| Mechanical locks have been used for hundreds of years, they has a long history. people have to use locks all the time in life, but with the development of times, mechanical locks has gradually shown its shortcomings: one key with one lock, the key is extremely difficult to carry numerously; poor safety performance of the lock, mechanical locks has less coding, from the outside, mechanical cylinder is touchable, just use simple tools, the vast majority of mechanical locks may be opened in a short time, there is a big security risk in practical use.Electronic encoding lock has a huge amount of encryption algorithm that can be used to increase the security of data. By using RFID technology, there is no exposure from the lock's mechanical structure; this greatly increased the safety of the lock. At the same time, via a password downloading doctrine, electronic locks can increase the number of password, so within a certain range one-key-pass-all can be achieved, reducing the number of keys for carrying, which produces a great convenience for users. Electronic lock's data are encrypted during transferring, the spoilers can not open the lock within a very short period of time. With the continuous improvement of living conditions, people began to raise increasingly high security requirements. If you want to have a safe living environment, first of all, we need to have a safe anti-theft system; the most basic part of anti-theft security system is to have high-performance locks, so we have to study the new high-tech lock actively.In 1994, RFID card (Radio Frequency ID Card) entered China, triggering the application of China's RFID card revolution in the country; it was applied in more and more areas, involving all walks of life. More and more users started to accept and use IC smart cards. IC smart cards replace the old card in order to serve the public as they become more mature, and "Universal Card", a multi-purpose card to our quality life is a big improvement. IC smart card has become increasingly prevalent in our lives; credit cards have become an indispensable part of daily life. Frequency electronic locks are to use smart card technology to overcome the shortcomings of mechanical locks to secure high-performance, simple, and multi-purpose, they greatly facilitate the users. Not only in the access control system, RFID technology has been fully utilized, with the financial industry development, the continuous development of ever-changing socio-economic, especially the public transport industry, wireless communications, identification, telephone communications, etc., are involved in in-depth study of RFID technology. "Universal Card" idea led to the rapid development of electronics industry, and achieved far-reaching significance.Compared with the traditional key, this new key has special features: non-contact, fast-reading speed, no abrasion, no environmental impact, and long life, easy to use. Frequency card is based on principles of radio-frequency electromagnetic induction generation, it simply read and writes operations on the card reader within a certain distance from a short distance, it is able to achieve data exchange, without any contact, it is very convenient, fast and uneasy to damage. We have designed new electronic lock to make people's living environment more secured, more convenient.In this design, the electronic locks can be granted to numerous keys, and one key can be applied to many locks too. The locks are using radio frequency technology; wireless radio frequency helps to achieve non-contact two-way data transmission, in order to achieve target identification and data exchange purposes. The non-contact radio frequency technology was used to make the safety lock greatly improved and difficult to damage. The locks are using front-end RF module with zlg500 main circuit by P89LPC932A1 MCU control, light-emitting diodes and the ringing circuit composed of sound and light tips. Lock key is using the principle of non-contact type frequency card, and no mechanical friction with the lock body, which can significantly extend the life of a key. A new lock and key advantaged in the wireless transmission of data with encryption algorithms and data validation algorithms, as compared with the traditional mechanical lock, this electronic lock gives higher security and can not be easily vandalized.At the same time, this lock follows the protocols of ISO14443 TYPE A with the operation frequency 13.56MHZ. Digital Electronic wireless encoded lock utilized main transmission via a password that has more than 64 bits, the lock body can accommodate up to 256 keys, key owns up to 16 passwords, wireless transmission of data with encryption algorithms and data validation algorithms. The design concept in the lock has some innovations than before, and reached a certain value. Key (RF card) and the lock body (reader) applied ISO14443TYPEA communication protocol with the working frequency 13.56MHZ.Also, the design concept of the lock that this article describes can also be applied to other areas, which provided good prospects for development.
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