Comfortable 100-web intelligence digital locks are the latest products of modern technology, and they are present on many doors. They are not only intelligent, but also very secure and very powerful. But now that many consumers not only don't know how to choose to buy these digital locks, they also have little knowledge of the digital locks, and the following novels are here to give you little knowledge of the digital locks。
Rationale and hardware composition
The system of smart password locks consists of smart monitors and electronic lockers. The two are placed separately and smart monitors provide the power required for electronic locks and receive alert and status information they send. The introduction of re-routing technology has resulted in the sharing of a two-chip cable for power supply and information transmission, thus improving the reliability and security of the system。
The rationale and composition of the smart digital lock
A matrix of intelligent digital locks consisting of single-piece machines, clocks, keyboards, lcd monitors, storage receptacles, modems, circuital reuse and monitoring, a/d conversions, beepers, etc. Functions such as communications with electronic lockers, intelligent analysis and security monitoring of communication lines were largely completed。
At the end of the transmission, the electronic locks are sent out through the pulse transformer t when the modulated data signals are pressured; at the receiving end, pulse transformer t will receive data signal relief and send the modem to reduce the loss of the carrier signal during transmission. In order to reduce the interaction between communications and power supply, the choice of constrictor l and condensed cap c is considered together. Set a payload frequency fo = 400 khz, to ensure that most of the signal energy is transmitted to the receiving end, take l = 33. 7 mh? C1 = 0. 047 mf。
Electricity current surveillance technology
In order to prevent the man-made destruction of communication lines and the excessive burning of currents in the electromagnetic wires due to some reason, this paper uses current surveillance techniques in the design of smart password locks. The current monitor uses the current/voltage conversion chip max471 produced by maxim. The chip is capable of converting the measure current i into the output voltage u to the ground and has the characteristics of a large measure, a high accuracy, an output voltage u and a positive ratio of the measure current i. The current monitor output voltage is delivered to the a/d converter, and the single machine, by reading the a/d conversion results, is informed of current changes in the circuit, and analyses are used to detect anomalies in a timely manner and send warning signals。
As a result of the above-mentioned presentation, there must be some awareness of the intellectual digital lock, which uses a variety of technologies and techniques, greatly increasing security and preventing theft. And most of the smart digital locks don't need keys, they can be unlocked by fingerprint recognition or by brushing your face, and they're very convenient and practical。
