Park entering management system for travel driving

文档序号:1862891 发布日期:2021-11-19 浏览:35次 中文

阅读说明:本技术 一种旅游驾车入园管理系统 (Park entering management system for travel driving ) 是由 周道华 张佳音 王建 程希 杨陈 曾俊 洪江 彭容 李武鸿 张明娟 许江泽 黄 于 2021-08-27 设计创作,主要内容包括:本发明公开了一种旅游驾车入园管理系统,包括:门票销售单元,用于用户在线购买门票,并将用户已购买的门票信息与用户输入的车牌信息进行绑定,获得订单信息;云端,用于存储所述订单信息;门禁管理单元,用于识别获得请求进入景区的第一车辆的第一车牌信息,并从所述云端中匹配出与所述第一车牌信息对应的第一订单信息;车内人数识别单元,用于识别获得所述第一车辆内的第一人数信息;验票单元,用于比较第一人数信息与所述第一订单信息中的人数信息是否一致,若比较结果一致,则开启道闸,若比较结果不一致,则关闭道闸;利用本系统提高了进入景区的效率,节省了验票人员的人力,降低了大量游客排队取票、验票导致病毒传播的风险。(The invention discloses a park management system for tourism driving, which comprises: the ticket selling unit is used for the user to purchase tickets on line and binding the ticket information purchased by the user with the license plate information input by the user to obtain order information; the cloud end is used for storing the order information; the access control management unit is used for identifying and obtaining first license plate information of a first vehicle requesting to enter a scenic spot, and matching first order information corresponding to the first license plate information from the cloud end; the in-vehicle number identification unit is used for identifying and obtaining first number information in the first vehicle; the ticket checking unit is used for comparing whether the first person number information is consistent with the person number information in the first order information or not, if the comparison result is consistent, the barrier gate is opened, and if the comparison result is inconsistent, the barrier gate is closed; the system improves the efficiency of entering the scenic spot, saves the manpower of ticket checking personnel, and reduces the risk of virus propagation caused by queuing and ticket checking of a large number of tourists.)

1. A travel drive park entry management system, the system comprising:

the ticket selling unit is used for the user to purchase tickets on line and binding the ticket information purchased by the user with the license plate information input by the user to obtain order information;

the cloud end is used for storing the order information;

the access control management unit is used for identifying and obtaining first license plate information of a first vehicle requesting to enter a scenic spot, and matching first order information corresponding to the first license plate information from the cloud end;

the in-vehicle number identification unit is used for identifying and obtaining first number information in the first vehicle;

and the ticket checking unit is used for comparing whether the first person number information is consistent with the person number information in the first order information, if so, opening the barrier gate, and if not, closing the barrier gate.

2. The travel drive park management system of claim 1, wherein the order information comprises: the number of entrance tickets, the number of license plates, the valid date of the entrance tickets and the number of the mobile phone of the user.

3. The system of claim 1, further comprising a modification unit configured to modify the order information by the user and update the modified order information in the cloud synchronously.

4. The system of claim 1, wherein the vehicle interior people identification unit comprises:

the vehicle type identification module is used for identifying and obtaining a first model of the first vehicle;

the inquiry module is used for inquiring and obtaining the number N of seats of the first vehicle based on the first model;

the thermal imager is used for shooting and obtaining a first thermal imaging image in the first vehicle;

the first identification module is used for calculating and obtaining the number M of people of the first vehicle based on the first thermal imaging image;

and the processing module is used for outputting the number M of the persons of the first vehicle obtained by identification when the M is less than or equal to the N, and the number identification unit in the vehicle identifies the number of the persons in the vehicle again or sends an overload alarm when the M is greater than the N.

5. The system of claim 4, wherein the vehicle interior people identification unit further comprises: and the first vehicle window detection module is used for detecting whether all vehicle windows of the first vehicle are opened or not, if all the vehicle windows of the first vehicle are opened, the thermal imager is started, and if not, an alarm is given.

6. The system of claim 1, wherein the vehicle interior people identification unit comprises:

the voice playing module is used for playing preset voice to remind the first vehicle to open the vehicle window;

the second window detection module is used for detecting whether a window of the first vehicle is opened or not;

the photographing module is used for photographing to obtain a first vehicle interior image of the first vehicle if the window of the first vehicle is opened;

and the face recognition module is used for recognizing all faces in the first vehicle image, counting the number of the faces obtained by recognition and obtaining the number of the persons in the first vehicle.

7. The system of claim 6, wherein the photographing module photographs the interior of the first vehicle at multiple angles to obtain a plurality of images of the first vehicle, the face recognition module recognizes all faces in the images of the first vehicle, eliminates the faces that are repeatedly recognized, and counts the number of the faces that are recognized to obtain the number of people in the first vehicle.

8. The system of claim 1, wherein the vehicle interior people identification unit comprises:

the timing module is used for starting timing after the first license plate information is identified;

the display unit is used for displaying the coded information;

and the counting unit is used for counting the first times of accumulated scanning of the coded information by different mobile terminals in a preset time period from the time when the timing module starts timing, and acquiring the number of the personnel of the first vehicle based on the first times, wherein the accumulated times of scanning the coded information by each mobile terminal in the preset time period is at most one.

9. The system of claim 8, wherein the vehicle interior people identification unit further comprises: and the verification module is used for scanning the coded information based on the mobile terminal to obtain the health state information of the corresponding user, giving an alarm if the health state of the user does not meet the requirement, closing the barrier gate and informing the staff.

10. The system of claim 8, wherein the display unit comprises: a plurality of display structures, each of said display structures comprising:

the device comprises a camera, a processor, a display, an electric telescopic rod, an electric trolley, a guide rail and a controller;

wherein one end of the guide rail extends to a detection area where the first vehicle stops, the other end of the guide rail extends to a position far away from the detection area, and the guide rail is fixed on the ground; the electric trolley is connected with the guide rail in a sliding mode, and the controller is used for controlling the electric trolley and the electric telescopic rod; the lower end of the electric telescopic rod is fixedly connected with the top surface of the electric trolley, the upper end of the electric telescopic rod is fixedly connected with the lower end of the display, the display surface of the display faces the detection area, and the display is used for displaying the coded information; the camera is used for collecting a vehicle body image of the first vehicle in the detection area and transmitting the vehicle body image to the processor; the processor calculates a first distance between the first vehicle and the display according to the vehicle body image; and calculating a first window height of the first vehicle; based on the first distance, the controller adjusts the position of the electric trolley on the guide rail; based on the first vehicle window height, the controller adjusts the length of the electric telescopic rod.

Technical Field

The invention relates to the field of intelligent tourism, in particular to a management system for tourism driving park entry.

Background

The ticket selling platform is a common online selling mode in scenic spots of all scenic spots at present, and online selling of tickets can be realized through a self-built platform or a platform of a third-party E-commerce system. Among the prior art, the visitor still need get off the bus and get the ticket when self-driving gets into the scenic spot and plays, then parks in the garden gate department and carries out artifical ticket checking, just later can open the banister and let the vehicle pass through, and manpower, inefficiency are consumed to this kind of mode, and self-driving's vehicle a large amount of gathering is gone into the garden gate in the scenic spot and is parkked the ticket, also leads to blocking very easily. Moreover, public health hazards such as disease transmission also exist in the garden entering mode that workers contact with a large number of tourists in sequence.

Disclosure of Invention

In order to solve the problems, the invention provides a park management system for tourism driving.

In order to achieve the above object, the present invention provides a park management system for tourism driving, the system comprising:

the ticket selling unit is used for the user to purchase tickets on line and binding the ticket information purchased by the user with the license plate information input by the user to obtain order information;

the cloud end is used for storing the order information;

the access control management unit is used for identifying and obtaining first license plate information of a first vehicle requesting to enter a scenic spot, and matching first order information corresponding to the first license plate information from the cloud end;

the in-vehicle number identification unit is used for identifying and obtaining first number information in the first vehicle;

and the ticket checking unit is used for comparing whether the first person number information is consistent with the person number information in the first order information, if so, opening the barrier gate, and if not, closing the barrier gate.

Preferably, the order information includes: the number of entrance tickets, the number of license plates, the valid date of the entrance tickets and the number of the mobile phone of the user.

Preferably, the system further comprises a modification unit, and the modification unit is used for modifying the order information by the user and synchronously updating the modified order information in the cloud.

Preferably, the in-vehicle number recognition unit includes:

the vehicle type identification module is used for identifying and obtaining a first model of the first vehicle;

the inquiry module is used for inquiring and obtaining the number N of seats of the first vehicle based on the first model;

the thermal imager is used for shooting and obtaining a first thermal imaging image in the first vehicle;

the first identification module is used for calculating and obtaining the number M of people of the first vehicle based on the first thermal imaging image;

and the processing module is used for outputting the number M of the persons of the first vehicle obtained by identification when the M is less than or equal to the N, and the number identification unit in the vehicle identifies the number of the persons in the vehicle again or sends an overload alarm when the M is greater than the N.

Preferably, the in-vehicle number recognition unit further includes: and the first vehicle window detection module is used for detecting whether all vehicle windows of the first vehicle are opened or not, if all the vehicle windows of the first vehicle are opened, the thermal imager is started, and if not, an alarm is given.

Preferably, the in-vehicle number recognition unit includes:

the voice playing module is used for playing preset voice to remind the first vehicle to open the vehicle window;

the second window detection module is used for detecting whether a window of the first vehicle is opened or not;

the photographing module is used for photographing to obtain a first vehicle interior image of the first vehicle if the window of the first vehicle is opened;

and the face recognition module is used for recognizing all faces in the first vehicle image, counting the number of the faces obtained by recognition and obtaining the number of the persons in the first vehicle.

Preferably, the photographing module performs multi-angle photographing on the interior of the first vehicle to obtain a plurality of first vehicle images, the face recognition module recognizes all faces in the first vehicle images, eliminates the faces which are repeatedly recognized, and counts the number of the faces obtained through recognition to obtain the number of the first vehicle personnel.

Preferably, the in-vehicle number recognition unit includes:

the timing module is used for starting timing after the first license plate information is identified;

the display unit is used for displaying the coded information;

and the counting unit is used for counting the first times of accumulated scanning of the coded information by different mobile terminals in a preset time period from the time when the timing module starts timing, and acquiring the number of the personnel of the first vehicle based on the first times, wherein the accumulated times of scanning the coded information by each mobile terminal in the preset time period is at most one.

Preferably, the in-vehicle number recognition unit further includes: and the verification module is used for scanning the coded information based on the mobile terminal to obtain the health state information of the corresponding user, giving an alarm if the health state of the user does not meet the requirement, closing the barrier gate and informing the staff.

Preferably, the display unit specifically includes: a plurality of display structures, each of said display structures comprising:

the device comprises a camera, a processor, a display, an electric telescopic rod, an electric trolley, a guide rail and a controller;

wherein one end of the guide rail extends to a detection area where the first vehicle stops, the other end of the guide rail extends to a position far away from the detection area, and the guide rail is fixed on the ground; the electric trolley is connected with the guide rail in a sliding mode, and the controller is used for controlling the electric trolley and the electric telescopic rod; the lower end of the electric telescopic rod is fixedly connected with the top surface of the electric trolley, the upper end of the electric telescopic rod is fixedly connected with the lower end of the display, the display surface of the display faces the detection area, and the display is used for displaying the coded information; the camera is used for collecting a vehicle body image of the first vehicle in the detection area and transmitting the vehicle body image to the processor; the processor calculates a first distance between the first vehicle and the display according to the vehicle body image; and calculating a first window height of the first vehicle; based on the first distance, the controller adjusts the position of the electric trolley on the guide rail; based on the first vehicle window height, the controller adjusts the length of the electric telescopic rod.

One or more technical schemes provided by the invention at least have the following technical effects or advantages:

according to the invention, the entrance ticket information and the license plate information are bound, so that a user can drive a bus and directly enter a scenic spot without getting off the bus for checking the ticket, the efficiency of entering the scenic spot is improved, the manpower of ticket checking personnel is saved, the ticket checking is realized without stopping, the self-driving tourists can directly drive the bus and enter the scenic spot without contact, and the risk of virus propagation caused by queuing and checking the ticket of a large number of tourists is also reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention;

FIG. 1 is a schematic diagram of the park management system for tourism driving according to the present invention;

FIGS. 2-3 are schematic structural views of the display structure of the present invention;

the system comprises a detection area 1, a display 2, an electric trolley 3, a guide rail 4, a camera 5 and an electric telescopic rod 6.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflicting with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Example one

Referring to fig. 1, a system for managing park entry of tourism driving according to an embodiment of the present invention includes:

the ticket selling unit is used for the user to purchase tickets on line and binding the ticket information purchased by the user with the license plate information input by the user to obtain order information;

the cloud end is used for storing the order information;

the access control management unit is used for identifying and obtaining first license plate information of a first vehicle requesting to enter a scenic spot, and matching first order information corresponding to the first license plate information from the cloud end;

the in-vehicle number identification unit is used for identifying and obtaining first number information in the first vehicle;

and the ticket checking unit is used for comparing whether the first person number information is consistent with the person number information in the first order information, if so, opening the barrier gate, and if not, closing the barrier gate.

The principle of the system is as follows: the system utilizes a ticket selling unit to realize that a user can buy tickets online and simultaneously bind the ticket information bought by the user with the license plate information input by the user to obtain order information, an entrance guard management unit is arranged at an entrance of the scenic region to identify and obtain first license plate information of a first vehicle requesting to enter the scenic region, such as Chuan A. If 4 persons exist, the ticket checking unit is used for comparing whether the first person number information is consistent with the person number information in the first order information, if the comparison result is consistent, the barrier gate is opened, if the comparison result is inconsistent, the barrier gate is closed, in the above example, the comparison is consistent, the barrier gate is opened, vehicles enter a park, the whole process is rapid, tourists do not need to get off the bus and check tickets, ticket checking personnel do not need to be arranged in a scenic spot, the efficiency is improved, the manpower is reduced, and the virus propagation risk caused by the fact that the personnel queue is crowded is also reduced.

In the embodiment of the present invention, the ticket selling unit may be each tourism website or distribution platform or ticket selling software.

In an embodiment of the present invention, the order information includes: the number of entrance tickets, the number of license plates, the valid date of the entrance tickets and the number of the mobile phone of the user.

In the embodiment of the present invention, the system further includes a modification unit, where the modification unit is configured to modify the order information by the user, and update the modified order information in the cloud synchronously. The user can modify the mobile phone number, the license plate number, the number of entrance tickets or the date of the user by utilizing the modification unit, so that the user can conveniently change the travel plan.

In an embodiment of the present invention, the in-vehicle number identification unit includes:

the vehicle type identification module is used for identifying and obtaining a first model of the first vehicle;

the inquiry module is used for inquiring and obtaining the number N of seats of the first vehicle based on the first model;

the thermal imager is used for shooting and obtaining a first thermal imaging image in the first vehicle;

the first identification module is used for calculating and obtaining the number M of people of the first vehicle based on the first thermal imaging image;

and the processing module is used for outputting the number M of the persons of the first vehicle obtained by identification when the M is less than or equal to the N, and the number identification unit in the vehicle identifies the number of the persons in the vehicle again or sends an overload alarm when the M is greater than the N.

In the first embodiment of the invention, the number of people in the vehicle is counted by utilizing the thermal imaging principle, the traditional thermal imaging counting method is easy to make mistakes and is not very accurate, in order to improve the accuracy, the invention designs the query module to query and obtain the number N of seats of the first vehicle based on the first model, for example, the number of seats of the Lincoln MKC is 5; then, shooting by using a thermal imager to obtain a first thermal imaging image in the first vehicle; obtaining, by a first identification module, a number of people M for the first vehicle based on the first thermographic image calculation, such as 6; the processing module is used for processing the number of people, when M is smaller than or equal to N, the number M of people of the first vehicle obtained through recognition is output, when M is larger than N, the number identification unit in the vehicle identifies the number of people in the vehicle again or sends an overload alarm, at the moment, the number 6 of people in the vehicle is larger than 5, the number identification of people in the vehicle is carried out again or an overload alarm is sent out, and inaccurate identification or overloading of a user into a park is avoided.

The applicant also finds the defect of accuracy in personnel number identification through a thermal imaging mode, and when the thermal infrared imager is used for detecting the number of people in the vehicle, the vehicle window must be opened, because the wavelength of the general thermal infrared imager is 8-14 mu m, the general thermal infrared imager cannot penetrate through glass, and the number of people in the vehicle cannot be detected. Therefore, in order to solve the above problems, an embodiment of the present invention improves an in-vehicle head count recognition unit that is inaccurate in recognition results of the in-vehicle head count recognition unit when a window of a vehicle is not opened, the in-vehicle head count recognition unit further including: and the first vehicle window detection module is used for detecting whether all vehicle windows of the first vehicle are opened or not, if all the vehicle windows of the first vehicle are opened, the thermal imager is started, and if not, an alarm is given. When the fact that the windows of the first vehicle are not opened is detected, warning is given, and after the vehicles of the first vehicle are all opened, the accuracy of the number of people in the vehicle obtained by shooting through the thermal imager is high.

The first window detection module can be implemented by image recognition, and firstly recognizes the position of a window, and then recognizes whether the window is in an open state, wherein the specific open state can be flexibly set according to actual needs, for example, the window is opened by half and is closed by 3 times when being opened, and the like.

Example two

Different from the first embodiment, the in-vehicle head count recognition unit in the second embodiment includes:

the voice playing module is used for playing preset voice to remind the first vehicle to open the vehicle window;

the second window detection module is used for detecting whether a window of the first vehicle is opened or not;

the photographing module is used for photographing to obtain a first vehicle interior image of the first vehicle if the window of the first vehicle is opened;

and the face recognition module is used for recognizing all faces in the first vehicle image, counting the number of the faces obtained by recognition and obtaining the number of the persons in the first vehicle.

The second embodiment adopts image recognition to recognize the number of faces in the car so as to realize the purpose of counting the number of people in the car. The specific implementation mode is as follows: the voice playing module plays preset voice to remind the first vehicle to open the window, if the window is opened, the photographing module cannot enter the vehicle to photograph because the window is not opened, and the recognition of the number of people in the vehicle is inaccurate when the vehicle is photographed outside the vehicle; the second window detection module detects whether a window of the first vehicle is opened; shooting to obtain a first vehicle interior image of the first vehicle by using a shooting module if the window of the first vehicle is opened; and identifying all the faces in the first vehicle image through a face identification module, and counting the number of the faces obtained through identification to obtain the number of the persons in the first vehicle. The face recognition is a mature and high-precision technology, and the number of people in the vehicle can be accurately calculated through the number of recognized faces.

In the second embodiment, the photographing module performs multi-angle photographing on the interior of the first vehicle to obtain a plurality of first vehicle images, the face recognition module recognizes all faces in the first vehicle images, eliminates faces which are repeatedly recognized, and counts the number of the faces obtained through recognition to obtain the number of people in the first vehicle.

The shooting module shoots the interior of the first vehicle at multiple angles to obtain multiple first in-vehicle images, and because some angles cannot shoot the faces of all people in the vehicle, multiple shot images can be arranged on the faces of all people, and then the faces of people identified repeatedly are eliminated, so that the number of people in the vehicle can be accurately obtained.

EXAMPLE III

Different from the first embodiment, the in-vehicle head count recognition unit in the third embodiment includes:

the timing module is used for starting timing after the first license plate information is identified;

the display unit is used for displaying the coded information;

and the counting unit is used for counting the first times of accumulated scanning of the coded information by different mobile terminals in a preset time period from the time when the timing module starts timing, and acquiring the number of the personnel of the first vehicle based on the first times, wherein the accumulated times of scanning the coded information by each mobile terminal in the preset time period is at most one.

In order to ensure the safety of tourists, the people in the vehicle need to scan the health status before entering the scenic spot, so that the number of people in the vehicle is counted by the number-in-vehicle recognition unit while the health code is scanned by the user, and specifically, the timing module is used for starting timing after the first license plate information is recognized; then the display unit displays the coding information, such as the health code; utilizing a statistical unit to count the first times of cumulative scanning of the coded information by different mobile terminals, such as 4 times, in a preset time period from the time when the timing module starts timing, such as one minute, and obtaining the number of people of the first vehicle based on the first times, wherein the cumulative times of scanning the coded information by each mobile terminal in the preset time period is at most one time, and if a mobile phone A scans for 3 times, the contribution base number of the mobile terminal in calculating the first times is 1.

Wherein, in the third embodiment, the in-vehicle number of people recognition unit further includes: and the verification module is used for scanning the coded information based on the mobile terminal to obtain the health state information of the corresponding user, giving an alarm if the health state of the user does not meet the requirement, closing the barrier gate and informing the staff.

Referring to fig. 2, fig. 2-3 are schematic structural diagrams of display structures, where the number of the display structures may be flexibly set as required, for example, 4 display structures are convenient for users at 4 windows to scan codes, and the display unit specifically includes: a plurality of display structures, each of said display structures comprising:

the system comprises a camera 5, a processor, a display 2, an electric telescopic rod 6, an electric trolley 3, a guide rail 4 and a controller;

wherein one end of the guide rail extends to a detection area 1 where the first vehicle stops, the other end of the guide rail extends to a position far away from the detection area, and the guide rail is fixed on the ground; the electric trolley is connected with the guide rail in a sliding mode, and the controller is used for controlling the electric trolley and the electric telescopic rod; the lower end of the electric telescopic rod is fixedly connected with the top surface of the electric trolley, the upper end of the electric telescopic rod is fixedly connected with the lower end of the display, the display surface of the display faces the detection area, and the display is used for displaying the coded information; the camera is used for collecting a vehicle body image of the first vehicle in the detection area and transmitting the vehicle body image to the processor; the processor calculates a first distance between the first vehicle and the display according to the vehicle body image; and calculating a first window height of the first vehicle; based on the first distance, the controller adjusts the position of the electric trolley on the guide rail; based on the first vehicle window height, the controller adjusts the length of the electric telescopic rod.

Wherein, some scenic spots have only set up a fixed support and have demonstrated the place sign indicating number, and such mode can not make things convenient for all users in the car to sweep the sign indicating number, and the distance and the height of fixed support are changeable to the vehicle of stopping in a flexible way, sweep the sign indicating number in order to realize that the user conveniently, and this embodiment has improved the show structure, and the show structure all includes: the device comprises a camera, a processor, a display, an electric telescopic rod, an electric trolley, a guide rail and a controller; the camera can be used for shooting a vehicle image, the distance between the vehicle and the camera and the height of a vehicle window are obtained through the image, the distance between a display and the vehicle and the height of the display are further adjusted, and a user can conveniently scan a code after the adjustment, wherein one end of the guide rail extends to a detection area where the first vehicle stops, the other end of the guide rail extends to a position far away from the detection area, and the guide rail is fixed on the ground; the electric trolley is connected with the guide rail in a sliding mode, and the controller is used for controlling the electric trolley and the electric telescopic rod; then remove electric trolley towards the vehicle when the display is far away from the vehicle, when the display is near apart from the vehicle, then travel electric trolley to the direction of keeping away from the vehicle, when highly being greater than the door window height when the display this moment, then reduce the length of electric telescopic rod, when highly being less than the door window height when the display this moment, then improve the length of electric telescopic rod.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

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