TWM518379U - Access control device with reflected spectrum identification function - Google Patents

Description

Access control device with reflected light spectrum identification function

This creation belongs to the field of access control device control, especially in the case of reading the radio frequency verification code, and comparing the spectrum of the anti-counterfeit ink reflected light of the radio frequency access card surface to improve the performance of preventing the copying access card from entering the zone. Access control device for optical spectrum identification.

MIFARE (Non-Contact IC Card) is one of the widely used short-range, non-contact wireless RF smart card technologies. Its application fields include mass transportation, corporate/institutional identity and authority identification, access control, parking lot management and small amount. Trading, etc. However, in recent years, news that MIFARE technology has been cracked has been reported, and many units using MIFARE technology have used various methods to prevent possible losses. A more common method of remediation is to identify whether the card is the version issued by the unit through the background check mechanism, compare the serial number of the card with the transaction number, find the copied card, and upgrade to a more secure version of MIFARE. However, this approach usually encounters the following problems:

1. If the new MIFARE technology or more complex encryption and decryption algorithms are adopted, the cards, reading devices and software structures must be revised to play their functions and maintain the original fast customs clearance performance.

2. The comparison card serial number and transaction serial number operate in the background management software, and do not need to be changed to the existing hardware, but this is an after-the-fact prevention and cannot achieve immediate effect.

3. In the past, it was difficult to use the optical method to identify the authenticity of an item, and it was difficult to apply it to the access control.

4. Although it is proposed to distinguish the copied card by means of optical identification, the principle is to use the photoelectric conversion method to provide the CPU power on the card, and the CPU removes the data and transmits it to the reading device in the form of modulated light. However, such an approach would complicate the construction of the access card.

It can be seen that there are still many shortcomings in the above-mentioned methods of use, which is not a good design, but needs to be improved.

In view of the shortcomings derived from the above-mentioned conventional methods, the creators of this case have improved and innovated, and after years of painstaking research, they finally succeeded in research and development of the access control device with the reflected spectrum spectrum recognition function.

The purpose of this creation is to provide an access control device with a reflective optical spectrum identification function, which integrates the optical spectrum analysis technology into a conventional radio frequency reading device by using a general data transmission interface, and collects a special anti-counterfeiting ink on the surface of the radio frequency access card through the light source. The spectrum of reflected light after illumination is compared and compared to enhance the effectiveness of preventing the possession of forged or duplicated radio frequency access cards through the access control device.

The second purpose of the present invention is to provide an access control device with a spectrum of reflected light spectrum. By increasing the function of collecting reflected light and comparing, the soft and hard structure of the original RF access device can be avoided, and the resolution is improved. The ability to copy or falsify a radio frequency access card.

The access control device for collecting the reflected light spectrum can achieve the above-mentioned creation purpose, and refers to a spectrometer that integrates a built-in specific wavelength light source by using a data transmission interface on the access control device, and uses the light source to illuminate the anti-counterfeiting ink printed on the wireless radio frequency access card and collect the The reflected light spectrum of the anti-counterfeiting ink molecules is compared with the data of the optical spectrum library to assist the access control device to prevent the person holding the fake card from passing the inspection. The main reason is: (1) a radio frequency reading device that integrates a spectrometer with a data transmission interface, (2) a spectrometer with a built-in special wavelength source and a reflected light spectrum collecting probe, and (3) a built-in reflective optical spectrum library. The access control device and (4) the radio frequency access card printed on the surface using anti-counterfeiting ink. The radio frequency reading device controls the light source of the spectrometer to illuminate the anti-counterfeiting ink on the radio frequency access control card through the data transmission interface, analyzes the reflected light obtained by the reflected light collection probe through the spectrometer, and then analyzes the frequency distribution data through the data transmission interface. The wireless radio frequency reading device is finally transmitted to the access control device and the optical spectrum library data through the network for comparison.

When the radio frequency access card touches the radio frequency reading device, the radio frequency reading device simultaneously activates the specific wavelength light source to illuminate the surface anti-counterfeiting ink of the radio frequency access card, and the reflected light spectrum collecting probe transmits the received reflected light to the wireless device. The spectrometer in the RF reading device analyzes the spectral components of the reflected light. When the anti-counterfeiting ink on the wireless RF access card is irradiated with light of a specific wavelength, the anti-counterfeiting ink molecules are excited to a high energy level after absorbing the light energy, and after the internal relaxation process, the remaining energy is released by light and returned to the ground state. The molecular vibration and rotational energy levels of the anti-counterfeiting ink component produce a unique frequency distribution. These frequencies, together with the power and the like, are resolved by the spectrometer, transmitted to the radio frequency reading device via the data transmission interface, and transmitted to the access control device through the network. By comparing with the reflection library, it is possible to determine whether the wireless RF access card can pass the access control check.

The interpretation results can be divided into: (1) correct; (2) error; (3) three cases that cannot be interpreted, except for the first case, the other two may be the data copied to the short-range wireless block when the card is copied. The anti-counterfeiting ink part is missing during copying because it cannot be visible to the naked eye, so the spectrometer cannot read the identification data; or it is copied together with the anti-counterfeiting ink part, but because the material is different, the reflected light spectrum cannot match the database, so The access control device can improve the security of the access control according to such a judgment manner.

11‧‧‧Wireless RF Access Card

12‧‧‧Access control device

13‧‧‧ Spectrometer

14‧‧‧Light source emission and reflected light spectrum collection probe

15‧‧‧Wireless radio frequency reading device

151‧‧‧Access Control Interface

16‧‧‧Data transmission interface

17‧‧‧Network interface

FIG. 1 is a device architecture diagram of an access control device having a reflected light spectrum identification function; and FIG. 2 is a schematic diagram of optical spectrum comparison and access control of an access control device having a reflected light spectrum identification function.

Please refer to FIG. 1 , which is a device architecture diagram of an access control device with a reflective optical spectrum identification function. The architecture includes: a radio frequency access card 11 printed with an optical anti-counterfeiting ink, and an access control device 12 with a built-in reflected optical spectrum database. a spectrometer with a built-in light source and a general data transmission interface, a light source emitting and reflecting light spectrum collecting probe 14 composed of a plurality of optical fibers, a radio frequency reading device 15, an access control interface 151, a radio frequency reading device 15 and a spectrometer The data transmission interface 16 of the 13 and the network interface 17 connecting the radio frequency reading device 15 and the access control device 12, wherein the data transmission interface 16 is an IO pin or USB of UART, I ² C, TTL or CMOS level.

Please refer to FIG. 2, which is a schematic diagram of the use of the access control device with the reflected light spectrum identification function. As can be seen from the figure, when the radio frequency access card 11 touches the radio frequency reading device 15, the radio frequency reading device 15 not only senses the radio frequency access card 11 to transmit the modulation signal of the internal identification code, but also reads the radio frequency. The device 15 also activates the internal light source of the spectrometer 13 to illuminate the radio frequency access card 11 through the data transmission interface 16 of the spectrometer 13. The light source emits and reflects the light. The spectrum collecting probe 14 collects the reflected light and transmits it to the spectrometer 13 to resolve the frequency. . The analysis result is transmitted to the radio frequency reading device 15 through the data transmission interface 16, and then transmitted to the access device 12 and the internal via the network interface 17. The data of the reflected light spectrum database is compared. Only when the identification code and the reflected light spectrum of the radio frequency access card 11 coincide with the data stored by the access control device 12, the access control device 12 turns on the access control interface 151 on the radio frequency reading device 15.

Take community access control as an example. If a resident copies a wireless RF access card to a familiar person, when these people use the copied wireless RF access card to pass the gate access check, even the wireless RF access card internal authentication code and access control settings The value is consistent, as long as the ink component of the wireless RF access card is different from the security ink of the normally issued wireless RF access card, the access control device with the reflected spectrum spectrum identification function can detect the difference and can prevent such people from entering. Community to protect the safety of people's property in the community.

The access control device with the reflected light spectrum identification function proposed by the present invention has the following advantages when compared with other conventional technologies:

1. Today's spectrometer resolution is getting higher and higher, and the volume is getting smaller and smaller, and the general data transmission interface is provided to interface with other devices such as access control reading devices. This is the feature of the access control device.

2. Items generally printed with fluorescent inks are observed by the human eye when judging authenticity. The method of comparing the spectrum of reflected light can achieve automation requirements, and is more suitable for anti-counterfeiting scenes of access control cards.

3. The surface of the access control card is printed with anti-counterfeit ink, which can keep the original wireless sensor device of the original access control card. It does not need to add battery and CPU protection data.

4. The original access control device does not need to make any changes, as long as it is connected and compared with the reflected light spectrum database.

5. If the access card is a forged or imitation product, the card holder can be immediately detected and prevented from passing through the access control, instead of being found in the next transaction.

The detailed description above is intended to be illustrative of a possible embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent implementations or modifications that are not departing from the spirit of the present invention should be included in The patent scope of this case.

In summary, this creation is not only innovative in terms of technical thinking, but also can enhance the above-mentioned multiple functions compared with the use of customary articles. It should be submitted in accordance with the law in accordance with the statutory new patent requirements that fully meet the novelty and progressiveness. This new type of patent application, to encourage creation, to the sense of virtue.

11‧‧‧Wireless RF Access Card

12‧‧‧Access control device

13‧‧‧ Spectrometer

14‧‧‧Light source emission and reflected light spectrum collection probe

15‧‧‧Wireless radio frequency reading device

151‧‧‧Access Control Interface

16‧‧‧Data transmission interface

17‧‧‧Network interface

Claims (2)

An access control device with a reflected frequency spectrum frequency identification function, comprising: a spectrometer; at least one radio frequency access card, the radio frequency access card has an identification code built therein, and the radio frequency access card surface is coated with anti-counterfeiting ink; And a reflected light collecting probe, the light source emitting and reflecting light collecting probe is disposed on the spectrometer, the light source emitting and reflecting light collecting probe mainly comprises one or more optical fibers for emitting an illumination light source to enable the wireless radio frequency access control card The surface anti-counterfeiting ink generates reflected light, and simultaneously transmits the reflected light to the spectrometer for optical spectrum analysis to obtain a reflected light spectrum of the wireless radio frequency access card surface anti-counterfeiting ink; a wireless radio frequency reading device, the radio frequency reading device The system is configured to transmit a wireless radio frequency to the radio frequency access card to generate electric energy, and obtain an identification code built in the radio frequency access card, and the radio frequency reading device passes an access control after receiving an access control device to open the access control command. The control interface controls the opening of the door; the access control device has the built-in wireless radio access card The reflected light spectrum data of the anti-counterfeiting ink, and the access control device is responsible for comparing the identification code of the wireless radio access card and the reflected light spectrum of the surface anti-counterfeiting ink of the radio frequency access card to distinguish whether it is a legally issued radio frequency access card . The access control device with the reflected light spectrum identification function according to claim 1, wherein the illumination source emitted by the spectrometer is ultraviolet light, visible light or infrared light.