Recently, researchers at two campuses of the University of California have invented ultrasonic fingerprint sensors based on MEMS and CMOS technology, which can be applied to the safety aspects of smart phones and become the new choice of security system settings in the handset manufacturing industry.
In today's high-tech fields, fingerprint sensors are more and more widely used in smart phones and other equipment. The use of fingerprints to unlock and pay for features such as security than the traditional password has been greatly improved. However, the current fingerprint recognition is a two-dimensional image extracted by a sensor and fingerprint authentication can be bypassed by printing a fingerprint pattern. Now researchers at UC Davis and the University of California, Berkeley, have developed a three-dimensional image of a fingerprint based on MEMS and CMOS ultrasonic fingerprint sensors that will greatly enhance the security of fingerprinting.
MEMS refers to the mechanical system, micro-system, micro-mechanical, etc., is based on the development of microelectronics technology, a combination of lithography, corrosion, thin film, LIGA, micro-machining, micro-machining and non-silicon precision machining technology High-tech electronic mechanical devices, set micro-sensors, micro-actuators, micro-mechanical structures, micro-power micro-energy, signal processing and control circuits, high-performance integrated electronic devices, interfaces, communications is one of the micro-devices or systems. MEMS is a revolutionary new technology widely used in high-tech industries. It is a key technology that affects the development of the country's science and technology, economic prosperity and national security. The CMOS is a complementary metal oxide semiconductor is a voltage-controlled amplifier, it is composed of CMOS digital integrated circuit basic unit. The invention of this technology will bring new solutions to the smart phone security field.
During crane or trolley running, the brakes or limit switches may suddenly break down. Due to inertia, the vehicle will continue in the state of motion until running into the end stop preset at both ends of its runway track. The aim of adding a crane buffer to the contact area between the end stop and trolley or crane is to absorb the majority of energy produced in an impact shock. Following is a list of two buffer forms most commonly in use today.
Crane Buffer,Crane Buffer Device,Polyurethane Crane Buffer
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