Anti-theft system based on color Doppler ultrasonic scanning and infrared scanning

Abstract

The invention relates to an anti-theft system based on color Doppler ultrasonic scanning and infrared scanning. The anti-theft system comprises: a central control module; a power supply module, which is connected with the central control module; a scamming device, which is used for scanning a human body specific position as well as generating a color Doppler ultrasonic datagram and an infrared thermal scanning image; a data transmission module, which is used for transmitting information from a central processing module; and a storage module, which is used for storing the Doppler ultrasonic datagram and the infrared thermal scanning image as well as is connected with the data transmission module and is provided with an electronic lock that is opened and closed by an electric signal. A condition for giving an instruction by the central processing module to open the electronic lock is that: the color Doppler ultrasonic datagram and the infrared thermal scanning image are mutually matched, wherein the color Doppler ultrasonic datagram and the infrared thermal scanning image are from the scanning device and are preset in the storage module. According to the invention, because an identification model in the invention is based on an internal structure below epidermis of the human body, a good non-replicability performance is realized; therefore, the possibility that a lawless person forges a human body characteristic is almost nil; identification precision, security and reliability of the anti-theft system are substantially reduced.

Description

technical field [0001] The present invention relates to a defense system in the security field, and more specifically, to an anti-theft system based on color Doppler ultrasonic scanning and infrared scanning. Background technique [0002] Existing anti-theft devices are based on technologies such as fingerprint recognition, face recognition, and pupil recognition, which respectively collect fingerprints, face patterns and pupils of users through fingerprint collection modules, face recognition modules or pupil recognition modules. Due to these characteristics of users It is unique, so analyzing and comparing these features and obtaining verification results can achieve the purpose of confirming identity and granting corresponding permissions. As far as the above-mentioned fields are concerned, its products and applications are relatively mature. [0003] However, one of the common features of the anti-theft systems currently on the market is that the identification objects o...

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Problems solved by technology

[0003] However, one of the common features of the anti-theft systems currently on the market is that the identification objects of the identification system are all organs or features located on the surface of the human body. Compared with the internal structure of the human body, these identification objects are relatively easy to be forged or simulated. , which to a certain extent has created an opportunity for criminals. In practice, there are also cases where someone cracks the anti-theft system by forging the fingerprint model of the authorized user, so the current anti-theft system still has certain loopholes.

[0004] On the other hand, color Doppler ultrasound scanning and infrared scanning are two detection technologies widely used in the medical field. The principle of color Doppler ultrasound scanning is to use the Doppler effect, that is, through the sound source The change of audio frequency is generated during relative movement to observe and measure the hemodynamic changes of human tissues and organs. The radiation source will cause the radiation frequency to drift due to movement. Using this frequency change, the blood flow in the blood vessel can be accurately detected. The flow velocity and the calculation of the blood flow per unit time in the blood vessel, the color Doppler ultrasound technology can not only see the ultrasonic image of the human subcutaneous tissue, but also display the blood flow in the subcutaneous blood vessel in color, and display it through different colors. Represents the different speeds of blood flow. The existing color Doppler ultrasound instrument can detect blood flow information in blood vessels with a diameter of 0.2mm and low-speed blood flow of 0.2cm / s; infrared thermal scanning technology is widely used in military, medical and other fields. A detection technology in this field, its principle is: everything in the universe, if the temperature is higher than the absolute temperature, will continuously radiate infrared rays outward. Due to the role of human metabolism, there must be a temperature difference between blood vessels and various parts of the body surface. This temperature difference can be captured by infrared imaging equipment and accurately reflect the shape of blood vessels on the body surface; obviously, the distribution of blood vessels in different individuals must be different. There are differences, and this difference is unique. At present, no scientific research institution or manufacturer has applied the above technology to the security field

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