The Importance of Subway Security Scanner

With the development of the X-ray baggage security scanner, subway has become a good way to ease traffic pressure. So the subway in various big cities emerges like bamboo shoots. The subway also becomes dense-population hub, so it seems that the security check is especially important. Generally, security inspection device is arranged at the subway entrance to ensure that no one will carry contraband which may cause safety precautions.

What kind of items belongs to prohibited goods? Generally speaking, guns, military or police tools, explosive category, knives, inflammable objects, toxic, corrosive and radioactive items belong to the prohibited items that can’t be carried into the subway.

Subway metal detectors security check inspectors’ job is to guide passengers to accept luggage check detected by security scanner. Their work is very monotonous, but rather vital, involving security events. When passengers put their bags into the security scanner, the inspector will check the color on the screen to determine whether there is any contraband through the perspective image by the X-ray machine.

The screen of the security scanner can show the perspective image of the luggage. Various items have different lines and colors. While looking at these colorful images, we probably can’t distinguish anything, but the inspectors are clear at a glance. Orange represents the organic materials including water, food, plastic, etc; books, ceramic such items are displayed for green; the metal will appear blue. Inspectors must combine color and shape to judge whether there are any contraband immediately. Encounter security screening system with liquid, it should be tested with liquid detector to make sure that the liquid is safe.

The Proper Operation of the X-ray Security Baggage Scanner

For any machines, proper operation is a key factor that decides the service period of the machines. And the proper operation of the X-ray security baggage scanner also plays an important role in making sure the normal running and long service life of the X-ray security baggage scanner. Therefore, it is necessary to follow some rules in the middle of operating the security screening system. And the proper operation of X-ray security baggage scanner is also beneficial to promoting the detecting efficiency and performance of the X-ray security baggage scanner.

The qualified detecting personnel are a necessary step for the proper operation of X-ray security baggage scanner. Before using the X-ray security baggage scanner, all detecting personnel or some related personnel must be carried out professional train so as to make sure the normal running of the metal detectors scanner. And there is some potential danger of the X-ray security baggage scanner, so improper operation of X-ray security baggage scanner leads to radiation or damage to the passengers and inspection personnel as well. Therefore, it is necessary for the scanning personnel to be trained before using the X-ray security baggage scanner.

In addition, the proper operation of X-ray security baggage scanner also includes correct operation orders. First of all, it is necessary to choose proper X-ray security baggage scanner types because different kinds of X-ray security baggage scanner have different operation ways. The important point is that when operating the hand held scanning machines, it is necessary to grasp the end of the handle of the X-ray security baggage scanner. And as for plate x ray scanner machine, it is necessary to keep the perfection of the prevention curtain of the X-ray security baggage scanner. The prevention curtain is able to prevent the radiation of the X-ray security baggage scanner from damaging human beings. And in addition, remember to check whether there is any wear-off or abrasion on the delivering belt or other components of the X-ray security baggage scanner.

Better to Know Working Principle of the Narcotics Detecting

With the changing of environment both at home and abroad and the promotion of science and technology, the x ray scanner machine in airports are changing and promoting increasingly. And due to its features and functions, the narcotics detecting devices are playing more and more important role in modern society. However, and what is the narcotic detecting working principle and how does it work to detect the suspicious matters?

The narcotics detecting devices are able to detect whether there is bomb, poison or forbidden chemical medicine inside of the baggage without opening the outer packaging. Its main function is to detect materials in airport, police station, custom, prison, government as well train station. And the detecting range of narcotics detecting devices include forbidden poison, passengers’ baggage to check whether there is explosives inside of them. And it is possible to detect scene and underground ammunition.

In addition, the narcotics detecting equipment working principle is complex as well. In the middle of baggage scanners , it is impossible to collect many material samples, and the general physical and chemical method cannot analyze and judge the samples effectively. Therefore, at present, it is only possible to use ionic migration spectrum to distinguish all kind of materials. Many chemical materials are able to send out steam and particles, which will be adhesive to the surface of the materials like clothes and baggage that connecting to them. And these materials are able to be collected by vacuum adsorption and surface wiping. In addition, it is possible to heat these chemical materials and desorb them form the particles. And the gasified materials can be ionized. And in the magnetic field, the ion will flow to the some end of the electric field and the floating speed decides the structure and magnitude of the ions. Under the condition of controlling the strength of magnetic field effectively, each ion has its special moving speed similar to fingerprint to distinguish the original matters of each ion.

After the crimes touching the poison and bomb, it is possible to soak these tiny particles of poisons and bomb on hands or skin. When the suspicious touch other materials like box and clothes, it is possible to pollute the surface of these materials through fingerprint by the tiny particles. Under normal temperature, these airport luggage scanner will volatile steam naturally. And the detecting personnel are able to connect sample on the surface of these materials and use detector to analyze. Due to the high sensitivity of the security inspection device , it is able to alarm the police if there is any potential danger.

airport baggage x ray scanner radiation scanner kernel system

In the crowd flocked to the airport space, in order to guarantee the safety of the people, so have to set up the security equipment to the every passengers. Due to the number of people belongings is various, must use a baggage radiation X-ray baggage inspection system , airport security scanners. The airport security scanner luggage radiation is essential equipment for security scanner, we learn about the information of airport security baggage radiation scanner. Through airport security check baggage radiation scanner, security personnel only in the screen you can see people in a wide range of complex and belongings. Exactly how radiation airport security baggage scanner, we together to get to know the information about the airport security check baggage radiation scanner.

airport security baggage by X-ray radiation scanner works, it is typically used in airport checked and hand baggage inspection. Quarantined items must be made via X-ray radiation, through the items were not absorbed radiation will be collected in the imaging detector (usually a photodiode array. The detector output need special signal to adjust the low level of current, and high-resolution data converter is required to achieve the necessary resolution appeared in the correct items in the scan. The signal conditioning sometimes included in the single chip data acquisition solution, as precision xray baggage scanner (ADC) with current - to - voltage (I - to - V) conversion. At other times, discrete low current/front-end amplifier noise measurements and enlarge image output current of the detector array, and then drive the independent voltage input ADC.

airport baggage x ray scanner radiation scanner kernel system includes:

DSP processor

DSP processor can be used for imaging reconstruction, using the image detector array receiving signals generated scan images of the item.

Amplifier will be used in the metal detector for sale detector array of low to intermediate frequency signal amplification and requires low current noise amplifier. These are usually required for implementation of wide dynamic range of the limiting component. Because the signal amplitude is different, usually need a trans impedance amplifier (TIA) of low noise.

Basic Principle of Portable Metal Detectors

The basic line control instruments by the oscillator, phase shift and amplitude bridge, selected frequency amplifier , baggage scanners ultra-low frequency amplification emitter fit one-shot swing, power supply.

Portable metal detector (grounds 15kHz oscillator generates a sinusoidal voltage detection coil fed detection coil by a master transmitter coil) basic principle is important. It includes two vice- ring and the input transformer, output transformer. Vice- ring located on the main transmitter groups on both sides of laps, lap distance equal to the primary transmitter and symmetrical, and cross-linked with each other to form a differential coil. When 15 kHz sine wave oscillator generates a sinusoidal alternating voltage of the transformer is fed through the input master transmitter coil, thus producing 15 kHz alternating magnetic field, and two pairs of the cutting ring in the main loop by transmitting a large alternating current.

Because of the two vice- lap main launch yet another lap distance symmetrical cross chain, while the induction of an equal magnitude but opposite direction (phase difference of 180 °) of the EMF 15kHz offset each other ( due to the relationships that we cannot process the two deputy circle the main circle done completely symmetrical, and shielding materials outside influence, there is always a mV output transformer unbalanced signal output level , and we want it as small as possible ). When no metal probe into the circle , only a faint 15kHz signal output amplitude imbalance, this signal after amplification by a DC airport luggage scanner becomes blocking capacitor being blocked, you cannot enter the post-amplifier, then the instrument still in a relatively stable state.

Once the metal into the detection coil, metal is at 15kHz alternating magnetic field, generated EMF , eddy current phenomena, so the relative balance detection coil is destroyed, and produce low-frequency pulsating electrical potential difference, this pulsating potential difference is set out in the original such as the amplitude imbalance signal input to the amplifier amplifies. When you buy metal detector, according to portable metal detector, metal signal through the first-stage amplifier, 3000 a magnitude has been amplified 4000 times, and then into the detector to remove the useful signal from the low-frequency amplifier unbalanced signal sending trade deficit, but also get more than 1000 -fold magnification. At this point the signal from the original metal microvolt signals become amplified by several orders of magnitude volts, and after reaching the trigger voltage level trigger, the trigger work led relay, an alarm signal, and control objects required for automatic control. For example, cut off the power supply load, lit lights, sound signals, etc., based on these, we can determine the presence or absence of metal.

Portable x-ray baggage , which possesses security screening system, is designed to detect people or objects carrying metal objects. It can detect the parcels, baggage, mail, etc. within the fabric brought weapons, explosives or small metal objects people carry. You should know particularly sensitive to the appearance of its surface make operation simple and easy. Superior ring sensor type hand probe.