System properties

ACOUSTO - MAGNETIC technology :

* Acoustic waves and electromagnetism are its composite inducting conditions and acoustic waves are induction trigger signals.

* Center frequency is 58KHz and its bandwidth is between 57.8KHz and 58.2KHz.

(0.4KHz) bandwidth is a present record. The narrowest electronic anti-thief system is not likely to misreport caused by interferences easily.

* The patent LE and DR composite materials inside the tags and labels will produce acoustic signals that will be fed back to receiving antenna to identify (there are no signals similar with acoustic signals at present).

The system working process of identifying the signal from tags or labels: transmit signals and stop transmitting immediately, receiving antenna continuously receive signals. Six times sampling * signals. If each power and frequency of the signals are same then identify the signals to be tag or label signals. Outside interfering signals cannot produce completely same signals 6 times in 1 second. Repeatedly work like this. That could identify the tag or label signals exactly and reduce the error rate to 0.

* AC 100 ~ 240V 50/60Hz self drift voltage

* microcomputer ADS CPU control console

All the transmitting and receiving of signals will be identified by computer. It has very high accuracy.

* DSP total digital technology makes the equipments and the degaussing compatible.

* Effective detecting distance is 90cm ~ 350cm. There is a floor hiding system for large passageways.

* There are 7 kinds of products with different detecting distances and different colors.

* One console can connect two double working systems (four detecting antennae) or four single working systems (eight detecting antennae) at the same time.

* No false report. The misreporting rate is nearly 0. The highest checking rate of our patent products could be 99% correct.

* Soft labels could be degaussed completely. The setting and detaching of hard tags are our patents. They cannot be damaged and they won't produce fatigue damage. Their biggest enduring pull is 250 pound. Except man-made destruction they can be used for more than 15 years.

* Its cost is higher but it has better relative capability and stability.

RADIO FREQUENCY - 8.2MHz

* traditional wireless signals

* Center frequency is 8.2MHz and bandwidth is 7.4MHz~8.9MHz.

(1.5MHz) bandwidth is a present record. The widest electronic anti-thief system is likely to misreport caused by interferences easily.

* The inductor coils and capacitances are the inner materials of the tags and labels, they produce the wireless frequency signals caused by impacting and surging system transmitting signals to be fed back to the receiving antenna to identify. (Any objects that could produce 7.4MHz~8.9MHz frequency will make the system report and a round curly wire will produce a radio frequency to make system misreporting.

* The system working process of identifying the signals from tags or labels: transmitting antenna continuously transmit signals, when the tags or labels are passing the detecting areas they will be impacted by the transmitting signals, the LC product the frequency immediately to make the receiving antenna receive signals, if the signals are acceptable signals inside the bandwidth, the system will report. As long as the LC is fitting any circularity coil or wire could make the system alarm.

* They are traditional circuits. Their effective detecting distance is 90cm. They have high rate false report and misreport. Their highest detecting rate is 80%~85%.

* There are about 5~10% soft labels cannot be degaussed in the production. Degaussed labels could be used again after about 5 days. The setting and detaching of the hard tags depend on the magnetism principle. They are easy damaged and they produce fatigue damage easily. Their biggest enduring pull is 120 pound, flexible fatigue will happen after 2~3 years.

* cheap