The embodiment of the invention discloses a fingerprint unlocking control method and a terminal device. The fingerprint unlocking control method includes the steps that an original fingerprint image is obtained, and a registration fingerprint corresponding to the original fingerprint image is determined; efficient characteristic points of the original fingerprint image are determined, whether the efficient characteristic points meet the preset condition or not is determined, and the preset condition a condition used for determining whether the original fingerprint image can be correctly identified or not; if the efficient characteristic points meet the preset condition, and it is determined that the original fingerprint image can be identified, the original fingerprint image is compared with the registration fingerprint; if the efficient characteristic points do not meet the preset condition, and it is determined that the original fingerprint image can not be identified, the original fingerprint image is subjected to characteristic amplification to obtain fingerprint simulation data, and then the fingerprint simulation data is compared with the registration fingerprint. The characteristic amplification processing process and the like can be reduced, the fingerprint unlocking time is saved accordingly, and fingerprint unlocking efficiency is improved.

Fingerprint unlocking control method and terminal device

The embodiment of the invention discloses a fingerprint unlocking method and device. The realization of the method is taken as an example, and the method comprises: obtaining an original fingerprint image, and determining the register fingerprint corresponding to the original fingerprint image; obtaining a historical success rate of fingerprint unlocking through comparison of a fingerprint image without feature amplification processing and the register fingerprint; if the historical success rate is higher than a first threshold, using the original fingerprint image to compare with the register fingerprint; and if the historical success rate is lower than a second threshold, performing feature amplification processing of the original fingerprint image to obtain fingerprint simulation data, and then using the fingerprint simulation data to compare to the register fingerprint. The historical success rate is used for determining whether the user's original fingerprint image can be identified or not so as to select more suitable fingerprint unlocking mode; and moreover, in the condition that the user fingerprint identification itself has high success rate, the processing process such as feature amplification and the like can be reduced, and the fingerprint unlocking efficiency can be improved.

Fingerprint unlocking method and device

The invention discloses a voltage-stabilized self-control field image shooting system based on an infrared sensor. The system comprises a power supply, a self-judging control circuit, the infrared sensor and a camera, a signal transmitter and a remote receiver, wherein the self-judging control circuit is connected with the power supply, the infrared sensor and the camera are respectively connected on the self-judging control circuit, the signal transmitter is arranged on the camera, and the remote receiver is connected with the signal transmitter through a wireless network; the power supply is a storage battery with a solar panel; the self-judging control circuit is composed of a single-valve amplification circuit, a secondary amplification circuit, a filter circuit, an amplification output circuit, a signal triggering circuit and a power supply control circuit, which are connected end to end; and a voltage stabilization circuit is arranged between the storage battery and the self-judging control circuit. The voltage-stabilized self-control field image shooting system based on the infrared sensor, provided by the invention, can greatly improve cruising power of the camera shooting in the field, and can avoid influence on normal activities of animals caused by frequently going in and out of human beings.

Voltage-stabilized self-control field image shooting system based on infrared sensor

The present invention discloses a hydrology and water resource data transmission system based on the Internet of Things. The system comprises a signal receiving circuit, a frequency modulation calibration circuit and a voltage stabilization output circuit. The signal receiving circuit is configured to receive signals of a signal transmission channel input end used by a control terminal in the hydrology and water resource data transmission system based on the Internet of Things, the signals are filtered through a [Pi]-type filtering circuit formed by an inductor L1, a capacitor C1 and a capacitor C2, the frequency modulation calibration circuit is divided into two paths to receive circuit output signals, the signals in one path are subjected to frequency modulation through a frequency modulation circuit formed by a triode Q1, a triode Q2, a capacitor C15 and a capacitor C16, the signals in the other path are attenuated through an attenuation circuit formed by a potentiometer RW2, a capacitor C3 and a capacitor C4, the signals are subjected to clutter filtering through an interference signal filtering circuit formed by capacitors C6-C9, a voltage-regulator tube D1 and a triode Q3, and finally, the voltage stabilization output circuit utilizes a triode voltage stabilization circuit formed by a triode Q5 and a voltage-regulator tube D4 for voltage stabilization and then output so as to achieve automatic calibration of the signals and avoid signal distortion.

Hydrology and water resource data transmission system based on Internet of Things

The invention discloses a detection amplification circuit based multifunctional novel alcohol detector. The detector is characterized by mainly comprising a central processor, a power supply, an illumination driving circuit, a memory, a display, an alarm, an alcohol detection module, a detection amplification circuit, a signal denoising circuit, a camera and an illumination lamp, wherein the power supply, the illumination driving circuit, the memory, the display, the alarm, the alcohol detection module and the detection amplification circuit are connected with the central processor respectively; the signal denoising circuit is connected with the detection amplification circuit; the camera is connected with the signal denoising circuit; the illumination lamp is connected with the illumination driving circuit; and a control end of the camera is further connected with the central processor. According to the detector, face portrait information of a detected person can be extracted, so that the convenience is brought for law enforcement work of related law enforcement departments. The detector is provided with the detection amplification circuit, and the detection amplification circuit can separate out an image signal to block an interference signal and amplify the image signal to avoid the interference of signal image display definition.

Detection amplification circuit based multifunctional novel alcohol detector

The invention discloses an intelligent high-definition multi-screen image processing system based on voltage stabilization protection. The system is composed of an image collector (1), a digital signal processor (5), an amplification unit (2) connected with the image collector (1), an image conversion unit (3) connected with the amplification unit (2), an FIFO memory (4), a memory (6), a data output unit (7) and more than two displays (8) connected with the data output unit (7). The FIFO memory (4), the memory (6) and the data output unit (7) are connected with the digital signal processor (5). The system is characterized in that a voltage stabilization protection unit (9) is arranged between the image conversion unit (3) and the FIFO memory (4). The system has a stable working voltage, therefore image signal processing is prevented from influence of voltage fluctuation and the image processing precision is raised. In addition, the system has a good linearity, and therefore an image has a high definition during display.

Intelligent high-definition multi-screen image processing system based on voltage stabilization protection

The invention discloses an anti-theft alarm system based on a photoelectric sensing technology. The anti-theft alarm system based on the photoelectric sensing technology is characterized by comprising a radiating circuit (1), a receiving circuit (2), an amplifying circuit (3) which is connected with the receiving circuit (2), a trigger circuit (4) which is connected with the amplifying circuit (3), and an alarm circuit (5) which is connected with the trigger circuit (4). According to the anti-theft alarm system based on the photoelectric sensing technology, the alarm system is controlled through the photoelectric sensing technology, and the safety performance of the alarm system is improved; meanwhile, the trigger circuit adopts an LM387 integrated circuit as a trigger chip, and the sensitivity of the alarm system can be improved.

Anti-theft alarm system based on photoelectric sensing technology

The invention discloses a pre-amplification infrared imaging image recognition system based on noise reduction. The pre-amplification infrared imaging image recognition system is composed of an infrared imaging system (1) and an image recognition system (2) connected with the infrared imaging system (1). The image recognition system (2) comprises a central processing module (21), and an image processing system (22), a display (23), an alarm (24) and a memory (25), all of which are connected with the central processing module (21). The image recognition system (2) is further provided with a noise reduction module (26), and the noise reduction module (26) is connected with the image processing system (22). Through a pre-amplification circuit, image signals can be amplified without distortion, images after amplification are clearer, and the recognition accuracy of the system is further improved. Meanwhile, the system is provided with the noise reduction module which can filter interference noise of image signals in the process of transmission and restore the image signals to an original effect.

Pre-amplification infrared imaging image recognition system based on noise reduction

The invention discloses a frequency-stabilized oscillatory type infrared positioning-based pattern recognizing and reminding system for signal lamps. The system comprises a power supply module, a reminding module, a central control module and a camera, wherein the reminding module, the central control module and the camera are connected with the power supply module. The reminding module and the camera are connected with the central control module. The central control module comprises a positioning module, a pattern recognizing module connected with the positioning module, and a speed sensing module connected with the pattern recognizing module. The system is characterized in that the positioning module is composed of a frequency-stabilized oscillation module, an infrared receiving circuit, a constant-current infrared transmitting circuit connected with the frequency-stabilized oscillation module, a single-chip microcomputer connected with the infrared receiving circuit, a distance threshold storage module and a triggering module, wherein the distance threshold storage module and the triggering module are connected with the single-chip microcomputer. The constant-current infrared transmitting circuit is controlled by the frequency-stabilized oscillation module. Therefore, infrared signals can be stably radiated by the constant-current infrared transmitting circuit, so that the stability of the system is improved.

Frequency-stabilized oscillatory type infrared positioning-based pattern recognizing and reminding system for signal lamps

The invention discloses a bias voltage type fingerprint recognition system based on logic amplifying processing. The bias voltage type fingerprint recognition system based on logic amplifying processing consists of a single-chip microcomputer (1), a fingerprint signal acquisition module (6), a pre-storing module (2), a wireless transmitting module (3), a video camera (4), an alarm device (5), a triode bias voltage processing module (8) and a power module (7), wherein the pre-storing module (2), the wireless transmitting module (3), the video camera (4), the alarm device (5) and the triode bias voltage processing module (8) are connected with the single-chip microcomputer (1); the power module (7) is connected with the triode bias voltage processing module (8). The bias voltage type fingerprint recognition system based on logic amplifying processing is characterized in that a logic amplifying processing module (9) is arranged between the fingerprint signal acquisition module (6) and the single-chip microcomputer (1). The bias voltage type fingerprint recognition system based on logic amplifying processing can conduct logic amplifying processing on collected fingerprint signals; even if the fingerprint signals collected by the fingerprint signal acquisition module are weak, the fingerprint recognition system can accurately recognize the fingerprint signals.

Zhang Xiaoyi

Papers

Intelligent high-definition multi-screen image processing system based on voltage stabilization protection

Anti-theft alarm system based on photoelectric sensing technology

Pre-amplification infrared imaging image recognition system based on noise reduction

Frequency-stabilized oscillatory type infrared positioning-based pattern recognizing and reminding system for signal lamps

Bias voltage type fingerprint recognition system based on logic amplifying processing