Abstract:
An intelligent entrance guard unlocking method includes: transmitting electric energy of a power unit of a intelligent entrance guard in a wireless electromagnetic radiation via a transmit coil; receiving the electric energy via a receiver coil of a powerless smart key; capturing a face image of an user and storing the face image in a second storage unit of the powerless smart key; controlling a wireless transmit unit of the powerless smart key to transmit a wireless signal containing the face image to the intelligent entrance guard; obtaining a predefined face image from a first storage unit of the intelligent entrance guard and comparing the face image with the predefined face image; unlocking the intelligent entrance guard when the face image matches with the predefined face image and not unlocking the intelligent entrance guard when the face image does not match with the predefined face image.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims all benefits accruing under 35 U.S.C. §119 from TW Application No. 104103794, filed on Feb. 4, 2015, in the Taiwan Intellectual Property Office, the disclosure of which is incorporated herein by reference. The application is also related to co-pending applications entitled, “INTELLIGENT ENTRANCE GUARD UNLOCKING SYSTEM AND UNLOCKING METHOD THEREOF” Ser. Nos. 14/755,867, 14/755,846, 14/755,824, 14/755,911. Such applications have the same assignee as the instant application and are concurrently filed herewith. The disclosure of the above-identified applications is incorporated herein by reference. 
     FIELD 
     The subject matter herein generally relates to an unlocking system and an unlocking method for an intelligent entrance guard. 
     BACKGROUND 
     In order to control entrance to a room or a device, a security system or admittance system can be implemented. Traditional systems have included a physical key. A physical key requires the operator to maintain possession of the physical key for both entrance and preventing others from entrance. Other systems involve electronic devices that communicate via wired or wireless technology. These systems can include batteries to operate. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Many aspects of the present disclosure are better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the views. 
         FIG. 1  is a block diagram of an embodiment of an intelligent entrance guard unlocking system. 
         FIGS. 2 and 3  are a flowchart of an embodiment of an intelligent entrance guard unlocking method. 
     
    
    
     DETAILED DESCRIPTION 
     It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure. 
     Definitions that apply throughout this disclosure will now be presented below. 
     The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series and the like. 
       FIG. 1  shows an intelligent entrance guard unlocking system  1  for a vehicle. The intelligent entrance guard unlocking system  1  can be run on but not limited to an intelligent entrance guard  100  and a powerless smart key  200 . The intelligent entrance guard  100  can be mounted on the vehicle. The intelligent entrance guard  100  can automatically power the powerless smart key  200  when a distance between the powerless smart key  200  and the intelligent entrance guard  100  is in an allowed range. A identity information can be captured by the powerless smart key  200  and transmitted by thereof to the intelligent entrance guard  100  for identification and reorganization. 
     The intelligent entrance guard  100  can include a first controller  10 , a power unit  11 , a current transmitter  12 , a transmit coil  13 , a first storage unit  14 , a wireless receiver unit  15 , and an unlocking unit  16 . The first controller  10  can be coupled to the power unit  11  and the first storage unit  14 . The power unit  11  can supply electric energy. The power unit  11  can be a battery. In other embodiments, the power unit  11  can be coupled with a power source. The current transmitter  12  can electrically couple the power unit  11  with the transmit coil  13 . The wireless receiver unit  15  and the unlocking unit  16  can be coupled to the first controller  10 . 
     The first storage unit  14  can be used to store a predefined identification code and a predefined face image. In at least one embodiment, the predefined identification code can be an identification code of a smart key matched with the intelligent entrance guard  100 , and the face image can be an face image of a valid user of the intelligent entrance guard  100 . 
     The powerless smart key  200  can include a current receiver  21 , a receiver coil  22 , a current convertor  23 , a second controller  24 , a face capturing unit  25 , a second storage unit  26  and a wireless transmit unit  27 . The current receiver  21  can be electrically coupled to the receiver coil  22  and configured to receive electric energy via the receiver coil  22 , such that the powerless smart key  200  can be powered. The second controller  24  can be coupled to the wireless transmit unit  27  and the storage unit  26 . The face capturing unit  25  can be coupled to the second storage unit  26 . 
     The face capturing unit  25  can be used to capture a face image of a user. The face capturing unit  25  can be a camera. 
     The second storage unit  26  can be used to store the face image transmitted by the face capturing unit  25  and a unique identification code of the powerless smart key  200 . In other embodiments, the second storage unit  26  of the powerless smart key  200  can be omitted, and the face image transmitted by the face capturing unit  25  and the unique identification code can be stored in a storage unit coupled to the powerless smart key  200 . 
     The current transmitter  12  of the intelligent entrance guard  100  can transmit electric energy of the power unit  11  by wireless electromagnetic radiation via the transmit coil  13 . The current receiver  21 , if it is within a predefined distance of the transmit coil  13 , can receive the electric energy via the receiver coil  22  and power the powerless smart key  200  using the received electric energy. 
     The powerless smart key  200 , when being powered, is configured to be in a working mode. That is, the face capturing unit  25  can capture the face image of the user and store the face image in the second storage unit  26 . The second controller  24  can obtain the unique identification code and the face image from the second storage unit  26  and control the wireless transmit unit  27  to transmit a wireless signal containing the unique identification code and the face image. The wireless receiver unit  15  of the intelligent entrance guard  100  can receive the wireless signal from the powerless smart key  200 . The first controller  10  can obtain the unique identification code and the face image from the wireless signal. The first controller  10  can compare the unique identification code obtained from the wireless signal to the predefined identification code stored in the storage unit  14 . The first controller  10  can also compare the face image obtained from the wireless signal to the predefined face image stored in the first storage unit  14  of the intelligent entrance guard  100 . If the unique identification code matches the predefined identification code and the face image matches the predefined face image, the unlocking unit  16  of the intelligent entrance guard  100  can control to unlock the intelligent entrance guard  100 , such as unlock intelligent entrance guard door (not shown) of the intelligent entrance guard  100 . 
     The current transmitter  12  can electrically couple the power unit  11  with the transmit coil  13 . In an embodiment, the current transmitter  12  can be a current transmission circuit, and used to optimize the electric energy received from the power unit  11 . The current transmitter  12  can receive electric energy supplied by the power unit  11 , filter noises of the received electric energy, and transmit the filtered electric energy in a way of wireless electromagnetic radiation via the transmit coil  13 . In this embodiment, the electric energy can be alternating current. 
     The current receiver  21  can be electrically coupled to the receiver coil  22  and receive the electric energy from the transmit coil  13  via the receiver coil  22 . In all embodiment, the current receiver  21  can be a current receiving circuit and filter noises of the electric energy received from the receiver coil  22 . The electric energy can be alternating current. The receiver coil  22  can be coupled to the transmit coil  13 . The transmit coil  13  can cause the receiver coil  22  generate induced current in a form of electro-magnetic induction. The induced current can be alternating current. 
     The current convertor  23  can convert the alternating current into direct current and power the powerless smart key  200  via the current. 
     The face capturing unit  25  can capture the face of the user and further store the face image in the second storage unit  26 . 
     The second controller  24  can electrically couple the second storage unit  26  the wireless transmit unit  27  and obtain the unique identification code and the face image from the second storage unit  26  after the powerless smart key  200  has been powered. Further, the second controller  24  can control the wireless transmit unit  27  to transmit the wireless signal containing the unique identification code and the face image. 
     The first controller  10  can electrically couple the wireless receiver unit  15  to the first storage unit  14  respectively, and be used to receive the wireless signal via the wireless receiver unit  15 , and obtain the unique identification code and the face image from the wireless signal, and compare the predefined identification code obtained from the first storage unit  14  with the unique identification code, and compare the predefined face image obtained from the first storage unit  14  with the face image. The first controller  10  can include an image process module  101 , a detecting module  102 , a face tracking module  103 , a facial recognition module  104 , and an identification code verify module  105 . The modules of the first controller  10  also can include functionality by hardware or by integrated circuits, or software and hardware combinations, such as a special-purpose processor or a general purpose processor with special-purpose firmware. The image process module  101  can process the face image, by implementing enforcing comparisons, grey level process, and image illumination correction. The detecting module  102  can be used for gaining features from the processed face image. The detecting module  102  can ejecting features from the processed face image, the features can include histogram features, skin color, face size, positions of eyes, and a position of nose. The face tracking module  103  can be used for tracking features of the processed face image. The facial recognition module  104  can be used for determining the processed face image whether matching the e predefined face image obtained from the first storage unit  14 . 
     The unlocking unit  16  when the unique identification code is matched with the predefined identification code and the face image is matched with the predefined face image can unlock the intelligent entrance guard  100 . The unlocking unit  16  when the unique identification code is not matched with the predefined identification code and/or the face image is not matched with the predefined face image cannot unlock the intelligent entrance guard  100 . 
     In at least one embodiment, the intelligent entrance guard  100  can further include a first current-stabilizing unit  17 . The first current-stabilizing unit  17  can electrically couple the power unit  11  to the current transmitter  12  and stabilize the current of the power unit  11  to prevent the current to exceed a predefined value suddenly. If the current exceeds the predetermined value, the electronic components of the intelligent entrance guard  100  can be damaged. 
     In at least one embodiment, the intelligent entrance guard  100  can further include a light controlling unit  18  and a light emitting unit  19 . The light controlling unit  18  can electrically couple the first controller  10  to the light emitting unit  19 . The light controlling unit  18  control the light emitting unit  19  to emit light with one color to prompt the user that the verification is successful when the unique identification code is matched with the predefined identification code and the face image is matched with the predefined face image. The light controlling unit  18  can further control the light emitting unit  19  to emit light with another color and to prompt the user that the verification is unsuccessful when the unique identification code is not matched with the predefined identification code and/or the face image is not matched with the predefined face image. 
     In at least one embodiment, the powerless smart key  200  can further include a second current-stabilizing unit  28 . The second current-stabilizing unit  28  can couple the current receiver  21  to the current convertor  23  and stabilize the current of the received alternating current to prevent the current to exceed a predefined value suddenly, which may damage the electronic components of the powerless smart key  200 . 
     In at least one embodiment, if the received electric energy is direct current, the current convertor  23  can be thus omitted. 
     In at least one embodiment, the unique identification code matched with the predefined identification code can be that the unique identification code is equal to the predefined identification code and/or the unique identification code is uniquely corresponding to the predefined identification code. 
     In at least one embodiment, the face image matched with the predefined face image can be that the face image is same to the face image and/or the face image is uniquely corresponding to the face image. 
     The above verification process can include the verification of the identification code and the verification of the face image. In at least one embodiment, and the verification of the identification code can be omitted. Therefore, the second controller  24  can control the wireless transmit unit  27  to transmit the wireless signal containing the face image. The first controller  10  can compare the predefined face image obtained from the first storage unit  14  with the face image. The unlocking unit  16  can control to unlock the intelligent entrance guard  100  when the face image is matched with the predefined face image. The unlocking unit  16  cannot control to unlock the intelligent entrance guard  100  when the face image is not matched with the predefined face image. The light controlling unit  18  can control the light emitting unit  19  to emit light with one color to prompt the user that the verification is successful when the face image is matched with the predefined face image, and further control the light emitting unit  19  to emit light with another color to prompt the user that the verification is unsuccessful when the face image is not matched with the predefined face image. 
     The intelligent entrance guard unlocking method is provided by way of example, as there are a variety of ways to carry out the method. The control method described below can be carried out using the configurations illustrated in  FIG. 1 , for example, and various elements of these figures are referenced in explaining the example method. Each block shown in  FIGS. 2 and 3  represents one or more processes, methods, or subroutines carried out in the example method. Furthermore, the illustrated order of blocks is by example only and the order of the blocks can be changed. Additional blocks may be added or fewer blocks may be utilized, without departing from this disclosure. The example method can begin at block  201 . 
     Referring to  FIGS. 2 and 3 , at block  201 , a current transmitter of an intelligent entrance guard receives electric energy supplied by a power unit of the intelligent entrance guard, and further transmits the electric energy in a way of wireless electromagnetic radiation via a transmit coil of the intelligent entrance guard, and the electric energy is alternating current. The current transmitter of the intelligent entrance guard can electrically couple the power unit with a transmit coil of the intelligent entrance guard. In the embodiment, the current transmitter can be a current transmission circuit, which optimizes the electric energy received from the power unit. The current transmitter can receive electric energy supplied by the power unit, filter noises of the received electric energy, and transmit the filtered electric energy in a way of wireless electromagnetic radiation via the transmit coil. In one embodiment, the electric energy can be alternating current. 
     At block  202 , a current receiver of powerless smart key receives the electric energy transmitted by the transmit coil via a receiver coil of a powerless smart key. The electric energy an be alternating current. The current receiver can be electrically coupled to the receiver coil. The current receiver can receive electric energy from the transmit coil when the current receiver is within a predefined distance of the transmit coil. 
     At block  203 , a current convertor of the powerless smart key converts the alternating current into direct current and powers the powerless smart key via the received electric energy. 
     At block  204 , a face capturing unit of the powerless smart key captures a face image and further stores the face image in a second storage unit of the powerless smart key. 
     At block  205 , a second controller of the powerless smart key obtains a unique identification code and the face image from the second storage unit of the powerless smart key after the powerless smart key has been powered, and further controls a wireless transmit unit to transmit a wireless signal containing the unique identification code and the face image. 
     Referring to  FIG. 3 , at block  206 , a first controller determines the powerless smart key whether matches with the intelligent entrance guard, if yes, the process goes to block  207 , otherwise, the process goes to block  208 . The first controller receives the wireless signal via a wireless receiver unit of the intelligent entrance guard. The first controller obtains the unique identification code and the face image from the wireless signal. The first controller compares a predefined identification code obtained from a first storage unit of the intelligent entrance guard with the unique identification code, and further compares a predefined face image obtained from the first storage unit of the intelligent entrance guard with the face image. The first controller determines whether the unique identification code is matched with the predefined identification code and the face image is matched with the predefined face image, if yes, the process goes to block  207 , otherwise, the process goes to block  208 . 
     At block  207 , a light controlling unit of the intelligent entrance guard controls a light emitting unit of the intelligent entrance guard to emit light with one color to prompt the user that the verification is successful and an unlocking unit of the intelligent entrance guard unlocks the intelligent entrance guard. 
     At block  208 , the light controlling unit controls the light emitting unit of the intelligent entrance guard to emit light with another color to prompt the user that the verification is unsuccessful and the unlocking unit cannot unlock the intelligent entrance guard. 
     In other embodiments, the face capture module  231  can be designed to be other structures, for example, the face capture module  231  is a camera. 
     In other embodiments, the unlocking system for the intelligent entrance guard  100  is not limited to apply in a building, it can be used in other areas desiring identify reorganization for safety, such as unlocking for a vehicle, a box, a cabinet, an electronic device. 
     The embodiments shown and described above are only examples. Many details are often found in the art such as the other features of an intelligent entrance guard unlocking system and unlocking method thereof. Therefore, many such details are neither shown nor described. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the details, including in matters of shape, size, and arrangement of the parts within the principles of the present disclosure, up to and including the full extent established by the broad general meaning of the terms used in the claims. It will therefore be appreciated that the embodiments described above may be modified within the scope of the claims.