RU2126993C1 - Device for putting labels - Google Patents

Abstract

FIELD: automation, in particular, equipment for labeling goods, products and their packing with secure hidden labels aimed against faking. SUBSTANCE: device has signal unit, which is located at controller's position and is equipped with receiving-transmitting antenna A, amplifier 1, oscillation detector 4, signal indicator 5, and oscillator 2. In addition device has sensitive label, which is designed as resonance circuit K, which is tuned to frequency of oscillator 2 of signal unit. Goal of invention is achieved by introduced rectangular pulse generator 3, which paraphase outputs are connected to gating input of amplifier 1 and starting input of oscillator 2, which output is connected to antenna A which is located inside electrostatic shield. EFFECT: increased stability to noise. 1 dwg

Description

 The invention relates to devices for marking goods, items and their packaging for the purpose of covert marking of goods and preventing their falsification.

 Known Japanese application N 04-257986 (M. class. G 06 K 17/00, published. 09/14/92), which describes a device for marking containing located in the controller signaling unit, including a transceiver antenna, amplifier, vibration detector , the first output of the amplifier is connected to the transceiver antenna, and the second output is connected to the input of the oscillation detector, the output of which is connected to the input of the detector, and an electrical label fixed to the marked object is made in the form of a resonant circuit tuned to the generator frequency for a period iCal oscillations sync block.

 The differences of the claimed invention from this analogue are the introduction of a rectangular pulse generator into the signaling unit, the paraphase outputs of which are connected to the gate input of the amplifier and the start input of the periodic oscillator, the output of which is connected to a transceiver antenna placed in an electrostatic screen.

 These differences provide increased noise immunity of the device.

 Depending on the size and design, the electrical label provides an alarm at a distance of 0.05 m to 0.5 m. The electrical label is glued to the product, built into its structure or made in the form of a separate branded plastic card.

 The drawing shows a block diagram of a device.

 The device for marking consists of a circuit K located in the product and an alarm unit with antennas A located at the controller.

 The resonant circuit K is a coil of wire with a capacitor, made in the form of a flat winding without a core or wound on a ferromagnetic core. The resonant circuit is fixed on the product or built into its design, depending on the form of execution.

 The antenna of the emitter A consists of a coil with a ferromagnetic core and a capacitor, an amplifier 1 with a high-impedance input, shunted from overvoltage by the on-board diodes. To protect against interference, antenna A is enclosed in an electrostatic shield.

 Antenna A is connected to a periodic oscillation generator 2 connected to a rectangular pulse generator 3. The output of amplifier 1 is connected to a series-connected detector 4 and signaling device 5. The inverse output of square-wave generator 3 is connected to the gate input of amplifier 1.

 The operation of the device is as follows. The generator of rectangular pulses 3 alternately opens the generator of periodic oscillations 2 and amplifier 1, providing alternating emission and reception of oscillations of the antenna A. The "bursts" of oscillations due to inductive coupling are induced in the resonant circuit K tuned to the frequency of the transceiver, "swinging" the circuit and accumulating in it vibrational energy. During periods of pauses between the "packs", the damped oscillations of the circuit K are reradiated, induced in the antenna A, amplified by the amplifier 1, which opens for the duration of the pauses, are rectified by the detector 4, and fed to the signaling device detecting the presence of an electrical label in the form of a constant voltage.

 To determine the accessory of products with different electrical labels, the periodic oscillator is performed with a step change in frequency and the corresponding frequency with a digital indicator of the electrical label number (not shown in the diagram).

 The preferred frequency range is 20 kHz to 1000 kHz. Resonant circuits do not require maintenance, have an almost unlimited service life and are built into various things and objects.

Claims (1)

 A device for marking objects containing a signaling unit located at the controller, including a transceiver antenna, an amplifier, an oscillation detector, a signaling device and a generator of periodic oscillations, the input of the amplifier is connected to a transceiving antenna, and the output is connected to the input of the oscillation detector, the output of which is connected to the signaling device input , and attached to the marked object electrical label, made in the form of a resonant circuit tuned to the frequency of the generator of periodic oscillations of the signaling unit tion, characterized in that the alarm unit is entered the rectangular pulse generator paraphase outputs of which are connected to the strobe input of the amplifier and the input of the trigger generator of periodic oscillations, the output of which is connected to a transceiver antenna placed in the electrostatic shield.