Color-Doppler-ultrasonic-scanning-based antitheft system

Abstract

The invention relates to a color-Doppler-ultrasonic-scanning-based antitheft system, which comprises a center control module, a power module, a Doppler ultrasonic scanning device, a data transmission module, a storage module and an electronic lock, wherein the power module, the Doppler ultrasonic scanning device, the data transmission module and the storage module are connected with the center control module; the Doppler ultrasonic scanning device is used for acquiring the blood flow state information of a specific part of a human body, and generating a color Doppler ultrasonic data graph; the data transmission module is used for transmitting information from the center control module; the storage module is used for storing a Doppler ultrasonic data graph; the electronic clock is connected with the data transmission module, and is turned on and off by an electrical signal; and the center control module instructs the turning-on and turning-off of the electronic lock under the condition that the color Doppler ultrasonic data graph generated by the color Doppler scanning device is matched with the Doppler ultrasonic data graph in the storage module. An identification model of the color-Doppler-ultrasonic-scanning-based antitheft system is based on a subepidermal internal structure of the human body, and has high non-duplicability, so that a criminal can hardly counterfeit the characteristics of the human body, and the identification accuracy, safety and reliability of the antitheft system are improved.

Description

technical field [0001] The present invention relates to a defense system in the field of security protection, more specifically, to an anti-theft system based on color Doppler ultrasonic 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 of the identi...

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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 forge or simulate. , 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 is a technology widely used in the medical field. The principle of color Doppler ultrasound scanning is to use the Doppler effect, that is, the sound frequency is generated when the sound source moves relative to the measured object. 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 flow velocity of the blood flow in the blood vessel can be accurately detected and the blood vessel can be calculated. The flow of blood flow per unit time, color Doppler ultrasound technology can not only see the ultrasound image of human subcutaneous tissue, but also display the blood flow in subcutaneous blood vessels in color, and represent the difference of blood flow through different colors. Speed, 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. At present, there are no scientific research institutions or manufacturers applying this technology to the security field

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