Passive electronic lock applying difference frequency modulation communication

Abstract

The invention relates to the technical field of passive electronic locks and in particular relates to a passive electronic lock applying difference frequency modulation communication. The passive electronic lock comprises an active electronic key end and a passive electronic lock cylinder end, wherein the active electronic key end and the passive electronic lock cylinder end are subjected to datainteraction through quasi-sine data waves with difference frequency. The passive electronic lock provided by the invention has the beneficial effects that only two power supplies and data lines are needed so that only two electrode contactors are needed; a contactor design is simplified and a contactor size is reduced, so that a product is convenient to design and produce; meanwhile, the strengthof an electrode is increased and a contactor is enlarged; the reliability of the contactor is also improved and the whole contactor has no directivity; the contactor can rotate freely, so that the possibility of damaging the contactors by twisting by mistakes is avoided and the polarity of an electrode is not reversed; the round electrode has no directivity so that the round electrode is very convenient to align and insert by a user and the use experience of the user is relatively good.

Description

technical field [0001] The invention relates to the technical field of passive electronic locks, in particular to a passive electronic lock using difference frequency modulation communication. Background technique [0002] As we all know, there is a type of passive electronic lock among the current electronic locks. There is no power supply inside the lock, and it needs to be temporarily powered by an external power supply to unlock the lock. This type of lock has a very long life and is basically maintenance-free. It is especially suitable for Field equipment locks, but the unlocking process not only requires external power supply, but also requires data communication with the lock, so passive electronic locks need to use multiple electrode contacts for power feeding and data communication, typically 4 contacts : Power +, power -, data RX, data TX, although these 4 contacts reduce the technical difficulty of the product, but they bring a series of problems such as many cont...

AI Technical Summary

Problems solved by technology

[0002] As we all know, there is a type of passive electronic lock among the current electronic locks. There is no power supply inside the lock, and it needs to be temporarily powered by an external power supply to unlock the lock. This type of lock has a very long life and is basically maintenance-free. It is especially suitable for Field equipment locks, but the unlocking process not only requires external power supply, but also requires data communication with the lock, so passive electronic locks need to use multiple electrode contacts for power feeding and data communication, typically 4 contacts : Power +, power -, data RX, data TX, although these 4 contacts reduce the technical difficulty of the product, but they bring a series of problems such as many contacts, unreliability, and precise positioning of the contacts. It brings a lot of inconvenience to production and use, especially causing users to use electrode plugs that are directional, which makes it difficult to align and insert when used in a location with poor sightlines, which affects the experience

[0003] To sum up, the current products on the market have the following problems: 1. The above-mentioned similar products have a large number of electrodes, and the electrodes are the most likely source of failure. Poor contacts, skewed electrodes, etc. are common faults. It can be said that The more contacts, the higher the failure rate, almost linear relationship

[0004] 2. Because there are many electrode contacts, it is very difficult to produce and manufacture, because the electrodes need precise positioning, and the size of the connector is large, which affects the appearance

[0005] 3. Because there are many electrode contacts, in order to reduce the appearance size of the contacts, the size of the electrodes must be reduced to make the electrodes relatively slender, which significantly reduces the strength of the electrodes and the contact area of ​​the contacts, which is easy to damage Electrodes, the second is easy to cause poor contact and high failure rate

[0006] 4. Because the electrodes are directional, the entire contact is also directional, so it is very difficult for users to insert and align, especially when the ambient light is weak, and the user experience is very bad.

[0007] 5. It is easy to be damaged by wrong twisting, because the electrode has directionality, so it cannot be twisted at will. If the user accidentally twists the electronic key, it may cause excessive force and damage the electrode

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