A fingerprint access control system has been newly installed in three female student dormitory buildings on the Huangjiahu Campus of Wuhan University of Science and Technology. Some students believe that this move is more secure, and some students worry that the use of fingerprint access control may hinder normal communication among classmates. ... The school stated that installing a fingerprint access control requires a cost of more than 20,000 yuan for a door. If the effect is good, it will be promoted throughout the school. ("Wuhan Evening News" August 30, 2010)
Compared to the Chinese who are still using door locks, fingerprint access control should be considered a high technology. In an ordinary university dormitories, it is a luxury to use such a high cost of access just for the purpose of theft prevention.
What is the university doing? Cai Yuanpei, former president of Peking University, said: It is a place where “learning from profound knowledge†is a place to cultivate high-tech talent and create high-tech wealth. University funding, whether it comes from student contributions or national funding, must ensure that the vast majority are used in teaching and research. Such as a door 20,000, ten doors to 200,000, a hundred, a thousand ... This number is big. In the current China, the university has not yet reached the point where there is money and no place to spend.
On the one hand, society generally reflects that the fees charged by universities are too high for normal families to afford. Many students have to rely on national student loans to complete their studies hard; some university professors have to suspend their efforts because of the school’s “no money†subsidy for scientific research funding. Discipline research and scientific experiment projects are rushing around to seek help. On the other hand, many universities do not take money seriously as they are concerned. They frequently spend a hundred thousand and one million dollars. They set aside a large number of fees to build a lavish school gate and engage in luxury celebrations. Installed high-tech access control, such as the pursuit of the appearance of luxury sensational image decoration. The result of this can only enlarge the university's "big" character and lose the connotation of "learning" at the university.
We cannot deny that some university campuses have experienced a discordant phenomenon of flying robberies. A few students have suffered unfair losses because of the existence of flying robbers. However, historical experience shows that locks can only lock gentlemen and cannot lock the villain. Relying on the access control to ban flying robbers is indeed a headache for doctors and doctors. If the university can develop well and enhance its spiritual content, why does it require fingerprint access control?
High Frequency Ranging Sensor Module
A high frequency ranging sensor module is a device that uses high-frequency signals to measure the distance between the sensor and an object. It typically consists of a transmitter and a receiver, which emit and receive high-frequency signals, respectively.
The module works by sending out a high-frequency signal, such as ultrasonic or radar waves, and measuring the time it takes for the signal to bounce back after hitting an object. By calculating the time of flight, the module can determine the distance between the sensor and the object.
High-frequency ranging sensor modules are commonly used in various applications, such as robotics, industrial automation, and automotive systems. They provide accurate distance measurements and can be used for obstacle detection, object tracking, or proximity sensing.
High-frequency laser distance sensors have a high measurement frequency and can provide real-time distance data, suitable for scenarios requiring quick responses, such as dynamic obstacle avoidance, autonomous driving, and robot navigation. These sensors ensure that the system can promptly perceive environmental changes and react quickly, ensuring safe and reliable operation.
High Frequency Laser Distance Sensor module,Sensor Rang Laser,Precision Laser Distance Sensor,Optical Laser Sensor,High Speed Laser Distance Sensor
CHENGDU MESKERNEL INTEGRATED TECHNOLOGY CO.,LTD , https://www.meskernel.com