components and various vehicle components other than the vehicle window components, can improve the analysis accuracy of the layout of the cabin of the vehicle, thereby facilitating the improvement of the analysis accuracy of the subsequent signal coverage and overflow control requirements of the CPD antenna, and thereby facilitating the improvement of the design rationality and design accuracy of the CPD antenna.

[0097] In another optional embodiment, a specific manner of determining the signal coverage requirement of the CPD antenna on the target vehicle according to the cabin data and the installation position can include: determining a distance information set corresponding to the installation position according to the cabin data and the installation position; the distance information set includes a plurality of distance information, and each distance information is distance information between the CPD antenna and one of the vehicle components; calculating signal coverage angle data of the CPD antenna on the target vehicle with respect to a preset vehicle body direction according to the installation position and the distance information set based on a preset coverage angle calculation formula; the preset vehicle body direction includes a vehicle length direction and / or a vehicle width direction; the signal coverage angle data includes signal angle data of the CPD antenna with respect to the plurality of vehicle components; wherein the signal coverage requirement includes the signal coverage angle data.

[0098] It can be seen that the device described in the optional embodiment can determine the distance information between the installation position of the CPD antenna and different vehicle components according to the cabin data and the installation position, and then calculate the signal coverage angle data of the CPD antenna on the target vehicle with respect to the vehicle length direction and / or the vehicle width direction based on the coverage angle calculation formula and according to the installation position and the distance information set, which can improve the analysis accuracy of the spatial relationship between the CPD antenna and other vehicle components, thereby improving the analysis accuracy of the required coverage angle of the antenna signal of the CPD antenna, and thereby improving the determination accuracy of the signal coverage requirement of the CPD antenna, and thereby facilitating the improvement of the comprehensiveness and accuracy of the detection range of the configured CPD antenna, and thereby facilitating the detection accuracy of the CPD antenna.

[0099] In this optional embodiment, optionally, a specific manner of determining the antenna element parameters required for setting the CPD antenna to meet the signal coverage requirement according to the signal coverage requirement can include: obtaining preset parameters corresponding to the required antenna elements of the CPD antenna; the preset parameters include beam widths with respect to the preset vehicle body direction under a plurality of lobe widths; obtaining a preset coverage gain difference threshold matched with the target vehicle; the coverage gain difference threshold is a maximum gain difference value corresponding to a preset parameter of the CPD antenna and the determined coverage maximum angle data; the coverage maximum angle data includes angle data with maximum values in the length direction and / or the width direction of the vehicle in the signal coverage angle data; determining the first antenna unit quantity required in the length direction and the second antenna unit quantity required in the width direction according to the preset parameter, the signal coverage angle data and the coverage gain difference threshold; determining the antenna array parameter corresponding to the CPD antenna as the antenna unit parameter required by the CPD antenna in the case of meeting the signal coverage requirement according to the first antenna unit quantity and the second antenna unit quantity.

[0100] It can be seen that the device described in the optional embodiment can also determine the antenna unit quantity required in the length direction and the width direction according to the obtained preset parameter of the antenna unit, the signal coverage angle data and the preset coverage gain difference threshold, and determine the CPD antenna array parameter as the antenna unit parameter based on the antenna unit quantity, which can comprehensively consider the beam width of the antenna unit under different lobe widths, the angle data required to be covered by the CPD antenna signal calculated in the foregoing step and the preset gain difference threshold in the process of calculating the required antenna unit quantity, improve the calculation accuracy of the antenna unit quantity, thereby facilitating the determination accuracy of the antenna unit parameter, and further facilitating the matching degree of the designed CPD antenna and the vehicle requirement and the vehicle condition, thereby facilitating the design accuracy of the CPD antenna, and further facilitating the detection accuracy of the CPD antenna.

[0101] In an optional embodiment, the configuration module 301 can determine the specific manner of the CPD antenna in the signal overflow control requirement of the target vehicle according to the vehicle cabin data and the antenna unit parameter, which can include: obtaining an initial component gain corresponding to each vehicle component; calculating an estimated component gain difference corresponding to each vehicle component based on a preset in-vehicle gain difference calculation formula, the vehicle cabin data, the antenna unit parameter and the initial component gain corresponding to each vehicle component; the estimated component gain difference corresponding to each vehicle component is a gain difference between the overflow critical point corresponding to the vehicle component and the coverage critical point corresponding to the vehicle component; According to the estimated part gain difference corresponding to each vehicle window part, a part gain difference threshold corresponding to the vehicle window part is determined as an overflow gain difference threshold corresponding to the vehicle window part; the part gain difference threshold corresponding to each vehicle window part is a gain difference threshold between the overflow critical point corresponding to the vehicle window part and the coverage critical point corresponding to the vehicle window part, and the part gain difference threshold corresponding to each vehicle window part is greater than or equal to the estimated part gain difference corresponding to the vehicle window part. The signal overflow control requirement of the CPD antenna on the target vehicle includes the overflow gain difference threshold corresponding to each vehicle window part.

[0102] It can be seen that the device described in the optional embodiment can calculate the estimated part gain difference corresponding to each vehicle window part based on the preset in-vehicle gain difference calculation formula, according to the cabin data, the antenna unit parameters, and the initial part gain corresponding to each vehicle part, and determine the part gain difference threshold corresponding to the vehicle window part as the corresponding overflow gain difference threshold based on the estimated part gain difference, improve the calculation accuracy of the overflow gain difference threshold corresponding to each vehicle window part by calculating the gain difference threshold between the overflow critical point and the coverage critical point corresponding to the vehicle window part, thereby improving the determination accuracy of the signal overflow control requirement of the CPD antenna, and further facilitating more accurate control of the signal overflow of the CPD antenna, thereby further improving the design accuracy of the CPD antenna, and further improving the detection accuracy of the CPD antenna.

[0103] In another optional embodiment, the configuration module 301 configures the specific mode of the CPD antenna corresponding to the target vehicle according to the determined target signal coverage requirement, which can include: According to the determined antenna unit parameters and signal overflow control requirement required by the CPD antenna, antenna configuration parameters of the CPD antenna on the target vehicle are determined; the antenna configuration parameters are used to configure the CPD antenna that meets the signal coverage requirement and the signal overflow control requirement; According to the antenna configuration parameters, the CPD antenna corresponding to the target vehicle is configured.

[0104] It can be seen that the device described in the optional embodiment can determine the corresponding CPD antenna configuration parameters in combination with the antenna unit parameters and the signal overflow control requirement, so that the configured CPD antenna can meet both the signal coverage requirement and the signal overflow control requirement, thereby improving the configuration accuracy of the CPD antenna on the basis of improving the determination accuracy of the CPD antenna configuration parameters, and further facilitating further improvement of the design rationality of the CPD antenna, and further facilitating further improvement of the detection accuracy of the CPD antenna.

[0105] In the optional embodiment, optionally, the configuration module 301 determines the specific manner of determining the antenna configuration parameters of the CPD antenna in the target vehicle according to the determined antenna element parameters and signal overflow control requirements of the CPD antenna, which can include: determining whether any overflow gain difference threshold in the signal overflow control requirements is greater than or equal to the determined target gain difference threshold; when it is determined that at least one overflow gain difference threshold in the signal overflow control requirements is greater than or equal to the target gain difference threshold, determining the power divider parameters corresponding to the signal overflow control requirements; the power divider parameters are used to configure the power divider required by the CPD antenna in the target vehicle to adjust the sidelobe width corresponding to the antenna element of the CPD antenna through the power divider; and the antenna element parameters and the power divider parameters are determined as the antenna configuration parameters of the CPD antenna in the target vehicle; when it is determined that there is no overflow gain difference threshold in the signal overflow control requirements that is greater than or equal to the target gain difference threshold, the antenna element parameters are determined as the antenna configuration parameters of the CPD antenna in the target vehicle.

[0106] It can be seen that the device described in the optional embodiment can also determine the currently required power divider parameters to adjust the sidelobe width corresponding to the antenna element of the CPD antenna through the power divider to make the gain value of the CPD antenna under the coverage angle corresponding to the vehicle window small enough and determine the antenna element parameters and the power divider parameters as the antenna configuration parameters of the CPD antenna if it is determined that at least one overflow gain difference threshold in the signal overflow control requirements is greater than or equal to the target gain difference threshold, which can improve the adjustment flexibility and accuracy of the signal overflow of the CPD antenna, thereby improving the determination accuracy of the configuration parameters of the CPD antenna, and further improving the design accuracy of the CPD antenna, thereby facilitating the improvement of the detection accuracy of the CPD antenna; and the antenna element parameters are directly determined as the antenna configuration parameters of the CPD antenna if it is determined that all the overflow gain difference thresholds in the signal overflow control requirements are less than the target gain difference threshold, which can improve the determination efficiency of the configuration parameters of the CPD antenna and facilitate the improvement of the configuration efficiency of the CPD antenna.

[0107] In the optional embodiment, optionally, the specific manner of the configuration module 301 determining the power divider parameters corresponding to the signal overflow control requirements can include: obtaining a plurality of candidate power divider parameters; each candidate power divider parameter includes an antenna power ratio; testing the adjustment gain difference corresponding to each vehicle window component under each candidate power divider parameter based on the power divider corresponding to each candidate power divider parameter; for each candidate power divider parameter, determining whether all the adjustment gain differences corresponding to the candidate power divider parameter are less than the target gain difference threshold; For each candidate power divider parameter, when it is judged that all the adjustment gain differences corresponding to the candidate power divider parameter are less than the target gain difference threshold, the candidate power divider parameter is determined as the power divider parameter corresponding to the signal overflow control requirement.

[0108] It can be seen that the apparatus described in the optional embodiment can also test the adjustment gain difference of each window component corresponding to the power divider corresponding to different candidate power divider parameters under the candidate power divider parameter, and if it is judged that all the adjustment gain differences corresponding to any candidate power divider parameter are less than the target gain difference threshold, the candidate power divider parameter is determined as the power divider parameter corresponding to the signal overflow control requirement, which can improve the test efficiency and test accuracy of the power divider of different antenna power ratios in the current CPD antenna application scenario, thereby improving the test efficiency of the gain difference influence of the power divider of different antenna power ratios on different window components, and further facilitating the determination of the power divider parameter most meeting the signal overflow control requirement, improving the determination accuracy of the power divider parameter, and further facilitating the determination accuracy of the configuration parameter of the CPD antenna.

[0109] Embodiment Four Please refer to Figure 11 , Figure 11 is another structure diagram of the CPD antenna design apparatus disclosed by the embodiments of the present application. As shown in Figure 11 , the CPD antenna design apparatus can include: a memory 401 storing executable program codes; a processor 402 coupled with the memory 401; The processor 402 invokes the executable program codes stored in the memory 401 to execute part or all of the steps of the CPD antenna design method described in the embodiment one or the embodiment two of the present application.

[0110] Embodiment Five The embodiments of the present application disclose a computer storage medium storing computer instructions, which when invoked, are used to execute part or all of the steps of the CPD antenna design method described in the embodiment one or the embodiment two of the present application.

[0111] Embodiment Six The embodiments of the present application disclose a computer program product, which includes a non-transitory computer readable storage medium storing a computer program, and the computer program is operable to make a computer execute part or all of the steps of the CPD antenna design method described in the embodiment one or the embodiment two.

[0112] The apparatus embodiments described above are only illustrative, wherein the modules described as separate components can or can not be physically separated, and the components displayed as modules can or can not be physical modules, i.e., can be located in one place or distributed to multiple network modules. Part or all of the modules can be selected to achieve the purposes of the embodiments according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0113] Through the specific description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be realized by means of software and necessary general hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of software products, and the computer software products can be stored in a computer readable storage medium, including a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, a magnetic disk storage, a magnetic tape storage, or any other computer readable medium that can be used to carry or store data.

[0114] Finally, it should be noted that: the CPD antenna design method and device disclosed by the embodiments of the present application are only the preferred embodiments of the present application, and are used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that; it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A CPD antenna design method, characterized by, The method comprises: According to the determined target signal coverage requirement, configuring the CPD antenna corresponding to the target vehicle; Wherein, the configured CPD antenna has an overflow gain difference threshold for any window component in the target vehicle, which is less than or equal to the determined target gain difference threshold.

2. The CPD antenna design method of claim 1, wherein, The target gain difference threshold is greater than or equal to 15dB and less than 30dB.

3. The CPD antenna design method of claim 2, wherein, The target gain difference threshold is determined by the following way: For each of the window components, according to the positional relationship between the CPD antenna and the window component, determine the target gain difference threshold of the CPD antenna for the window component.

4. The CPD antenna design method of any one of claims 1-3, wherein, The target signal coverage requirement includes signal coverage requirement and signal overflow control requirement; And the target signal coverage requirement is determined by the following way: Determine the cabin data of the target vehicle and the installation position of the CPD antenna in the target vehicle; The cabin data includes the position information corresponding to the plurality of vehicle components in the target vehicle; All the vehicle components at least include all the window components; The distance between the installation position and the central position of the cabin of the target vehicle is less than a preset distance threshold; According to the cabin data and the installation position, determine the signal coverage requirement of the CPD antenna in the target vehicle; According to the signal coverage requirement, determine the antenna element parameters required for setting the CPD antenna under the condition of meeting the signal coverage requirement; According to the cabin data and the antenna element parameters, determine the signal overflow control requirement of the CPD antenna in the target vehicle.

5. The CPD antenna design method of claim 4, wherein, Each of the window components is one of the front windshield, the rear windshield, the left window and the right window; And all the vehicle components also include at least one row of footwell area of the target vehicle and / or at least one row of seat area of the target vehicle; Wherein, each row of the footwell area includes a left footwell area and / or a right footwell area; Each row of the seat area includes a left seat area and / or a right seat area.

6. The CPD antenna design method of claim 5, wherein, According to the cabin data and the installation position, determine the signal coverage requirement of the CPD antenna in the target vehicle, comprising: According to the cabin data and the installation position, determine the distance information set corresponding to the installation position; The distance information set includes a plurality of distance information, and each distance information is the distance information between the CPD antenna and one of the vehicle components; Based on the preset coverage angle calculation formula, according to the installation position and the distance information set, calculate the signal coverage angle data of the CPD antenna in the target vehicle about the preset vehicle body direction; The preset vehicle body direction includes the vehicle length direction and / or the vehicle width direction; The signal coverage angle data includes the signal angle data of the CPD antenna about the plurality of vehicle components; Wherein, the signal coverage requirement includes the signal coverage angle data.

7. The CPD antenna design method of claim 6, wherein, According to the signal coverage requirement, determine the antenna element parameters required for setting the CPD antenna under the condition of meeting the signal coverage requirement, comprising: obtaining preset parameters corresponding to antenna elements required by the CPD antenna; the preset parameters include beam widths about the preset vehicle body direction under a plurality of lobe widths; obtaining a preset coverage gain difference threshold value matched with the target vehicle; the coverage gain difference threshold value is a maximum gain difference value corresponding to the preset parameters of the CPD antenna and the determined coverage maximum angle data; the coverage maximum angle data includes angle data with maximum values in the vehicle length direction and the vehicle width direction respectively in the signal coverage angle data; determining a first antenna element quantity required in the vehicle length direction and a second antenna element quantity required in the vehicle width direction according to the preset parameters, the signal coverage angle data and the coverage gain difference threshold value; determining antenna array parameters corresponding to the CPD antenna as antenna element parameters required by the CPD antenna in the case of meeting the signal coverage requirement according to the first antenna element quantity and the second antenna element quantity.

8. The CPD antenna design method of claim 4, wherein, The determination of the signal overflow control requirement of the CPD antenna for the target vehicle according to the vehicle cabin data and the antenna element parameters comprises: obtaining initial component gains corresponding to each vehicle component; calculating estimated component gain differences corresponding to each vehicle component according to the vehicle cabin data, the antenna element parameters and the initial component gains corresponding to each vehicle component based on a preset vehicle interior gain difference calculation formula; the estimated component gain difference corresponding to each vehicle component is a gain difference between an overflow critical point corresponding to the vehicle component and a coverage critical point corresponding to the vehicle component; determining a component gain difference threshold value corresponding to each vehicle component as an overflow gain difference threshold value corresponding to the vehicle component according to the estimated component gain difference corresponding to each vehicle component; the component gain difference threshold value corresponding to each vehicle component is a gain difference threshold value between the overflow critical point corresponding to the vehicle component and the coverage critical point corresponding to the vehicle component, and the component gain difference threshold value corresponding to each vehicle component is greater than or equal to the estimated component gain difference corresponding to the vehicle component. The signal overflow control requirement of the CPD antenna for the target vehicle comprises the overflow gain difference threshold value corresponding to each vehicle component.

9. The CPD antenna design method of any of claims 5-8, wherein, The configuration of the CPD antenna corresponding to the target vehicle according to the determined target signal coverage requirement comprises: determining antenna configuration parameters of the CPD antenna for the target vehicle according to the determined antenna element parameters required by the CPD antenna and the signal overflow control requirement; the antenna configuration parameters are used to configure the CPD antenna meeting the signal coverage requirement and the signal overflow control requirement; configuring the CPD antenna corresponding to the target vehicle according to the antenna configuration parameters.

10. The CPD antenna design method of claim 9, wherein, The determination of the antenna configuration parameters of the CPD antenna for the target vehicle according to the determined antenna element parameters required by the CPD antenna and the signal overflow control requirement comprises: determining whether any overflow gain difference threshold value in the signal overflow control requirement is greater than or equal to the target gain difference threshold value; determining a power divider parameter corresponding to the signal spillover control requirement when it is determined that at least one of the spillover gain difference threshold values in the signal spillover control requirement is greater than or equal to the target gain difference threshold value; the power divider parameter being used to configure a power divider required by the CPD antenna in the target vehicle to adjust a sidelobe width corresponding to an antenna element of the CPD antenna through the power divider; and determining the antenna element parameter and the power divider parameter as the antenna configuration parameter of the CPD antenna in the target vehicle. determining the antenna element parameter as the antenna configuration parameter of the CPD antenna in the target vehicle when it is determined that none of the spillover gain difference threshold values in the signal spillover control requirement is greater than or equal to the target gain difference threshold value.

11. The CPD antenna design method of claim 10, wherein, The determining of the power divider parameter corresponding to the signal spillover control requirement comprises: obtaining a plurality of candidate power divider parameters; each of the candidate power divider parameters comprises an antenna power ratio; testing an adjusted gain difference corresponding to each of the vehicle window components under each of the candidate power divider parameters based on a power divider corresponding to each of the candidate power divider parameters; judging whether all of the adjusted gain differences corresponding to each of the candidate power divider parameters are less than the target gain difference threshold value; determining the candidate power divider parameter as the power divider parameter corresponding to the signal spillover control requirement when it is determined that all of the adjusted gain differences corresponding to the candidate power divider parameter are less than the target gain difference threshold value.

12. A CPD antenna design apparatus, characterized by, The apparatus comprises: a configuration module configured to configure a CPD antenna corresponding to a target vehicle according to the determined target signal coverage requirement; wherein the configured CPD antenna has a spillover gain difference threshold value corresponding to any vehicle window component in the target vehicle that is less than or equal to the determined target gain difference threshold value.

13. A CPD antenna design apparatus, characterized by, The apparatus comprises: a memory storing executable program codes; a processor coupled to the memory; the processor invokes the executable program codes stored in the memory to execute the CPD antenna design method according to any one of claims 1-11.

14. A computer storage medium, characterized in that The computer storage medium stores computer instructions, which are invoked to execute the CPD antenna design method according to any one of claims 1-11.

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