WO2018188494A1 - 基于可见光通信的光钥匙、感光锁、密码解锁装置及相关方法 - Google Patents

基于可见光通信的光钥匙、感光锁、密码解锁装置及相关方法 Download PDF

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Publication number
WO2018188494A1
WO2018188494A1 PCT/CN2018/081609 CN2018081609W WO2018188494A1 WO 2018188494 A1 WO2018188494 A1 WO 2018188494A1 CN 2018081609 W CN2018081609 W CN 2018081609W WO 2018188494 A1 WO2018188494 A1 WO 2018188494A1
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WO
WIPO (PCT)
Prior art keywords
signal
visible light
photosensitive
digital
module
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PCT/CN2018/081609
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English (en)
French (fr)
Inventor
李颖祎
Original Assignee
京东方科技集团股份有限公司
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Publication of WO2018188494A1 publication Critical patent/WO2018188494A1/zh

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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00817—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the lock can be programmed
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00857—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the data carrier can be programmed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems
    • H04B10/116—Visible light communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/502—LED transmitters
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • G07C2009/0023—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks with encription of the transmittted data signal
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • G07C2009/00785—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by light
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00817—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the lock can be programmed
    • G07C2009/00833—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the lock can be programmed by code input from switches

Definitions

  • the present disclosure relates to optical communication technologies, and in particular, to an optical key, a photosensitive lock, a password unlocking device and related methods based on visible light communication.
  • metal keys are usually used, and the confidentiality is extremely poor.
  • a person such as an office or a hotel
  • the metal key is hard and needs to be carried around, making key copying easy.
  • This type of electronic magnetic card lock usually adopts wireless radio frequency technology, and the technology has good penetration, but at the same time is easily interfered by other wireless radio frequency signals, causing leakage of unlocking information.
  • the present disclosure provides an optical key, a photosensitive lock, a password unlocking device and related methods based on visible light communication.
  • an optical key based on visible light communication can include a control module configured to receive and store the input digital cryptographic signal, a processor module configured to convert the digital cryptographic signal into a control signal, and a visible light drive module configured to The visible light module is driven according to the received control signal; the visible light module is configured to emit a visible light signal under the driving of the visible light driving module.
  • the optical key can also include an input module configured to input the digital cryptographic signal.
  • the visible light signal can have a blinking frequency associated with the digital cryptographic signal.
  • the optical key may be a mobile phone
  • the visible light module may be a light source integrated on the mobile phone.
  • a photosensitive lock based on visible light communication may include: a photodetection module configured to receive a visible light signal and convert the visible light signal into an electrical signal; a signal processing module configured to convert the electrical signal into a digital cryptographic signal; a signal comparison module And configured to compare the digital cryptographic signal with a preset digital cryptographic signal to obtain a comparison result; and a photosensitive lock control module configured to control whether the photosensitive lock is turned on according to the comparison result, wherein And when the digital password signal is consistent with the preset digital password signal, the photosensitive lock control module controls the photosensitive lock to be turned on.
  • the visible light signal can have a blinking frequency associated with the digital cryptographic signal.
  • the photosensitive lock may further include: a signal amplifier configured to amplify the visible light signal received by the photodetection module; and a filter configured to filter the visible light signal Light noise outside.
  • the photodetection module may include a photosensitive film.
  • the photosensitive film may include a grating structure having a plurality of photosensitive regions and a plurality of light transmissive regions, wherein the photosensitive regions are configured to receive the visible light signals.
  • the plurality of photosensitive regions and the plurality of light transmissive regions may be alternately arranged in parallel.
  • the photosensitive lock may further include a display screen and a prism film between the display screen and the photosensitive film, the prism film including a plurality of prisms, wherein the plurality of prisms are An orthographic projection on the photosensitive film is located in the light transmitting region.
  • the photosensitive region may include: a first electrode; a P-type absorption layer on the first electrode; a buffer layer on the P-type absorption layer; and a buffer layer on the buffer layer a window layer; and a current transmission line on the window layer.
  • a password unlocking device based on visible light communication.
  • the password unlocking device can include an optical key and a photosensitive lock in accordance with one or more embodiments disclosed in further detail above or below.
  • a method of transmitting a cryptographic signal based on visible light communication can include: receiving and storing the input digital cryptographic signal; converting the digital cryptographic signal into a control signal; and driving the visible light module in accordance with the received control signal such that the visible light module emits a visible light signal.
  • receiving and storing the entered digital cryptographic signal can include receiving an input digital cryptographic signal, performing port initialization to determine whether to force an interrupt, and storing the digital cryptographic signal without forcible interruption.
  • the visible light signal can have a blinking frequency associated with the digital cryptographic signal.
  • a method for unlocking based on visible light communication can include: receiving a visible light signal and converting the visible light signal into an electrical signal; converting the electrical signal to the digital cryptographic signal; comparing the digital cryptographic signal to a preset digital cryptographic signal to obtain Comparing the result; controlling whether to unlock according to the comparison result, wherein the unlocking is performed when the digital password signal is consistent with the preset digital password signal.
  • receiving the visible light signal and converting the visible light signal into the electrical signal may include: receiving the visible light signal; amplifying the received visible light signal; filtering the optical noise other than the visible light signal; and filtering the filtered The visible light signal is converted into an electrical signal.
  • the visible light signal has a blinking frequency associated with the digital cryptographic signal.
  • FIG. 1 is an example block diagram of an optical key in accordance with an embodiment of the present disclosure
  • FIG. 2 is an example block diagram of a photosensitive lock in accordance with an embodiment of the present disclosure
  • 3 is a photosensitive film of three examples in an embodiment of the present disclosure.
  • Figure 4 shows the positional relationship between the display screen, the prism film and the photosensitive film
  • Figure 5 shows the positional relationship between the prism and the light transmitting region on the prism film
  • FIG. 6 is a schematic structural view of a photosensitive region of a photosensitive film in an embodiment of the present disclosure
  • FIG. 7 is a block diagram showing an example of a visible light communication-based password unlocking apparatus according to an embodiment of the present disclosure
  • FIG. 8 is a flowchart of a method of transmitting a cryptographic signal based on visible light communication, in accordance with an embodiment of the present disclosure
  • FIG. 9 is a flow chart showing an example of a method of transmitting a cryptographic signal based on visible light communication according to another embodiment of the present disclosure.
  • FIG. 10 is a flowchart of an example of a method of unlocking based on visible light communication, in accordance with an embodiment of the present disclosure.
  • the visible light communication system mainly consists of a signal transmitting end and a signal receiving end.
  • the data at the signal transmitting end is converted to achieve electro-optical conversion.
  • a photodetector is usually used to detect the optical signal at the transmitting end of the signal, thereby realizing the conversion of the photoelectric signal. Then the signal processing method is used to restore the original data information.
  • the existing spectrum (especially the non-visible spectrum) resources are gradually strained.
  • spectrum resources can be effectively broadened.
  • light modulation such as visible light emitted by an LED can avoid interference like radio frequency communication, and thus is suitable for a point-to-point communication method with high confidentiality.
  • an optical key based on visible light communication capable of transmitting a visible light signal carrying unlocked password information is provided.
  • the visible light signal can avoid interference of other signals, is suitable for point-to-point communication, and has high confidentiality.
  • FIG. 1 is an example block diagram of an optical key in accordance with an embodiment of the present disclosure.
  • the optical key 1 includes a control module 12, a processor module 13, a visible light driving module 14, and a visible light module 15.
  • the optical key 1 may also include an optional input module 11.
  • the input module 11 can be configured to input a digital cryptographic signal.
  • the input module 11 can be implemented, for example, as a physical keyboard or a virtual keyboard, and the user can input a numeric password signal through a physical keyboard or a virtual keyboard, for example, entering a password "724.”
  • the input module transmits the received digital cryptographic signal input by the user to the control module 12.
  • Control module 12 can be configured to receive and store the entered digital cryptographic signals.
  • the control module 12 can receive the digital cryptographic signal from the input module and store the received digital cryptographic signal in a storage medium, such as a read only memory (ROM), a random access memory (RAM), Electrically Programmable Read Only Memory (EPROM), electrically erasable programmable read only memory (EEPROM).
  • ROM read only memory
  • RAM random access memory
  • EPROM Electrically Programmable Read Only Memory
  • EEPROM electrically erasable programmable read only memory
  • control module 12 may be implemented as (a) only hardware circuitry, such as only as analog and/or digital circuitry; (b) a combination of circuitry and software (and/or firmware), such as interworking A combination of a digital signal processor, software, and memory that implements the various functions to be performed.
  • the processor module 13 can be configured to convert the digital cryptographic signal into a control signal.
  • the processor module 13 can convert the digital cryptographic signal from the control module 12 into a control signal, such as converting a digital cryptographic signal in the form of an analog signal into a digital signal (eg, a binary digital signal). Control signal.
  • the digital cryptographic signal input by the user is "724"
  • the processor module 13 can convert the digital cryptographic signal into a digital signal "1011010100" as a control signal.
  • the processor module 13 may be any type that can implement a data processing function.
  • a suitable chip may be used for circuit construction or a computing module such as a single chip microcomputer may be used.
  • the visible light drive module 14 can be configured to drive the visible light module 15 in accordance with the received control signal such that the visible light module 15 emits a visible light signal.
  • the visible light drive module 14 can also be implemented as a hardware only circuit or a combination of circuitry and software (and/or firmware).
  • the visible light module 15 can be configured to emit a visible light signal under the drive of the visible light drive module.
  • the visible light signal can have a blinking frequency associated with the digital cryptographic signal input by the user.
  • the processor module 13 can convert the digital password into a binary digital signal "1011010100” as a control signal for driving the visible light module.
  • the visible light module is controlled by the control signal according to "light”, “dark light”, “bright light”, “bright light”, “dark light”, “bright light”, “dark light”, “bright light”, “dark light”, “bright light”, “dark light”. And the frequency of "dark light” flashes. Since "1011010100” corresponds to a digital password, the visible light emitted by the visible light module can carry digital password information, so the optical key can be used for the unlocking operation. Since the optical key adopts the optical communication method, point-to-point operation can be realized, signal interference can be avoided, and high security is achieved.
  • the representation of the visible light signal for the digital code is not intended to limit the scope of the present disclosure to such a particular flicker frequency, and those skilled in the art can readily know how to adapt when using other forms of expression (e.g., luminous intensity). With associated parameters and / or conditions.
  • the visible light module 15 can be, for example, an LED.
  • the maximum driving voltage of the LED depends on the specifications of the LED particles. Usually, a single driving voltage is between 0 and 20V.
  • the LED illumination can be driven in a semi-opening manner. Specifically, at a high voltage, the LED is in a lit state, and at a low voltage, the luminance of the LED is lowered, but not completely turned off. This drive can reduce energy losses.
  • the low voltage which accounts for 10% to 90% of the high voltage.
  • embodiments of the present disclosure are not limited thereto.
  • the specific specifications of the LED are determined by the photosensitive device to which the photosensitive key of the optical key is applied. When the voltage difference is small, the brightness of the LED does not change significantly, and the sensitivity requirement for the photosensitive device is increased.
  • the optical key of the present disclosure may be a mobile phone, which may be input to the control module 12 and the processor module 13 of the mobile phone after inputting a digital password in the program of the mobile phone, and then the visible light module 15 is driven by the visible light driving module 14. Visible light signal.
  • the visible light module 15 can be a light source integrated into the mobile phone, such as a flash of a mobile phone.
  • the visible light module 15 can also be a cryptographic transmitting device that is connected to a 3.5 mm CTIA standard jack of the handset.
  • a photosensitive lock based on visible light communication is provided.
  • 2 is an example block diagram of a photosensitive lock in accordance with an embodiment of the present disclosure.
  • the photosensitive lock 2 includes a photodetection module 21, a signal processing module 24, a signal comparison module 25, and a photosensitive lock control module 26.
  • the photosensitive lock 2 may also include a signal amplifier 22 and a filter 23.
  • the photodetection module 21 can be configured to receive a visible light signal and convert the visible light signal into an electrical signal.
  • the visible light signal can be from a light key and carry a signal related to the digital password entered by the user.
  • the visible light signal can have a blinking frequency associated with the digital password.
  • the photodetection module 21 can convert the visible light signal into an electrical signal for transmission to the signal processing module 24 for processing.
  • the photodetection module 21 can be a photodiode, for example, the photodiode can be integrated into the mechanical structure of the photosensitive lock.
  • the photodetection module 21 may be a photosensitive film.
  • FIG. 3 is a photosensitive film of three examples in the embodiment of the present disclosure.
  • the photosensitive film 3 may include a grating structure having a plurality of photosensitive regions 31 and a plurality of light transmitting regions 32.
  • the photosensitive area 31 can be configured to receive a visible light signal to generate an electrical signal associated with the digital password.
  • the photosensitive region 31 and the light transmitting region 31 of the photosensitive film 3 may be arranged at intervals in a strip shape (a), a block shape (b), or a dot shape (c). .
  • the photosensitive lock 2 may further include a display screen 5.
  • the photosensitive film 3 can be prepared on the outer surface of the display screen 5.
  • the photosensitive lock 2 may further include a prism film. 4 shows the positional relationship between the display screen 5, the prism film 4, and the photosensitive film 3; and FIG. 5 shows the positional relationship between the prism and the light transmitting region on the prism film.
  • the prism film 4 may have a plurality of prisms 41 which may be disposed between the display screen 5 and the photosensitive film 3. As shown in FIG.
  • the orthographic projection of the plurality of prisms 41 on the photosensitive film 3 may be located on the light transmitting region 32 of the photosensitive film 3, so that light from the display screen 5 is diffused by the refraction of the prism 41 to the photosensitive region of the photosensitive film 3. 31.
  • Fig. 6 is a schematic view showing the structure of a photosensitive region of a photosensitive film in an embodiment of the present disclosure.
  • the photosensitive region 31 may include a substrate 61, a first electrode 62 on the substrate 61, a P-type absorption layer 63 on the first electrode, and a buffer layer on the P-type absorption layer 63. 64; a window layer 65 on the buffer layer 64; and a current transmission line 66 on the window layer 65.
  • the substrate 61 may be formed of a resin material or a film material; the first electrode 62 may be molybdenum (Mo) deposited on the substrate 61; the material of the p-type absorption layer 63 may be Cu(InGa)Se2; a buffer layer The material of 64 may be cadmium sulfide (CdS); the material of the window layer 65 may be n-type heavily doped zinc oxide (ZnO); the material of the current transmission line 66 may be aluminum (AL).
  • Mo molybdenum
  • the material of the p-type absorption layer 63 may be Cu(InGa)Se2
  • the material of 64 may be cadmium sulfide (CdS)
  • the material of the window layer 65 may be n-type heavily doped zinc oxide (ZnO)
  • the material of the current transmission line 66 may be aluminum (AL).
  • the signal amplifier 22 can be used to enhance the visible light signal received by the photodetection module 21.
  • Filter 23 can be used to filter out optical noise other than visible light signals. In an embodiment of the present disclosure, the use of the signal amplifier 22 and the filter 23 can achieve detection of a very weak visible light signal, and can effectively suppress noise interference of the background light.
  • Signal processing module 24 can be configured to convert an electrical signal from the photodetection module to a digital cryptographic signal.
  • the photodetection module 21 receives "bright light”, “dark light”, “bright light”, “bright light”, “dark light”, “bright light”, “dark light”, “bright light”, “dark light”
  • the visible light signal can be converted into the following electrical signals: “high voltage / current”, “low voltage / current”, “high voltage / current”, “high voltage / current ", low voltage / current”, “high voltage / current, “low voltage / current”, “high voltage / current”, “low voltage / current” and “low voltage / current”.
  • Signal processing module 24 The electrical signal is converted to a digital signal "1011010100" which can then be converted to a digital password "724." It should be noted that the conversion of the electrical signal by the signal processing module 24 is merely exemplary and does not constitute an Limitations. Those skilled in the art can appropriately select the manner of signal conversion as needed, for example, the electrical signal can be directly converted into a digital cryptographic signal without undergoing analog to digital conversion.
  • the signal comparison module 25 is configured to compare the digital cryptographic signal with a preset digital cryptographic signal to obtain a comparison result. As an example, in the case where the digital cryptographic signal converted by the signal processing module 24 is "724", the signal comparison module 25 can compare the digital cryptographic signals preset by the digital cryptographic signal "724" so that the two are consistent in comparison.
  • the photosensitive lock control module 25 is configured to control whether the photosensitive lock 2 is turned on according to the comparison result. Specifically, in a case where the converted digital password signal is consistent with the preset digital password signal, the photosensitive lock control module 25 controls the photosensitive lock 2 to be turned on; in the case where the converted digital password signal is inconsistent with the preset digital password signal, The photosensitive lock control module 25 controls the photosensitive lock 2 not to be turned on.
  • the photosensitive lock 2 provided by the embodiment of the present disclosure can be disposed on the door as a door lock.
  • the photosensitive lock 2 can also be provided with a timing shutdown device that can save power for the photosensitive lock opening and closing unit.
  • the timing on/off time of the timed shutdown device can be freely set, for example, greater than or equal to 1 s.
  • a password unlocking device based on visible light communication.
  • the password unlocking device can include a light key and a photosensitive lock, such as an optical key and a photosensitive lock in accordance with one or more of the above embodiments.
  • a photosensitive lock such as an optical key and a photosensitive lock in accordance with one or more of the above embodiments.
  • FIG. 7 is an example block diagram of a visible light communication based password unlocking device, in accordance with an embodiment of the present disclosure.
  • the password unlocking means includes an optical key 1 and a photosensitive lock 2, for example, the optical key 1 in the embodiment shown in Fig. 1 and the photosensitive lock 2 in the embodiment shown in Fig. 2.
  • the optical key 1 can be configured to convert the digital cryptographic signal into a visible light signal that blinks at a certain frequency and transmit the visible light signal to the photosensitive lock 2;
  • the photosensitive lock 2 is configured to receive the visible light signal and convert the visible light signal into a digital password
  • the signal is then compared to a preset digital cryptographic signal to determine if the photosensitive lock 2 is open.
  • the digital cryptographic signal coincides with the preset digital cryptographic signal, the photosensitive lock 2 is turned on.
  • the optical key 1 may include an optional input module 11, a control module 12, a processor module 13, a visible light drive module 14, and a visible light module 15.
  • the optional input module 11 can be configured to input a digital cryptographic signal;
  • the control module 12 is configured to receive and store the input digital cryptographic signal;
  • the processor module 13 is configured to convert the digital cryptographic signal into a control signal;
  • the visible light drive module 14 is configured to drive visible light module 15 to emit visible light in accordance with the received control signal; visible light module 15 is configured to emit visible light signals to photosensitive lock 2 under the drive of visible light drive module 14.
  • the photosensitive lock 2 may include a photodetection module 21, an optional signal amplifier 22, an optional filter 23, a signal processing module 24, and a signal ratio. Pair module 25 and photosensitive lock control module 26.
  • the photodetection module 21 is configured to receive the visible light signal carrying the digital cryptographic information from the optical key and convert the visible light signal into an electrical signal; the signal amplifier 22 can be used to enhance the visible light signal received by the photodetecting module 21; the filter 23 Can be used to filter out optical noise other than visible light signals.
  • the signal processing module 24 can be configured to convert the electrical signal into a digital cryptographic signal; the signal comparison module 25 is configured to compare the digital cryptographic signal with a preset digital cryptographic signal to determine if the two signals are identical and The comparison result is transmitted to the photosensitive lock control module 26; the photosensitive lock control module 26 is configured to control whether the photosensitive lock 2 is turned on according to the comparison result.
  • the photosensitive lock control module 26 controls the photosensitive lock 2 to be turned on when the digital password signal coincides with the preset digital password signal.
  • the photosensitive lock 2 may also include a display screen 5 (shown in Figure 4). .
  • the photodetection module 21 is a photodiode that is integrated behind the display of the photosensitive lock.
  • the photodetection module 21 may also be the photosensitive film 3.
  • the photosensitive film 3 can be formed directly on the surface of the display screen 5.
  • the prism film 4 may be disposed between the display screen 5 and the photosensitive film 3. The prism film 4 can direct light from the display screen 5 below the photosensitive region to the photosensitive region by refraction.
  • a method of transmitting a password based on visible light communication is provided.
  • the method can be used in an optical key in accordance with the present disclosure, such as the optical key disclosed in detail in one or more of the above embodiments.
  • the method includes the following steps, which may be performed in a given order or in a different order.
  • additional method steps not listed may be provided.
  • two or more or even all of the method steps can be performed at least partially simultaneously.
  • the method steps can be repeated twice or even more than twice.
  • the method for transmitting a cryptographic signal based on visible light communication may be implemented by an optical key, for example, by controlling a flash light of the mobile phone by a program on the mobile phone to emit a visible light signal related to the password information, so as to transmit the visible light carrying the cryptographic information.
  • the signal is sent to the lock device for unlocking.
  • FIG. 8 is a flowchart of a method of transmitting a cryptographic signal based on visible light communication, in accordance with an embodiment of the present disclosure. As shown in FIG. 8, the method includes steps S81-S83.
  • the input digital cryptographic signal is received and stored.
  • the digital cryptographic signal can be input by the user through, for example, a physical keyboard or a virtual keyboard.
  • the digital cipher signal is converted into a control signal.
  • the digital cryptographic signal can be converted into a control signal by any method, for example, by digital-to-analog conversion.
  • a specific example may refer to an example of an example of a light key.
  • step S83 the visible light module is driven according to the received control signal, so that the visible light module emits a visible light signal.
  • the optical module can emit a visible light signal according to the control signal, reference may be made to an example of an example of the optical key.
  • the method for transmitting a cipher signal may include: S91, inputting a digital cipher signal on the optical key; S92, performing port initialization; S93, determining whether to forcibly interrupt, if forced interrupt, returning to S91, if there is no forced interruption And executing S94; S94, converting the digital cryptographic signal into a control signal; s95, driving the visible light module to emit visible light according to the received control signal.
  • the visible light signal may carry digital password information by: when a visible light module (such as a flash of a mobile phone or an LED light connected to a mobile phone) emits a visible light signal that blinks at a certain frequency, it may be set. For example, 6 cycles, each cycle has a duration of 0.5 seconds.
  • a visible light module such as a flash of a mobile phone or an LED light connected to a mobile phone
  • the emitted visible light signal flashes in the order of bright light, no light, bright light, no light, bright light, and no light at a frequency of 0.5 seconds each time.
  • the visible light signal may carry digital password information by: when a visible light module (such as a flash of a mobile phone or an LED light connected to a mobile phone) emits a visible light signal that blinks at a certain frequency, For example, 8 cycles are set, and the duration of each cycle is 1 second.
  • a visible light module such as a flash of a mobile phone or an LED light connected to a mobile phone
  • the visible light signal is in the low voltage lighting state (dark light), it is recorded as data 0.
  • the visible light signal is recorded in the high voltage lighting state (bright light)
  • it is recorded as data 1.
  • the emitted visible light signal is sequentially flashed in the order of light, dark light, bright light, bright light, dark light, bright light, bright light, and bright light at a frequency of 1 second each time.
  • a method of unlocking based on visible light communication is also provided.
  • the method can be used in a photosensitive lock in accordance with the present disclosure, such as the photosensitive lock disclosed in detail in one or more of the above embodiments.
  • the method includes the following steps, which may be performed in a given order or in a different order.
  • additional method steps not listed may be provided.
  • two or more or even all of the method steps can be performed at least partially simultaneously.
  • the method steps can be repeated twice or even more than twice.
  • the method of unlocking based on visible light communication can be implemented by a photosensitive lock.
  • the photosensitive lock can receive a visible light signal, for example, a flash light related to the password information is controlled by a program on the mobile phone to control the flash of the mobile phone to perform an unlocking operation based on the received visible light signal.
  • FIG. 10 is a flowchart of an example of a method of unlocking based on visible light communication, in accordance with an embodiment of the present disclosure. As shown in FIG. 10, the method includes steps S101-S104.
  • a visible light signal is received and the visible light signal is converted into an electrical signal, such as by a photodetection module.
  • the visible light signal may be a signal transmitted by the optical key based on a digital cryptographic signal input by the user, and the visible light signal may carry digital cryptographic information, for example, the digital cryptographic information may be embodied by a blinking frequency of visible light.
  • the input digital password is 101010 (or an analog signal corresponding to such a binary digital signal)
  • the visible light signal may flash in the order of bright light, no light, bright light, no light, bright light, and no light.
  • an electrical signal such as a voltage signal or a current signal, can be generated.
  • the electrical signal is converted to a digital cryptographic signal, such as by a signal processing module.
  • the electrical signal since the electrical signal is generated based on the visible light signal carrying the digital cryptographic signal, the electrical signal can be restored to a digital cryptographic signal, such as 101010.
  • step S103 the digital cipher signal is compared to a preset digital cipher signal.
  • the unlock code of the photosensitive lock can be preset and stored in, for example, a memory of the photosensitive lock. After the unlock password information is generated based on the visible light signal, the generated unlock password information may be compared with a preset unlock password to determine whether to unlock.
  • step S104 it is determined whether or not to unlock based on the comparison result in step S103.
  • the unlocking operation is performed; otherwise, the unlocking operation is not performed.
  • the visible light signal after receiving the visible light signal, the visible light signal can be first amplified and filtered to increase the strength of the signal and reduce the noise, thereby improving accuracy and sensitivity.
  • the units or modules described herein may be implemented as a combination of a processor and a memory, where the processor executes a program stored in the memory to implement the functionality of the respective unit or module.
  • the units or modules described herein may also be implemented in a complete hardware implementation, including an application specific integrated circuit (ASIC), field programmable gate array (FPGA), and the like.
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array

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Abstract

一种基于可见光通信的光钥匙（1）、感光锁（2）、密码解锁装置及相关方法，光钥匙（1）包括控制模块（12），其被配置为接收并存储所输入的数字密码信号；处理器模块（13），其被配置为将数字密码信号转换成控制信号；可见光驱动模块（14），其被配置为按照接收到的控制信号来驱动可见光模块（15）；以及可见光模块（15），其被配置为在可见光驱动模块（14）的驱动下发出可见光信号。

Description

基于可见光通信的光钥匙、感光锁、密码解锁装置及相关方法
相关申请的交叉引用
本申请要求于2017年04月11日递交的中国专利申请第201710233926.9号的优先权和权益，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开涉及光通信技术，尤其涉及一种基于可见光通信的光钥匙、感光锁、密码解锁装置及相关方法。
背景技术
目前，对于机械门锁，通常采用的是金属钥匙，保密性极差。例如，办公室、酒店等人员流动大的场所，当有一个人的钥匙丢失时，需要对门锁进行更换，十分麻烦。另外，金属钥匙的材质坚硬，需要随身携带，钥匙复制容易。
对于电子磁卡锁，通过读取卡片信息，采用卡片复制设备，卡片上的开锁信息完全可以被复制，在安全隐患方面仍然存在较大的漏洞，很难推广应用。这种电子磁卡锁通常采用无线射频技术，该技术有很好的穿透性，但是同时容易受到其它无线射频信号的干扰，造成开锁信息的泄漏。
发明内容
本公开提供一种基于可见光通信的光钥匙、感光锁、密码解锁装置及相关方法。
在公开的一个方面，提供一种基于可见光通信的光钥匙。该光钥匙可以包括：控制模块，其被配置为接收并存储所输入的数字密码信号；处理器模块，其被配置为将所述数字密码信号转换成控制信号；可见光驱动模块，其被配置为按照接收到的所述控制信号来驱动可见光模块；可见光模块，其被配置为在所述可见光驱动模块的驱动下发出可见光信号。
在示例的实施例中，光钥匙还可以包括输入模块，其被配置为输入所述数字密码信号。
在示例的实施例中，所述可见光信号可以具有与所述数字密码信号相关的闪烁频率。
在示例的实施例中，所述光钥匙可以为手机，所述可见光模块可以为集成在所述手机上的光源。
在本公开的另一方面，提供一种基于可见光通信的感光锁。该感光锁可以包括：光电检测模块，其被配置为接收可见光信号并将所述可见光信号转换成电信号；信号处理模块，其被配置为将所述电信号转换成数字密码信号；信号对比模块，其被配置为将所述数字密码信号与预置的数字密码信号相比较，以获得比较结果；以及感光锁控制模块，其被配置为根据所述比较结果控制所述感光锁是否开启，其中，当所述数字密码信号与所述预置的数字密码信号一致时，所述感光锁控制模块控制所述感光锁开启。
在示例的实施例中，所述可见光信号可以具有与所述数字密码信号相关的闪烁频率。
在示例的实施例中，所述感光锁还可以包括：信号放大器，其被配置为放大所述光电检测模块所接收到的所述可见光信号；和滤波器，其被配置为过滤所述可见光信号以外的光噪声。
在示例的实施例中，所述光电检测模块可以包括感光膜。
在示例的实施例中，所述感光膜可以包括具有多个光敏区和多个透光区的光栅结构，其中所述光敏区被配置为用于接收所述可见光信号。
在示例的实施例中，所述多个光敏区和所述多个透光区可以交替平行布置。
在示例的实施例中，所述感光锁还可以包括显示屏和位于所述显示屏和所述感光膜之间的棱镜膜，所述棱镜膜包括多个棱镜，所述多个棱镜在所述感光膜上的正投影位于所述透光区。
在示例的实施例中，所述光敏区可以包括：第一电极；位于所述第一电极上的P型吸收层；位于所述P型吸收层上的缓冲层；位于所述缓冲层上的窗口层；以及位于所述窗口层上的电流传输线。
在本公开的又一方面，提供一种基于可见光通信的密码解锁装置。该 密码解锁装置可以包括根据上面或下面进一步详细公开的一个多个实施例的光钥匙和感光锁。
在本公开的又一方面，提供一种基于可见光通信发送密码信号的方法。该方法可以包括：接收并存储所输入的数字密码信号；将所述数字密码信号转换成控制信号；以及按照接收到的所述控制信号驱动可见光模块，使得所述可见光模块发出可见光信号。
在示例的实施例中，接收并存储所输入的数字密码信号可以包括：接收输入的数字密码信号；进行端口初始化，确定是否强行中断；在没有强行中断的情况下，存储所述数字密码信号。
在示例的实施例中，所述可见光信号可以具有与所述数字密码信号相关的闪烁频率。
在本公开的又一方面，提供一种用于基于可见光通信解锁的方法。该方法可以包括：接收可见光信号并将所述可见光信号转换成电信号；将所述电信号转换成所述数字密码信号；将所述数字密码信号与预置的数字密码信号相比较，以获得比较结果；根据所述比较结果控制是否解锁，其中，当所述数字密码信号与所述预置的数字密码信号一致时，进行解锁。
在示例的实施例中，接收可见光信号并将所述可见光信号转换成电信号可以包括：接收可见光信号；放大所接收到的可见光信号；过滤所述可见光信号以外的光噪声；以及将过滤后的所述可见光信号转换成电信号。
在示例的实施例中，所述可见光信号具有与所述数字密码信号相关的闪烁频率。
附图说明
图1为根据本公开的实施例的光钥匙的示例框图；
图2为根据本公开的实施例的感光锁的示例框图；
图3为在本公开的实施例中的三种示例的感光膜；
图4示出显示屏、棱镜膜和感光膜之间的位置关系；
图5示出棱镜膜上的棱镜和透光区之间的位置关系；
图6为本公开的实施例中的感光膜的光敏区的结构示意图；
图7为根据本公开的实施例的基于可见光通信的密码解锁装置的示例 框图；
图8为根据本公开的实施例的基于可见光通信发送密码信号的方法的流程图；
图9为本公开的另一实施例的基于可见光通信发送密码信号的方法的示例流程图；以及
图10为根据本公开的实施例的基于可见光通信解锁的方法的示例的流程图。
具体实施方式
下面，结合附图，对本公开的结构以及工作原理等作进一步的说明。
值得注意的是，以下附图和示例并不意味着限制本公开的范围。在使用已知的组件(或方法或过程)可以部分或全部实现本公开的特定元件的情况下，将仅描述对理解本公开所需要的这种已知组件(或方法或过程)的那些部分，并且这种已知组件的其它部分的详细描述将被省略以便不会混淆本公开。进一步地，各种实施例通过说明的方式包含与在此涉及的组件等同的现在和未来已知的等同物。
除非上下文中另外明确地指出，否则在本文和所附权利要求中所使用的词语的单数形式包括复数，反之亦然。因而，当提及单数时，通常包括相应术语的复数。相似地，措辞“包含(comprise)”、“包含(include)”以及它们的语法变型将解释为包含在内而不是独占性地，除非本文中明确禁止这样的解释。在本文中使用术语“实例”之处，特别是当其位于一组术语之后时，所述“实例”仅仅是示例性的和阐述性的，且不应当被认为是独占性的或广泛性的。
随着光通信技术的发展，可见光(例如，由LED发出的可见光)通信已经被逐渐应用到日常生活中。可见光通信系统主要由信号发射端和信号接收端组成。在信号发射端的数据被转换以实现的电光转换。信号的接收端，通常采用光电检测器检测信号发射端的光信号，进而实现光电信号的转换。然后采用信号处理的方法还原出原始的数据信息。
随着通信技术的不断发展，现有的频谱(尤其是非可见光频谱)资源逐渐紧张。基于例如LED的可见光通信的方式，可以有效的拓宽频谱资源。 在可见光通信中，对例如LED发射的可见光进行光调制，可以避免像射频通信的干扰，因此适合点对点的通信方式，具有较高保密性。在本公开的一个方面，提供一种基于可见光通信的光钥匙，其能够发射携带由解锁密码信息的可见光信号。这种可见光信号能够避免其他信号的干扰，适合点对点的通信方式，具有较高的保密性。
图1为根据本公开的实施例的光钥匙的示例框图。如图1所示，该光钥匙1包括控制模块12、处理器模块13、可见光驱动模块14和可见光模块15。在可选的实施例中，光钥匙1还可以包括可选的输入模块11。
输入模块11可以被配置为输入数字密码信号。作为示例，输入模块11可以实现为例如物理键盘或者虚拟键盘，用户可以通过物理键盘或虚拟键盘输入数字密码信号，例如，输入密码“724”。在该实施例中，输入模块将接收到的由用户输入的数字密码信号传送给控制模块12。
控制模块12可以被配置为接收并存储所输入的数字密码信号。在该实施例中，控制模块12可以接收来自于输入模块的数字密码信号，并将接收到的数字密码信号存储在存储介质中，诸如只读存储器(ROM)、随机存取存储器(RAM)、电可编程只读存储器(EPROM)、电可擦除可编程只读存储器(EEPROM)。
在示例的实施例中，控制模块12可以被实现为(a)仅硬件电路，诸如仅实现为模拟和/或数字电路；(b)电路和软件(和/或固件)的组合，诸如协同工作以实现待执行的各种功能的数字信号处理器、软件和存储器的组合。
处理器模块13可以被配置为将数字密码信号转换成控制信号。在该实施例中，处理器模块13可以将来自于控制模块12的数字密码信号转换成控制信号，例如将以模拟信号的形式的数字密码信号转换成以数字信号(例如二进制数字信号)的形式的控制信号。作为示例，用户输入的数字密码信号为“724”，处理器模块13可以将该数字密码信号转换成数字信号“1011010100”，作为控制信号。作为非限制性示例，处理器模块13可以是可以实现数据处理功能的任何类型，例如，可以采用适合的芯片进行电路搭建也可以采用单片机等具有运算能力的模块
可见光驱动模块14可以被配置为按照接收到的控制信号来驱动可见 光模块15，使得可见光模块15发出可见光信号。在该实施例中，该可见光驱动模块14同样可以实现为仅硬件电路或者电路与软件(和/或固件)的组合。
可见光模块15可以被配置为在可见光驱动模块的驱动下发出可见光信号。在具体的实施例中，可见光信号可以具有与用户输入的数字密码信号相关的闪烁频率。作为一个示例，在接收到信号“1”时，可见光模块处于高电压点亮状态(发出亮光)；在接收到信号“0”时，处于低电压暗状态(发出暗光)。在输入的数字密码是:“724”的情况下，处理器模块13可以将该数字密码转换成二进制的数字信号“1011010100”作为驱动可见光模块的控制信号。可见光模块在该控制信号的控制下，按照“亮光”、“暗光”、“亮光”、“亮光”、“暗光”、“亮光”、“暗光”、“亮光”、“暗光”和“暗光”的频率闪烁。由于“1011010100”对应于数字密码，因此，可见光模块发出的可见光可以携带有数字密码信息，因此可以使用这种光钥匙进行解锁操作。由于这种光钥匙采用光通信的方式，可以实现点对点的操作，可以避免信号干扰，并具有较高的安全性。
然而，可见光信号的对于数字密码的表现形式不旨在将本公开的范围限定在这种特定的闪烁频率，当使用其他表现形式(例如发光强度)时，本领域技术人员可以容易地知道如何适配相关的参数和/或条件。
通过示例的方式，可见光模块15可以为例如LED。在本公开的实施例中，LED最大驱动电压根据LED颗粒的规格而定。通常，单颗驱动电压介于0～20V之间。当LED进行明暗闪烁(即，在高位电压时处于点亮状态，在低位电压时处于关闭状态)时，占空比约为50％，因此会造成整体亮度的降低。作为替代的实施例，可以采用半开闭的方式驱动LED发光。具体地，在高位电压时，LED处于点亮状态，在低位电压时，降低LED的发光亮度，但是不完全关闭。这种驱动方式可以减少能量损失。低位电压，占高位电压的比例为10％～90％。然而本公开的实施例不限于此。LED的具体规格以应用该光钥匙开启的感光锁的感光器件而定。电压差值较小时，LED的亮度变化不明显，对感光器件的灵敏度要求提高。
在示例的实施例中，本公开的光钥匙可以是手机，可以在手机的程序中输入数字密码后传输给手机的控制模块12和处理器模块13，再由可见 光驱动模块14驱动可见光模块15发出可见光信号。可见光模块15可以为集成到手机上的光源，例如，手机的闪光灯。替代地，可见光模块15还可以是连接到手机的3.5mmCTIA标准插口的密码发射装置。
在本公开的另一方面，提供一种基于可见光通信的感光锁。图2为根据本公开的实施例的感光锁的示例框图。如图2所示，该感光锁2包括光电检测模块21、信号处理模块24、信号比对模块25及感光锁控制模块26。在可选的实施例中，感光锁2还可以包括信号放大器22和滤波器23。
光电检测模块21可以被配置为接收可见光信号并将可见光信号转换成电信号。在该实施例中，可见光信号可以为来自于光钥匙，并且携带有与用户输入的数字密码有关的信号。在一个示例中，可见光信号可以具有与数字密码相关的闪烁频率。光电检测模块21在接收到携带有数字密码信号的可见光信号之后，可以将可见光信号转换为电信号，以便发送给信号处理模块24进行处理。
作为示例，光电检测模块21可以为感光二极管，例如，感光二极管可以集成到感光锁的机械结构内部。
作为另一个示例，光电检测模块21可以为感光膜。图3为在本公开的实施例中的三种示例的感光膜。如图3所示，感光膜3可以包括具有多个光敏区31和多个透光区32的光栅结构。光敏区31可以被配置为接收可见光信号，以生成与数字密码有关的电信号。在示例的实施例中，如图3所示出的，感光膜3的光敏区31和透光区31可以按照条状(a)、块状(b)或点状(c)互相间隔排布。
在本公开的实施例中，感光锁2还可以包括显示屏5。感光膜3可以制备在显示屏5的外表面上。在这种情况下，为了避免感光膜3的光敏区31遮挡来自显示屏5的光从而影响显示屏的显示，感光锁2还可以包括棱镜膜。图4示出显示屏5、棱镜膜4和感光膜3之间的位置关系；图5示出棱镜膜上的棱镜和透光区之间的位置关系。如图4所示，棱镜膜4可以具有多个棱镜41，棱镜膜4可以设置在显示屏5和感光膜3之间。如图5所示，该多个棱镜41在感光膜3的正投影可以位于感光膜3的透光区32上，使得来自显示屏5的光通过棱镜41的折射扩散到感光膜3的光敏区31。
图6为本公开的实施例中的感光膜的光敏区的结构示意图。如图6所示，所述光敏区31可以包括基材61、位于基材61上的第一电极62、位于第一电极上的P型吸收层63、位于P型吸收层63上的缓冲层64；位于缓冲层64上的窗口层65；以及位于窗口层65上的电流传输线66。作为示例，基材61可以由树脂材料或薄膜材料形成；第一电极62可以为沉积在基材61上的钼(Mo)；p型吸收层63的材料可以为Cu(InGa)Se2；缓冲层64的材料可以为硫化镉(CdS)；窗口层65的材料可以为n型重掺杂氧化锌(ZnO)；电流传输线66的材料可以为铝(AL)。
信号放大器22可以用来加强光电检测模块21接收到的可见光信号。滤波器23可以用来过滤可见光信号以外的光噪声。在本公开的实施例中，信号放大器22和滤波器23的使用可以实现对非常微弱的可见光信号的检测，并且能够有效地抑制背景光的噪声干扰。
信号处理模块24可以被配置为将来自于光电检测模块的电信号转换成数字密码信号。作为示例，当光电检测模块21接收到以“亮光”、“暗光”、“亮光”、“亮光”、“暗光”、“亮光”、“暗光”、“亮光”、“暗光”和“暗光”的频率闪烁的可见光信号时，可以将可见光信号转换成如下的电信号：“高位电压/电流”、“低位电压/电流”、“高位电压/电流”、“高位电压/电流”、“低位电压/电流”、“高位电压/电流、“低位电压/电流”、“高位电压/电流”、“低位电压/电流”和、“低位电压/电流”。信号处理模块24将该电信号转换成数字信号“1011010100”，然后可以将该数字信号转换成数字密码“724”。需要说明的是，信号处理模块24对电信号的转换仅仅是示例性的，其不构成对本公开的限制。本领域技术人员可以根据需要适宜地选择信号转换的方式，例如，可以直接将电信号转换成数字密码信号而不经历模数转换。
信号对比模块25被配置为将数字密码信号与预置的数字密码信号相比较，以获得比较结果。作为示例，信号处理模块24转换的数字密码信号为“724”的情况下，信号对比模块25可以将该数字密码信号“724”预置的数字密码信号比较，以便二者是否一致的比较结果。
感光锁控制模块25被配置为根据比较结果控制感光锁2是否开启。具体地，在转换的数字密码信号与预置的数字密码信号一致的情况下，感光 锁控制模块25控制感光锁2开启；在转换的数字密码信号与预置的数字密码信号不一致的情况下，感光锁控制模块25控制感光锁2不开启。
本公开的实施例提供的感光锁2能够作为门锁设置在门上。在进一步的实施例中，感光锁2还可以设置有定时关机装置，该定时关机装置可以为感光锁开闭单元节约功耗。在该实施例中，定时关机装置的定时开关机时间可以自由设置，例如，大于或等于1S。
在本公开的又一方面，提供一种基于可见光通信的密码解锁装置。该密码解锁装置可以包括光钥匙和感光锁，诸如根据上面的一个或多个实施例中的光钥匙和感光锁。因此，对于该密码解锁装置的可选实施例，可以参考上述光钥匙和感光锁的实施例。
图7为根据本公开的实施例的基于可见光通信的密码解锁装置的示例框图。如图7所示，该密码解锁装置包括光钥匙1和感光锁2，例如，图1所示的实施例中的光钥匙1和图2所示的实施例中的感光锁2。光钥匙1可以被配置为将数字密码信号转换为按照一定频率闪烁的可见光信号，并将该可见光信号传输给感光锁2；感光锁2被配置为接收可见光信号，并将可见光信号转换成数字密码信号，然后将数字密码信号与预置的数字密码信号相比对，以确定所述感光锁2是否开启。示例地，当数字密码信号与预置的数字密码信号一致时，感光锁2开启。
如在图2所示的实施例中描述的，光钥匙1可以包括可选的输入模块11、控制模块12、处理器模块13、可见光驱动模块14和可见光模块15。可选的输入模块11可以被配置为输入数字密码信号；控制模块12被配置为接收并存储所输入的数字密码信号；处理器模块13被配置为将数字密码信号转换成控制信号；可见光驱动模块14被配置为按照接收到的控制信号来驱动可见光模块15发出可见光；可见光模块15被配置为在可见光驱动模块14的驱动下向感光锁2发出可见光信号。
如在图2所示的涉及感光锁的实施例中已经描述的，该感光锁2可以包括光电检测模块21、可选的信号放大器22、可选的滤波器23、信号处理模块24、信号比对模块25及感光锁控制模块26。光电检测模块21被配置为接收来自于光钥匙的携带有数字密码信息的可见光信号并将可见光信号转换成电信号；信号放大器22可以用来加强光电检测模块21接收到的 可见光信号；滤波器23可以用来过滤可见光信号以外的光噪声。信号处理模块24可以被配置为将电信号转换成数字密码信号；信号比对模块25被配置为将数字密码信号与预置的数字密码信号相比对，确定这两个信号是否相同，并将比对结果传输给感光锁控制模块26；感光锁控制模块26被配置为根据比对结果控制感光锁2是否开启。在该实施例中，当数字密码信号与预置的数字密码信号一致时，感光锁控制模块26控制感光锁2开启。
在示例的实施例中，感光锁2还可以包括有显示屏5(如图4所示)。。
通过示例的方式，光电检测模块21为集成到感光锁的显示屏后面的感光二极管。
作为另一示例，如上所述，光电检测模块21还可以为感光膜3。在该实施例中，感光膜3可以直接形成在显示屏5的表面。在这种情况下，为了使得感光膜3不遮挡来自于显示屏5的光从而影响显示屏的显示，可以在显示屏5和感光膜3之间设置棱镜膜4。该棱镜膜4可以将来自显示屏5的位于光敏区下方的光通过折射引导到光敏区上方。
在本公开的又一方面，提供一种基于可见光通信发送密码的方法。该方法可以在根据本公开的光钥匙中使用，诸如上面的一个或多个实施例中详细公开的光钥匙。因此，对于该方法的可选实施例，可以参考光钥匙的实施例。该方法包括以下步骤，其可以以给定的顺序或以不同的顺序执行。此外，可以提供未列出的附加方法步骤。此外，可以至少部分地同时执行两个或更多个或甚至所有的方法步骤。此外，方法步骤可以重复执行两次或甚至多于两次。
在示例的实施例中，该基于可见光通信发送密码信号的方法可以通过光钥匙实现，例如，通过手机上的程序控制手机的闪光灯发出与密码信息有关的可见光信号，以便将携带有密码信息的可见光信号发送给锁装置进行解锁。
图8为根据本公开的实施例的基于可见光通信发送密码信号的方法的流程图。如图8所示，该方法包括步骤S81-S83。
在步骤S81，接收并存储所输入的数字密码信号。在该步骤中，可以由用户通过例如物理键盘或虚拟键盘输入数字密码信号。
在步骤S82，将数字密码信号转换成控制信号。在该步骤中，可以采 用任何方法将数字密码信号转换成控制信号，例如，通过数模转换的方法。具体的示例可以参考关于光钥匙的示例的实施例。
在步骤S83，按照接收到的控制信号驱动可见光模块，使得可见光模块发出可见光信号。在该步骤中，关于如何根据控制信号驱动可将光模块发出可见光信号的实施例，可以参考关于光钥匙的示例的实施例。
图9为本公开的另一实施例的基于可见光通信发送密码信号的方法的示例流程图。如图9所示，该发送密码信号的方法可以包括：S91，在光钥匙上输入数字密码信号；S92，进行端口初始化；S93，判断是否强行中断，如果强行中断则返回S91，如果没有强行中断，则执行S94；S94，将数字密码信号转换成控制信号；s95，按照接收到的控制信号驱动可见光模块发出可见光。
在本公开一个示例的实施例中，可以通过如下方法使得可见光信号携带数字密码信息：当可见光模块(例如手机的闪光灯或连接到手机的LED灯)发出按照一定频率闪烁的可见光信号时，可以设置例如6个周期，每一个周期的持续时间为0.5秒。当可见光信号采用零电压关闭(不亮)状态时记录为数据0，当可见光信号采用高电压点亮(亮光)状态时记录为数据1，则当输入密码为101010(或者与这种二进制数字信号对应的模拟信号)的情况下，发出的可见光信号以0.5秒每次的频率按照亮光、不亮、亮光、不亮、亮光、不亮的顺序闪烁。
在本公开另一个示例的实施例中，可以通过如下方法使得可见光信号携带数字密码信息：当可见光模块(例如手机的闪光灯或连接到手机的LED灯)发出按照一定频率闪烁的可见光信号时，可以设置例如8个周期，每一个周期的持续时间为1秒。当可见光信号采用低电压点亮状态(暗光)时记录为数据0，当可见光信号采用高电压点亮状态(亮光)时记录为数据1，则当输入密码为10110111(或者与这种二进制数字信号对应的模拟信号)的情况下，发出的可见光信号以1秒每次的频率依次按照亮光、暗光、亮光、亮光、暗光、亮光、亮光、亮光的顺序闪烁。
在本公开的又一方面，还提供一种基于可见光通信解锁的方法。该方法可以在根据本公开的感光锁中使用，诸如上面的一个或多个实施例中详细公开的感光锁。因此，对于该方法的可选实施例，可以参考感光锁的实 施例。该方法包括以下步骤，其可以以给定的顺序或以不同的顺序执行。此外，可以提供未列出的附加方法步骤。此外，可以至少部分地同时执行两个或更多个或甚至所有的方法步骤。此外，方法步骤可以重复执行两次或甚至多于两次。
在示例的实施例中，该基于可见光通信解锁的方法可以通过感光锁实现。该感光锁可以接收可见光信号，例如，通过手机上的程序控制手机的闪光灯发出与密码信息有关的可见光信号，以便基于接收到的可见光信号进行解锁操作。
图10为根据本公开的实施例的基于可见光通信解锁的方法的示例的流程图。如图10所示，该方法包括步骤S101-S104。
在步骤S101，接收可见光信号并将可见光信号转换成电信号，例如通过光电检测模块。在该步骤中，可见光信号可以是光钥匙基于用户输入的数字密码信号而发射的信号，该可见光信号可以携带数字密码信息，例如该数字密码信息可以通过可见光的闪烁频率来体现。示例地，当输入的数字密码为101010(或者与这种二进制数字信号对应的模拟信号)的情况下，可见光信号可以按照亮光、不亮、亮光、不亮、亮光、不亮的顺序闪烁。当光电检测模块接收到这样的可见光信号时，可以生成电信号，例如电压信号或电流信号。
在步骤S102，将电信号转换成数字密码信号，例如通过信号处理模块。在该步骤中，由于电信号是根据携带数字密码信号的可见光信号生成的，因此可以将该电信号还原成数字密码信号，例如101010。
在步骤S103，将数字密码信号与预置的数字密码信号相比较。在该实施例中，可以预置感光锁的解锁密码，并将该解锁密码存储在感光锁的例如存储器中。在基于可见光信号生成解锁密码信息之后，可以将生成的解锁密码信息与预先设置的解锁密码进行比较，以确定是否开锁。
在步骤S104，根据在步骤S103中的比较结果，确定是否解锁。当数字密码信号与预置的数字密码信号一致时，进行解锁操作，否则，不进行解锁操作。
在图10所示的实施例中，在接收到可见光信号之后，可以首先对可见光信号进行放大及滤波操作，以便提高信号的强度并减小噪声，从而可以 提高准确度和灵敏度。
本文中描述的单元或模块可以实现为处理器和存储器的组合，其中处理器执行存储器中存储的程序以实现相应单元或模块的功能。本文中描述的单元或模块也可以完全的硬件实施方式实现，包括专用集成电路(ASIC)、现场可编程门阵列(FPGA)等。
以上为了说明和描述的目的提供了实施例的前述描述。其并不旨在是穷举的或者限制本申请。特定实施例的各个元件或特征通常不限于特定的实施例，但是，在合适的情况下，这些元件和特征是可互换的并且可用在所选择的实施例中，即使没有具体示出或描述。同样也可以以许多方式来改变。这种改变不能被认为脱离了本申请，并且所有这些修改都包含在本申请的范围内。

Claims (19)

  1. 一种基于可见光通信的光钥匙，包括：
    控制模块，其被配置为接收并存储所输入的数字密码信号；
    处理器模块，其被配置为将所述数字密码信号转换成控制信号；
    可见光驱动模块，其被配置为按照接收到的所述控制信号来驱动可见光模块；以及
    可见光模块，其被配置为在所述可见光驱动模块的驱动下发出可见光信号。
  2. 根据权利要求1所述的光钥匙，还包括输入模块，其被配置为输入所述数字密码信号。
  3. 根据权利要求1所述的光钥匙，其中所述可见光信号具有与所述数字密码信号相关的闪烁频率。
  4. 根据权利要求1至3中任一项所述的光钥匙，其中所述光钥匙为手机，所述可见光模块为集成在所述手机上的光源。
  5. 一种基于可见光通信的感光锁，包括：
    光电检测模块，其被配置为接收可见光信号并将所述可见光信号转换成电信号；
    信号处理模块，其被配置为将所述电信号转换成数字密码信号；
    信号对比模块，其被配置为将所述数字密码信号与预置的数字密码信号相比较，以获得比较结果；以及
    感光锁控制模块，其被配置为根据所述比较结果控制所述感光锁是否开启，其中，当所述数字密码信号与所述预置的数字密码信号一致时，所述感光锁控制模块控制所述感光锁开启。
  6. 根据权利要求5所述的感光锁，其中，所述可见光信号具有与所述数字密码信号相关的闪烁频率。
  7. 根据权利要求6所述的感光锁，还包括：
    信号放大器，被配置为放大所述光电检测模块所接收到的所述可见光信号；和
    滤波器，被配置为过滤所述可见光信号以外的光噪声。
  8. 根据权利要求5至7中任一项所述的感光锁，其中，所述光电检测 模块包括感光膜。
  9. 根据权利要求8所述的感光锁，其中，所述感光膜包括具有多个光敏区和多个透光区的光栅结构，其中所述光敏区被配置为用于接收所述可见光信号。
  10. 根据权利要求9所述的感光锁，其中，所述多个光敏区和所述多个透光区交替平行布置。
  11. 根据权利要求10所述的感光锁，还包括显示屏和位于所述显示屏和所述感光膜之间的棱镜膜，所述棱镜膜包括多个棱镜，所述多个棱镜在所述感光膜上的正投影位于所述透光区。
  12. 根据权利要求9至11中任一项所述的感光锁，其中，所述光敏区包括：
    第一电极；
    位于所述第一电极上的P型吸收层；
    位于所述P型吸收层上的缓冲层；
    位于所述缓冲层上的窗口层；以及
    位于所述窗口层上的电流传输线。
  13. 一种基于可见光通信的密码解锁装置，包括根据权利要求1至4中任一项所述的光钥匙和权利要求5-12中任一项所述的感光锁。
  14. 一种基于可见光通信发送密码信号的方法，包括：
    接收并存储所输入的数字密码信号；
    将所述数字密码信号转换成控制信号；以及
    按照接收到的所述控制信号驱动可见光模块，使得所述可见光模块发出可见光信号。
  15. 根据权利要求14所述的方法，其中，接收并存储所输入的数字密码信号包括：
    接收输入的数字密码信号；
    进行端口初始化，确定是否强行中断；
    在没有强行中断的情况下，存储所述数字密码信号。
  16. 根据权利要求14或15所述的方法，其中，所述可见光信号具有与所述数字密码信号相关的闪烁频率。
  17. 一种用于基于可见光通信解锁的方法，包括：
    接收可见光信号并将所述可见光信号转换成电信号；
    将所述电信号转换成所述数字密码信号；
    将所述数字密码信号与预置的数字密码信号相比较，以获得比较结果；
    根据所述比较结果控制是否解锁，其中，当所述数字密码信号与所述预置的数字密码信号一致时，进行解锁。
  18. 根据权利要求17所述的方法，其中，接收可见光信号并将所述可见光信号转换成电信号包括：
    接收可见光信号；
    放大所接收到的可见光信号；
    过滤所述可见光信号以外的光噪声；以及
    将过滤后的所述可见光信号转换成电信号。
  19. 根据权利要求17或18所述的方法，其中，所述可见光信号具有与所述数字密码信号相关的闪烁频率。
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