DE2013785A1 - Arrangement for triggering a lock that only occurs when certain conditions are met - Google Patents

Description

Regarding the arrangement for triggering a lock only if they match certain prerequisites are met.

An arrangement of more than one known from digital electronics Composed logical block chain (NAND and NOR GATTER) used for encryption is used to trigger a lock.

The simplest type of encryption is given when a number of signals reach a triggering device in the intended sequence. The encryption can either be temporally or spatially differentiated the switching requirements take place, (Fig.1) For example when inserting a key. Only then will the rays emanating from one or more light sources hit on the Xichtempfänger, if the prerequisite is met that the places, light source The breakthrough or mirror receivers are aligned (Fig. A). But you can also do that from the light sources originating rays on Umleitung with aen receivers be brought into alignment (Fig. b).

It is not necessary that the same spatial arrangement must be adhered to, rather one further encryption can be achieved by regrouping to be built in.

If the openings are arranged one behind the other (Fig. E), the Receiver hit by the light beam in a specific order. Of the The first light pulse is fed to the 1st flip-flop (FF) via the NAND GATE and switches this around. The next impulse arrives via the second gate the following FF, which actuates the solenoid and releases the lock. For each A gate and an FF are provided for light pulse. A make contact that is expedient when pulling out the key or making a contact, the lifting magnet actuating FF switches, thus locking the door. To prevent unauthorized triggering of the To make the locking device more difficult, filters can be placed between the light source and receiver can be provided with a certain light transmission. So the in Fig.1, Fig. B) light diversion line shown let through a certain light spectrum. voices which match the spectral numbers of the light values, the receiver will respond. The system does not consume any electricity in the pre-locked state, this is, for example only created when the key is inserted. A base or indentation (Fig. 5 p) is used to trigger this readiness and opening. Through profiling of the key (Fig.5) becomes a further requirement of the coding given. A slipcase (Fig. 5 r) protects the actual mask from dirt or damage.

The power consumption of the system depends on the number of light sources and used lifting magnets. It is easily possible to use several lifting magnets Arrange locking of a door, which are connected in parallel or in series can.

A relay can also be used instead of the lifting magnet, which controls a number of locking devices. A thyristor that the FF controls has the advantage of the lowest power dissipation.

The slot provided for introducing the mask (Fig. 4 m) can either on the pivoting part or in the door frame (Fig. 2). That's the way it is Nor does it exclude the electronic arrangement as it is the subject of the Invention is to be accommodated at a location remote from the door. Is fed the system, which only needs to be supplied with power when it is opened, from the mains or from an accumulator that does not require any special maintenance and is automatically recharged can be. In order to prevent by predicting the power supply the door cannot be opened or can be done with great losses, it must be done from the outside Introduce the necessary operating voltage in a non-conspicuous place, whereby the built-in source is switched off (Fig. 2 d).

The power supply unit (Fig. 2 f) with the cable (Fig. 2 g) can also be used in the device containing the electronics. This device is connected to a externally accessible place and only the cover slot is noticeable visible.

A handle or one of the usual handles can be used for easier opening be used. In the latter case, it becomes difficult to see for an uninitiated person be that it can only be opened for in a special way.

The key containing the mask is inserted into the slot; if the light sources (Fig. 3) align with the openings h and k, the ones behind them are retained Receiving light. It can be photocells, photoresistors or semiconductor photocells shimmy. Through the hole in the hand of the key, which is made of metal or plastic a key ring can be inserted. If the key is executed in such a way that there are no sharp edges, which is easily feasible Bags and cases spared.

A special advantage that should be described is that a large number combinations of the light point arrangement is possible. It prevents an unauthorized Opening of a door of e.g. closings, rooms, safes, safes etc ..

Claims (5)

Claims. 1.) Arrangement of several requirements, their coincidence in one pre-selected sequence or room part and in connection with logical links unblocks a lock. There is a mask, as described, with a number of Breakthroughs - the first requirement that must be met - to receive light rays at the receiver to bring this information over a logical link that decides whether all conditions are met and the lock can be released. One or more lifting magnets lock a door or a lock freely, these being directly or via a relay or via a tyristor, triac or equivalent semiconductors takes place. 2.) Arrangement according to claim 1, characterized in that in place a mask a round or polygonal shaped piece is used, which is offset by arranged mirrors the light in a certain order, e.g. when turning to the recipients in a precisely fitting warehouse. 3. Arrangement according to claim 1 and 2, characterized in that in a flat molding depressions are pressed in or milled out, which are capable are to reflect the light rays incident at an angle on the receiver. 4.) Arrangement according to claim 1.), but characterized in that the light sources are housed on the shaped piece to be inserted like a key their operating current through suitable contacts or through a battery carried along obtain. 5.) Arrangement according to claim 1), 2), 3) or 4) characterized in that that several or mixed encryptions used in conjunction can be applied with an extension of the logic. L e r s e i t e