ES2297980B1 - READING DEVICE FOR CODED WRENCHES. - Google Patents

Abstract

Key reading device coded

The present invention relates to a perfected coded key reading device, of the which combine electronic elements and constitute a system of Access control and security. Characterizes the improvement of coded key reading device the combination of electronic elements that adjusted to the appropriate frequency, allows its use on metal surfaces. Electronic elements that constitute it are a key, a power supply, a antenna, a reader, a microprocessor and an output.

Description

Key reading device coded

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Object of the invention

The present invention relates to a device for reading coded keys, of which they combine electronic elements and constitute a control system of access and security.

Characterizes the improvement of the reading device  of coded keys the combination of electronic elements that adjusted to the appropriate frequency, allows its use on surfaces metallic

The electronic elements that constitute it they are a key as the emitting element of the coded signal, a power supply, an antenna, a reader, a microprocessor and an exit.

Background of the invention

It is common practice to access places in  those whose entry is limited, the use of systems that to a greater or lesser degree they incorporate some type of access code such as keys, remote controls, cards, etc.

Patent ES 2020846 is cited as background, from the same manufacturer, in which the reading device subject to the invention is configured by the functional association of a coded magnetic key reader, a coding stage and code receivers

The reading device that advocates this invention is characterized by being able to work in metallic environments, since existing devices on the market lack this characteristic, which prevents its normal functioning in presence of metal masses.

Description of the invention

The present invention relates to a perfected coded key reading device, of among those that constitute an access control system and security, in which electronic elements are combined that adjusted to the appropriate frequency, allows its use on surfaces metallic

The reading team is made up of a composite system essentially for two stations: a reading station that sends the orders and a receiver that receives and executes them.

The reader acts as the primary of a transformer in such a way that when approaching the key, card or any other encoded element, harness the energy of the reader to feed and emit an encoded signal thanks to the code which has been recorded internally. That code generates variations of tension in the reader coil, which are analyzed and translated.

The electronic elements that constitute the key reader system are:

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Key, being understood to be also refers to any encoder emitting device, by example, a card or proximity keys.

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 Power supply, being in charge of supplying the necessary energy so that Run the electronic circuit.

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Antenna, or device Receipt of the coded signal.

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Reader, or element of processing of the received signals, which once interpreted as valid they are sent to the microprocessor.

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Microprocessor, or device translator of the signals to the system code and that performs a constant check of the frequency of the reader.

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Exit, or element of modulation and amplification of the encoded signal for identification by a receiving team.

The reading device presents the feature of being able to incorporate any material between the key and antenna, which does not necessarily have to be air, but materials such as tiles, bricks, marble, water, glass, etc.

Description of the drawings

This descriptive report is complemented with an illustrative figure of the preferred example and never limiting the invention.

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Figure 1 is a block diagram of the system that constitutes the key reading device coded

Preferred Embodiment of the Invention

The present invention relates to a perfected coded key reading device, of the which combine electronic elements and constitute a system of Access control and security.

The key reader team of the Preferred example is formed by the following elements:

A key or card (1), a source of power (2), an antenna (3), a reader (4), a microprocessor  (5) and, finally, a signal output (6).

The recommended key reading device It is characterized by the ability to work in environments metallic This characteristic is conferred by the fact that the microprocessor (5) is connected to a loop (7) with the antenna (3) constantly checking the frequency of reader work (4) of keys.

During the operation of the device reading and in the proximity of metal masses, a variation of the frequency of operation of the reader (4) by fluctuations due to the presence of metallic environments. In this preferred example the microprocessor (5) detects the variations frequency of the reader (4) through the loop (7) and by comparison with the standard or operating frequency of the device, giving order to the reader (4) to increase or decrease, as the case may be, its operating frequency and adapt it to the one of the key (1), that is to say, to the one of operation of the device or pattern.

They do not alter the essentiality of this invention variations in materials, shape, size and arrangement of component elements, described in a non-limiting manner, sufficient this one to proceed to its reproduction by an expert.

Claims (2)

1. Device for reading coded keys, among those that receive the signal emitted by a coded key (1) and which are formed by a power supply (2), an antenna (3), a reader (4), a microprocessor (5) and a signal output (6) characterized in that it establishes a continuous adjustment of the frequency of the reader (4) to a standard operating frequency of the circuit to correct fluctuations due to the presence of metallic environments. 2. Device for reading coded keys according to claim 1, characterized in that the microprocessor (5) connects with a loop (7) to the antenna (3) for detecting the frequency of operation of the reading device with the reader (4) for, in the case that the frequency is different from the pattern, its frequency varies to match the pattern.