Detailed Description
In order to better understand the technical solutions described above, the technical solutions of the embodiments of the present application are described in detail below with reference to the drawings and the specific embodiments, and it should be understood that the specific features of the embodiments and the embodiments of the present application are detailed descriptions of the technical solutions of the embodiments of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and the embodiments of the present application may be combined with each other without conflict.
Referring to fig. 1, a method for selecting a location according to a first embodiment of the present invention is shown, and the method specifically includes steps S01-S04, which are detailed as follows:
s01, when receiving the user-input instruction for selecting the position of the enclosed space, searches whether the first preset database contains the user data corresponding to the user ID.
The closed space is a bearing space of a train, an airplane, a cruise ship, a passenger car and the like, and the embodiment of the invention is not particularly limited. The position selection instruction input by the user can be a selection instruction input through a short message, or a selection instruction input through an APP graphical interface, and the like.
In this embodiment, the first preset data stores user data corresponding to different user IDs respectively; the location selection instruction includes a user ID of the user, and the user ID may be used to uniquely identify the user. Whether the user data corresponding to the user ID exists in the first preset database or not is searched, whether the user data is uploaded or not can be determined, namely if the user data corresponding to the user ID exists in the first preset database, the user data is uploaded; and if the first preset data does not have the user data corresponding to the user ID, indicating that the user does not upload the user data.
Specifically, the user data includes personal data for representing temperature data of the user's body, and location data, the temperature data being a set WD = { WD = temperature data for a set of temperature data records of the user within a predetermined time window (for example, 14 days)1,WD2,...,WDnIn which WD isiIth temperature data; the position data is a geographical track list set TR = { TR ] of the user in a predetermined time window (for example, 14 days)1,TR2,...,TRnIn which TRiThe ith geographical track position may adopt any geographical position identification method in the prior art, such as longitude and latitude geographical coordinates or a Geohash character string.
In an embodiment of the present invention, after determining that the user data corresponding to the user ID exists in the first preset database, before receiving the predetermined location selected by the user, the method further includes: determining safety parameters corresponding to a user, and if the safety parameters of the user meet the position preset requirements, receiving user selection and receiving a preset position selected by the user; and if the safety parameters of the user do not meet the position preset requirements, outputting prompt information that the user cannot select the position.
Specifically, the security parameters corresponding to the user are determined mainly by the following method: matching the personal data with a first preset condition to determine a safety parameter corresponding to the personal data; and matching the position data with a second preset condition to determine the safety parameters corresponding to the position data.
The first preset condition can be set according to actual requirements, for example, the first preset condition is set into three levels according to temperature data, namely a third level (high risk: more than 38 degrees of body temperature), a second level (medium risk: 37.3 to 38 degrees of body temperature) and a first level (low risk: 36.3 to 37.2 degrees of body temperature). For example, after the body temperature data of the user is acquired, all the body temperature data of the user is matched with three levels in the first preset condition, and if only one temperature data of the user is within the range of 37.3 to 38 degrees, it can be determined that the safety parameter corresponding to the personal data of the user is the second level (medium risk).
In this embodiment, the second preset condition may set the security parameter according to the area. For example, a third zone status (high risk geographical area), a second zone status (medium risk geographical area), a first zone status (low risk geographical area), etc. In the present embodiment, location data of a user, that is, a geographical track list set TR = { TR =, { TR } is acquired1,TR2,...,TRnAfter the TRi is detected, retrieving and acquiring a corresponding geographic area state from an issuing platform for any TRi; the release platform stores the mapping relation (geographical area, area state). Preferably, the region states include the 1 st, 2., K region states, preferably, K = 3.
And if the area state corresponding to any TRi is the third area state, returning prompt information that the position selection instruction cannot be executed to the user.
And if the area state corresponding to any TRi is the second area state, receiving the user selection and receiving the preset position selected by the user.
And if the area state corresponding to any TRi is the first area state, receiving the user selection and receiving the preset position selected by the user.
It should be noted that, in this implementation, the security parameter of the user may be determined according to the security parameter corresponding to the personal data and/or the security parameter corresponding to the location data, and specifically, the highest level of the security parameter in the security parameter of the personal data and the security parameter of the location data is determined as the security parameter of the user; or carrying out weighted calculation on the safety parameters of the personal data and the safety parameters of the position data to determine the safety parameters of the user; for example, the safety parameters are divided into three levels, which are 1,2 and 3, and the three values represent safety parameters (low risk, medium risk and high risk) corresponding to the personal data and the position data, the larger the number is, the higher the risk coefficient is, and if the safety parameter corresponding to the personal data of the user is 1, the weight value corresponding to the personal data is 0.6; and if the safety parameter corresponding to the position data is 3 and the weight value corresponding to the position data is 0.4, the safety parameter of the user is calculated to be 1.8 through weighting.
In the embodiment of the invention, after the safety parameters of the user are calculated, whether the safety parameters meet the position preset requirement is determined, whether the safety parameters are less than or equal to the preset grade is specifically judged, and if the safety parameters are less than or equal to the preset grade, the preset position selected by the user is received; and if so, outputting prompt information that the user cannot select the position. For example, if the user's security parameter is calculated to be 1.8 by weighting and the preset security parameter is 2, it can be determined that the user's security parameter meets the location reservation requirement, and the user-selected predetermined location can be received.
S02, if the first preset database has user data corresponding to the user ID, receiving a preset position selected by the user; and acquires user data at a position around a predetermined position in the enclosed space.
The first preset data stores user data corresponding to different user IDs, and also needs to store a predetermined location, a model (e.g., 787, etc.), and a bin identifier (e.g., an economy class, a business class, etc.) corresponding to the user ID. The Id of the mapping table can be obtained according to the model and the bin identification. Obviously, the mapping table is multiple for different models and different bins. Specifically, the mapping table includes a first coordinate and a second coordinate, where the first coordinate is used to represent a seat coordinate (e.g., 35L) in the corresponding model, and the second coordinate is used to represent a position coordinate corresponding to the seat coordinate (e.g., a digital coordinate (35, 11)) corresponding to the seat coordinate, where the seat coordinate is implemented as a character string type and the position coordinate is implemented as an integer type. The predetermined position may be represented as Pos = (x, y), x may be used to represent the abscissa of the preset position, and y may be used to represent the ordinate of the predetermined position. Through the mapping of the mapping table, the position coordinates can be conveniently used for calculating the distance between different coordinates, and in a preferred embodiment, the mapping relationship between the first coordinate and the second coordinate is as follows:
35A,(35,1)
35B,(35,2)
35C,(35,3)
35D,(35,5)
35E,(35,6)
35H,(35,7)
35J,(35,9)
35K,(35,10)
35L,(35,11)
36A,
36B,
......
it should be noted that, in this embodiment, the predetermined location selected by the receiving user carries a corresponding flight number and a corresponding bin identifier, the corresponding model can be obtained through the flight number, and then the corresponding mapping table is determined according to the model and the bin identifier. In the present embodiment, after receiving a predetermined position selected by a user, user data (NS) of a position around the predetermined position in the enclosed space is acquired1,NS2,......,NSN) The specific process of (2) is as follows:
s021, a predetermined position Pos selected by the user is received, for example, the first coordinate is Pos =35L, but may be represented as (35, L).
S022, obtaining the mapped second coordinate (x 0, y 0) according to the mapping table. For example, (x 0, y 0) = (35, 11) for (35, L).
S023, acquiring second coordinates (xj, yj) of the adjacent N users according to the second coordinates (x 0, y 0), wherein the value of j is 1-N.
The step S023 further includes:
acquiring adjacent second coordinates (xi, yi) according to the second coordinates (x 0, y 0), wherein xi is [ (x 0-deltaX), (x 0+ deltaX) ], yi is [ (y 0-deltaY), (y 0+ deltaY) ], but does not include (x 0, y 0); the values of deltaX and deltaY can be 1-2, 1-3 or 1-4, and the embodiment of the invention is not particularly limited.
For example, in the case where deltaX and deltaY are both 1, the adjacent second coordinates (xi, yi) of the spatial position (35, 11) are:
(34,10)
(34,11)
(34,12)
(35,10)
(35,12)
(36,10)
(36,11)
(36,12)
for any adjacent second coordinate (xi, yi), the following is performed:
in the mapping table, the first coordinate is retrieved by using the second coordinate (xi, yi), if the retrieval result is Null, the position of the first coordinate which is indicated as being empty is a possibly passageway or a nonexistent seat; and if the retrieval result is not Null, performing the next step of processing.
As for the adjacent second coordinates (xi, yi) of the second coordinates (35, 11) in this example, (34, 10), (34, 11), (34, 12), (35, 12), (36, 12) the search result is Null. The search results of (35, 10), (36, 10), and (36, 11) are not Null, but are: (xj, yj) =35K, 36L. That is, three positions 35K, 36K, and 36L adjacent to the predetermined position 35L are acquired, and then user data corresponding to the three positions are acquired.
In the embodiment of the present invention, if it is determined that the user data corresponding to the user ID exists in the first preset database and the user data meets the travel requirement, the predetermined position selected by the user may be received, and then the user data of the position around the predetermined position is obtained. The range of the peripheral position (i.e., deltaX and deltaY) may be set according to actual requirements, for example, the peripheral position is set to be within a range of 4 seats with the predetermined position as a center, or within a range of 5 seats, and the embodiment of the present invention is not particularly limited. Specifically, when the user selects the predetermined position, the position selected by the user is determined, that is, the position attribute of the predetermined position is checked, for example, whether the position attribute is close to a window or an aisle, or whether people are on both sides. The different crowdedness degrees can remind the user of the position attribute on the page.
And S03, determining the safety parameters of the preset position according to the user data of the surrounding position and the distance between the surrounding position and the preset position.
Further said user data also comprises security parameters (i.e. "risk level") of the user.
If three positions around the preset position 35L are acquired as first coordinates 35K, 36K and 36L respectively, determining whether corresponding user data exist in the three positions or not, if the user data of the surrounding positions do not exist, namely the positions 35K, 36K and 36L are not preset by a user, setting the safety state of the preset position Pos to be a first state (namely low risk), and ending the processing;
if there is user data of a surrounding location, i.e. one or more of the locations 35K, 36L are predetermined, a first coordinate is determined in which the user data is present, and then the following steps are performed based on a second coordinate (xi, yi) corresponding to the determined first coordinate:
if the second coordinate (xi, yi) corresponds to the safety parameter of the user being in the second state (i.e., "risk in process"), and the distance between (xi, yi) and (x 0, y 0) is less than the first threshold, setting the safety parameter of the predetermined position Pos to be in the second state, and ending the process; otherwise, the security parameter of the predetermined position Pos is set to the first state.
In the embodiment of the invention, after the preset position selected by the user is received, the safety parameter corresponding to the user data of the peripheral position of the selected preset position is determined, and then the safety parameter of the preset position is reminded according to the distance between the peripheral position and the preset position. For example, different physical cabins are low safety parameters, if a user in one position is a middle risk position when the user in the position is more than 4 positions away from a seat by taking a predetermined position as a center of a circle (the user in one position is counted in an aisle, the user in one position is counted in a safety exit, and the user in one position is counted in a diagonal line, the predetermined position is a middle risk position, and if the user in one position is a middle risk position in front, back, left and right adjacent positions, the predetermined position is a high risk position.
And when the user selects the position, different colors and prompt characters are displayed on the page to remind the user. E.g., orange, indicating that the predetermined location is a medium risk seat; display in red, indicating that the predetermined location is a high risk seat; shown green indicating that the predetermined location is a low risk seat.
S04, outputting safety parameter prompt information of the preset position to prompt the safety state of the preset position for the user; and when receiving the confirmation of the user to the safety parameter prompt information, generating the position certificate of the user according to the user data of the user and the selected preset position.
In the embodiment of the present invention, after the prompt information of the security parameters of the predetermined location is output to the user, if the user confirms the security parameter information of the predetermined location, it indicates that the user confirms the selected predetermined location, and at this time, the travel credential of the user needs to be generated according to the user data of the user and the selected predetermined location.
Specifically, if the user uses an airplane for travel, the user generates a boarding pass based on the user data and the predetermined position after boarding. After check-in, according to the safety parameters corresponding to the user data of the current user, electronic boarding cards with different colors can be generated to mark and remind the user. The security parameters of the user are marked in the two-dimensional code of the electronic boarding check with different colors and prompt words. For example, a yellow two-dimensional code picture is used for identifying that a certain risk exists, and characters such as risks in residence are arranged at the bottom of the two-dimensional code to explain specific risk contents.
The invention provides a position selection method, which comprises the steps of searching whether user data corresponding to a user ID exists in a first preset database or not when a position selection instruction of a closed space input by a user is received; if the user data corresponding to the user ID exists, receiving a preset position selected by the user; and acquiring user data of a peripheral position of a predetermined position in the closed space; determining safety parameters of a preset position according to the user data of the surrounding position and the distance between the surrounding position and the preset position; outputting safety parameter prompt information of a preset position to prompt a user of the safety state of the preset position; and when receiving the confirmation of the user to the safety parameter prompt information, generating the position certificate of the user according to the user data of the user and the selected preset position. Therefore, the safety parameter evaluation is realized for the user through the invention, the risk reminding is carried out for the safety parameter of the preset position, and the safety of the user in trip is ensured.
As shown in fig. 2, in an embodiment provided by the present invention, after generating the location credential of the user according to the user data of the user and the selected predetermined location at step S04, the method further includes:
and S05, acquiring personal data and position data of the user who has generated the position certificate in the closed space in real time.
In the embodiment of the present invention, in order to obtain a situation that a security parameter appearing in a user who has generated a travel credential is increased in time and a situation that a security parameter appearing in a user who has generated the travel credential is higher later, after a travel credential corresponding to the user is generated, the embodiment needs to monitor personal data and position data of the user who has generated the position credential in a closed space in real time, so as to send risk prompt information to the user who has generated the position credential according to the monitored personal data and position data.
S06, matching the personal data with a first preset condition to determine the safety parameters corresponding to the personal data; and matching the position data with a second preset condition to determine the safety parameter corresponding to the position data.
It should be noted that, in the present embodiment, determining the security parameter corresponding to the personal data and determining the security parameter corresponding to the location data are the same as the corresponding description in step S01, and the description of the present embodiment is omitted here.
And S07A, if the situation that the personal data or the safety parameters corresponding to the position data are increased is determined, sending position risk prompt information to the user who has generated the position certificate in the closed space.
Specifically, if it is determined that the personal data or the position data security parameter is increased in the user who has generated the travel voucher, the user needs to send the riding risk prompt information to the user who has generated the position voucher in the enclosed space to prompt the user of the risk prompt information, so that the user can select to refund the ticket or cancel the predetermined position of the user according to the risk prompt information.
For example, if a flight has a personal data security parameter increase among the users who determine that the flight is on-duty, the flight is sent with a risk prompt message to all the users who determine that the flight is on-duty, so that the users who are on-duty can select to refund or re-check the flight according to the received risk prompt message.
S07B, acquiring the preset position of the user with the generated position certificate and the security parameter; determining a user whose safety parameter raises the peripheral position of the preset position of the user according to the preset position relation in the closed space; and sending position risk prompt information to the user of which the safety parameter raises the position around the preset position of the user.
Step S07B is a parallel step of step S07A. In the embodiment, a preset position of a user with the generated position certificate and the security parameter rising user is obtained; determining a user whose safety parameter raises the peripheral position of the preset position of the user according to the preset position relation in the closed space; and sending position risk prompt information to the user of which the safety parameter raises the position around the preset position of the user.
For example, if the present embodiment determines that the user of the seat 11F in the flight has an elevated safety parameter, the present embodiment sends an occupancy risk prompting message to the user of the seat around the seat 11F to prompt the user of the seat around the seat of the flight to present an occupancy risk, so that the user of the seat around the flight can select to refund or check in the subsequent step according to the occupancy risk prompting message.
S08, receiving a position quitting voucher application and/or a preset position canceling application sent by the position voucher user, wherein the position quitting voucher application and/or the preset position canceling application comprise preset position information.
And S09, acquiring personal data and position data of the user of the position voucher in the closed space in real time after triggering and executing the position voucher application and/or canceling the preset position application.
In the embodiment of the invention, after the step S07B and the step S07A, the location credential request and/or the predetermined location cancellation request sent by the user who has generated the location credential are received, after the location credential request and/or the predetermined location cancellation request is triggered to be executed, the personal data and the location data of the user who has left the location credential in the enclosed space are acquired in real time, and then the step S06 is skipped to continue the execution.
It should be noted that, if the operation is performed after step S07B, only the location-quitting credential application and/or the predetermined location cancellation application sent by the user at the surrounding location with the security parameter being raised may be received, that is, only the user at the surrounding location with the dangerous user has the right to initiate the location-quitting credential application and/or cancel the predetermined location application, and the user at the safe location does not have the right to initiate the location-quitting credential application and/or cancel the predetermined location application.
The embodiment of the invention provides a position selection method, which comprises the steps of acquiring personal data and position data of a user who generates a position certificate in a closed space in real time, and matching the personal data with a first preset condition to determine a safety parameter corresponding to the personal data; matching the position data with a second preset condition to determine a safety parameter corresponding to the position data; if the situation that the safety parameters corresponding to the personal data or the position data are increased is determined to exist, position risk prompt information is sent to a position credential user generated in the closed space, then a position quitting credential application and/or a preset position canceling application sent by the position credential user generated are received, the safety risk of the airplane flight is evaluated again based on the user data of the rest position credential users after the position quitting credential application and/or the preset position canceling application is triggered to be executed, the evaluation result is sent to a user who has been checked, therefore, the safety parameter evaluation of all seats on the flight is achieved, the safety parameter evaluation of each user on the flight is achieved, and the safety parameter change reminding is conducted on the seat safety parameter change.
In an application scenario provided by the embodiment of the invention, the processing and desensitization of epidemic situation information are realized on the basis of an original check-in system in the civil aviation industry, the check-in of a user is reminded and intercepted according to uploaded information, and a powerful configuration system is provided for supporting the change of policies during flexible and variable epidemic situations.
Specifically, as shown in fig. 3, the check-in system of the present invention includes the following modules: an epidemic situation information processing module; the verification and reminding module is used for checking on the user according to the epidemic situation information; a configuration module; providing an SDK interface module externally; the configuration module can realize the configuration of multiple dimensions such as departure place, destination, flight, specific users of a certain type and the like according to the driver, and can accurately and specially limit and remind the flights of different risks and routes. The SDK interface module can be used for verifying the safety parameters of a certain flight. The interface can support the use of airlines and airports, and can be used for improving the safety capability of a counter check-in machine and security check.
The health uploading information processing module is used for enabling the user health uploading information to comprise detailed personal privacy information of the user, including a mobile phone number, an identity card, a place of residence at a destination, a recent activity route and the like. If the health uploading information of the user is used for other system services, desensitization treatment must be carried out on the health uploading information of the user, and the risk of privacy disclosure of the user is avoided. The method can be combined with the current epidemic situation policies of all regions, count and analyze the user health uploading condition on a specific flight in real time, and evaluate the safety parameters of the flight.
The check-in process processing module is used for checking and reminding the current user according to the health uploading condition of the flight user on the basis of the previous module; the whole process is verified by combining flight safety parameters and the health condition of the user, and whether the user can carry out subsequent check-in operation or not is determined; entering a seat selection stage, recommending seats which can be selected for a user in a seat map according to seat selection conditions in a cabin, wherein seat selection rules can be configured and comprise configuration according to seat number intervals and configuration according to distance intervals; and after the check-in is finished, generating a boarding check with health data for the user according to the health uploading data and the check-in data of the user, and checking by security check personnel after the user enters the airport.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
In an embodiment, a position selection device is provided, and the position selection device corresponds to the position selection method in the above embodiments one to one. As shown in fig. 4, the functional modules of the position selection device are described in detail as follows:
a retrieval module 10, configured to, when a location selection instruction of the enclosed space input by a user is received, retrieve whether user data corresponding to a user ID exists in a first preset database; user data respectively corresponding to different user IDs are stored in the first preset data; the position selection instruction comprises a user ID of the user;
a receiving module 20, configured to receive a predetermined location selected by a user if user data corresponding to a user ID exists in the first preset database; and acquiring user data at positions around the predetermined position in the enclosed space;
a determining module 30, configured to determine a security parameter of the predetermined location according to the user data of the surrounding location and the distance from the surrounding location to the predetermined location;
the output module 40 is configured to output a safety parameter prompt message of the predetermined location to prompt the user of the safety state of the predetermined location;
a generating module 50, configured to generate a location credential of the user according to the user data of the user and the selected predetermined location when receiving the confirmation of the user on the security parameter prompt message.
For the specific definition of the selection means of the position, reference may be made to the above definition of the selection method of the position, which is not described herein again. The various modules in the above-described apparatus may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 5. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a method of selecting a location.
In one embodiment, a computer device is provided, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
when a position selection instruction of the closed space input by a user is received, searching whether user data corresponding to a user ID exists in a first preset database; user data respectively corresponding to different user IDs are stored in the first preset data; the position selection instruction comprises a user ID of the user;
if the user data corresponding to the user ID exists in the first preset database, receiving a preset position selected by the user; and acquiring user data at positions around the predetermined position in the enclosed space;
determining the safety parameters of the preset position according to the user data of the surrounding position and the distance between the surrounding position and the preset position;
outputting safety parameter prompt information of the preset position to prompt the user of the safety state of the preset position; and when receiving the confirmation of the user to the safety parameter prompt information, generating a position certificate of the user according to the user data of the user and the selected preset position.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
when a position selection instruction of the closed space input by a user is received, searching whether user data corresponding to a user ID exists in a first preset database; user data respectively corresponding to different user IDs are stored in the first preset data; the position selection instruction comprises a user ID of the user;
if the user data corresponding to the user ID exists in the first preset database, receiving a preset position selected by the user; and acquiring user data at positions around the predetermined position in the enclosed space;
determining the safety parameters of the preset position according to the user data of the surrounding position and the distance between the surrounding position and the preset position;
outputting safety parameter prompt information of the preset position to prompt the user of the safety state of the preset position; and when receiving the confirmation of the user to the safety parameter prompt information, generating a position certificate of the user according to the user data of the user and the selected preset position.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.