Walk through metal detector widely used

All public utilization of the airport to use a the terminal, where everyone must walk through metal detector, all the things items require to be checked by X-ray machine.
A good number of airport metal detectors are dependent on pulse induction (PI) principles. Some pulse induction system the particular bow tilting at the side of the coil as transmitter and receiver. The technology could very well be sent through your coil current is strong and short pulses. Each pulse generates short magnetic field. Generally if the pulse ends, the magnetic field polarity reversal in addition to the rapid decay in the magnetic field, causing a sharp electrical spike. The spike can last several microseconds (millionths to a second), cuases another contained in the conduction current with the coil. The subsequent current is addressed as the reflected pulse, it only lasts about 30 microseconds. Then send another pulse, all this process is repeated. Typical, using pulse induction metal detector sends about 100 pulses per second, but different manufacturers and different types of products function pulses per second, you will find varies greatly, starting about 25 pulses per second to above 1,000 between pulses.
If you have had metal objects underground metal detector , the pulse will likely be generated within a object a reverse magnetic field. In case the pulse magnetic field decay and make the reflected pulse, the metal objects on the reflected pulse magnetic field will extend plenty of time vital to completely disappear. Practise works something similar to echoes: If you're just a couple of inside of a room with hard surface cries, you might only hear an exceptionally brief echo, or completely not hear the echo. But once one has a lots of hard surfaces space shouting, echo duration will be longer. At the pulse induction metal detector, metal objects of your target they produce the magnetic field will "echo" superimposed about the reflected pulse, that causes the reflected pulse duration as compared to no metal objects longer.
Metal detector at the sampling circuit for monitoring the reflected pulse duration. By its comparison from the expected duration, the circuit can check if the reflected pulse decay time extended by another magnetic field. If for example the reflected pulse decay time, decay time over an obvious lots of microseconds can be that metal objects conflict with the decay process.
Sampling circuit to evaluate an inadequate signal is shipped towards a device named the integrator. Integrator reads the signals out of your sampling circuit, it is zoom in and transformed into DC. DC voltage is powering an audio circuit, too as in this circuit is changed to sound making use of sound of metal detectors indicate the fact that target object. If you realize whatever target items, screeners who can require passengers to eliminate all metal objects moreover with the detector. If ever the metal detector to point the metal, so screeners will make use of a sensor technology using same hand-held pulse detector to discover the specific reasons.
The marketplace for many new police equipment is multi-region. Therefore they have perhaps multiple transmit and receive coils, each coil arrived at different heights. It is essentially like a lone device containing multiple metal detectors. 
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Walk through metal detector in the main application areas

All public access manchester airport to experience the terminal, where everyone mustunderground metal detector , many items are required to be checked by X-ray machine.
  Most of airport metal detectors derive from pulse induction (PI) principles. The normal pulse induction system utilizes a bow tilting at the side of the coil as transmitter and receiver. The technology might be sent by way of the coil current is strong and short pulses. Each pulse generates a magnetic field. If the pulse ends, the magnetic field polarity reversal therefore the rapid decay inside the magnetic field, becoming a sharp electrical spike. The spike last several microseconds (millionths connected with a second), then leads to another in the conduction current from the coil. The following current is considered the reflected pulse, it only lasts about 30 microseconds. Then send another pulse, and this also process is repeated. Typical, in keeping with pulse induction metal detector sends about 100 pulses per second, but different manufacturers and different styles of products the number of pulses per second, there does exist unique, such as about 25 pulses per second to approximately 1,000 between pulses.
  Should you have metal objects walk-through metal detector, the heartbeat would be generated inside of the object a reverse magnetic field. Generally if the pulse magnetic field decay and make the reflected pulse, the metal objects from the reflected pulse magnetic field will extend any kind of time needs to completely disappear. Practise works business transactions on echoes: For those who are several inside the room with hard surface cries, you could only hear a really brief echo, or completely not hear the echo. It's just that since one has a quite a few hard surfaces within the shouting, echo duration could well be longer. Inside pulse induction metal detector, metal objects for the target they produce the magnetic field will "echo" superimposed on the reflected pulse, that produces the reflected pulse duration versus no metal objects a little longer.
  Metal detector on a sampling circuit for monitoring the reflected pulse duration hand held metal detector . By its comparison from the expected duration, the circuit can decide if the reflected pulse decay time extended by another magnetic field. In cases where the reflected pulse decay time, decay time more than the most common handful of microseconds is feasible that this metal objects obstruct the decay process.
  Sampling circuit to monitor an inadequate signal is sent with a device known as the integrator. Integrator reads the signals of your sampling circuit, it really is focus and changed to DC. DC voltage is linked to a sound circuit, plus in this circuit is reconstructed as sound using sound of metal detectors indicate that these target object. Should there be the target items, screeners which will require passengers to eliminate all metal objects and then again through the entire detector. In case the metal detector to point the existence of metal, so screeners make use of a sensor technology according to the same hand-held pulse detector obtain the specific reasons.
  Real estate of countless new walk through metal detector is multi-region. Which means that they also have multiple transmit and receive coils, each coil reach different heights. However this is essentially like a single one device containing multiple metal detectors.
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The strengths and weaknesses of the city through the metal detector

The use of metal detectors to find someone, hand held metal detector or metal objects in the package. Coil metal detectors to create a small magnetic
field is echoed metal objects. When the metal coil echoed a computer or microprocessor alerts security personnel, metal or
package. The most common metal detectors to walk through, this is the type often at airports or government buildings.
Contrast the public's privacy concerns
Anywhere for all the metal detectors, a major concern for privacy. The system is effective, safe or government guards to
check to see their people passed through the detector, if they have any dangerous or prohibited objects. In the tradition of
civil liberties and privacy, many people become uncomfortable to increase the metal detector. However, supporters walk by
arguing detectors, metal detectors to prevent weapons and weapons found, people attempt to increase public security.
False positives
In the era of modern medicine, factory metal detector there may be legitimate medical reasons, a person on his body metal. If the person suffered
physical injury, through surgery, his body metal equipment, metal detectors may be extinguished, increase the consideration.
However, the monitoring of the security personnel, metal metal detector senses the object to create the image of computer,
security personnel can see, metal objects may be a harmless tool, not a weapon.
Interference with fear
Can electromagnetic fields generated by a relatively small metal detector. However, the size of walk-through metal detectors
will usually produce a large number of electromagnetic fields. This may lead to any nearby electronic equipment, including
medical equipment, electrical interference. The most important thing is that electromagnetic fields may be strong enough to
damage the pacemaker.
To curb violence
The main purpose of metal detectors to stop the violence. Some people worry that the use of metal detectors in school, while
others support their ability to eliminate the weapons detectors of public places. However, studies have shown that, even in
schools to reduce or walk-through metal detectors, specifically from the violence of public buildings, there may be any
number with any particular research methods. In addition walk through metal detector , the further application of metal detectors in public places, the
most likely to increase the public dialogue on privacy.
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Portable Explosive Detector

·The new Portable Explosive Detectors of our company
Portable explosive detectors
Product description:
Origin: China
Type: SOSENSE AY05-02
Ⅰ, product introduction
SOSENSE AY05-02 portable explosive detectors are a new generation of the pseudo random sequence ion to open the door of the technology and Hadamard algorithm explosives detection instrumentation. Because for the first time with this technique, it and contrast to domestic and international have similar than instrument, can greatly improve the detection signal to noise ratio and the anti-interference ability, effectively reduce the false positives of the detector. This detector operation of humanity, and equipped with a special sampling pen to effectively prevent the operating personnel to pollution the test, Chinese menu, colorful display, batteries remove convenient and rapid charging, Port and USB interface are satisfy the sample to add and the needs of the instrument networking, can store 2000 log records article. Can be used in airports, ports, station, frontier inspection station, large activities, and other important place.
Displays with the Chinese menu, the detection is speed and have many kinds. Can detect the black powder, firecrackers medicine,self-control explosives, which other foreign product can't test of , and can according
to need to add more testing varieties of samples. Designed for the International market environment , suitable for domestic and overseas public security organs, procuratorial organs and each department.
Ⅱ, Technical Characteristics Of SOSENSE AY-0502
1 Based on the IMS technology and pseudo random sequence ion open the door technology, has high sensitivity
2 analysis fast, within10 seconds reach a conclusions
3 have breathe and test paper two methods to sampling
4 circulation suction device, high efficiency of sampling
5 the sample library and application all can upgrade
6 have voice and visual alarm function
7 through the network and USB ports, to use the supporting software can do data backup, updated
8 colorful display, easy operation
Ⅲ, Basic Structure
The main detectors have SOSENSE AY05-02 constitute, equipped with accessories have a power adapter , a sampling pen, a calibration thing , some sampling paper.
SOSENSE AY05-02 appearance as shown in the diagram
Accessories are as follows:
Power adapter and charger
Sampling pen
Calibration things
Sampling Paper box
Ⅳ, performance index
SOSENSE AY-0502 performance indicators

Using technology	ion migration spectrum technology and pseudo random sequence ion open the door technology
Can detect kinds	firecrackers, homemade explosives, medicine black powder, ammonium nitrate, TNT, black cable today, taian, nitroglycerin, bowed, son, "Mr G today, C4, etc, and can at any time according to need to add new samples
Sensitivity	10-9g
sampling way	Breathe in and test (equipped with a special sampling pen)
Power	AC 220 V or lithium batteries
Battery parameters	16.8 V / 13 Ah, can work continuously not less than three hours
Power adapter	input 220 V, support online charging and battery charge function alone
Analysis of time	4~10 seconds
Preheat time	less than 15 minutes
Alarm way	audio + display information
Calibration way	manual calibration
Shape dimension	435×133×210（mm）
The weight	4.6 Kg (including battery 1.4 Kg)
Work environment	temperature range-20 ℃ ~ 50 ℃, relative humidity < 99%

Product List

NO.	NAME	UNIT	QUANTITY
1	AY05-02 portable explosive detectors host	set	1
2	power adapter and charger	set	1
3	bsttery	block	1
4	cable	root	1
5	the CD of backend software	piece	1
6	Standard calibration things	single	1
7	Sampling pen	pcs	1
8	Molecular sieve	pce	6
9	Key of molecular	pcs	1
10	dipstick special storage tanks	pcs	3
11	special sampling test paper	pcs	300
12	case	pcs	1
13	product maintenance warranty card	part	1
14	operation manual	part	1

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the protable drugs detector

This drug detector has superior detectivity, it can be directly detect extremely trace amounts of heroin, marijuana, cocaine, ecstasy, viruses and methamphetamine and all kinds of other drugs. Precursor chemicals detection sensitivity can reach up to 10-9 grams or more, the testing time only need ten seconds , is the most practical drug detector in the world at present.
It is a drug detector which use the IMS technology development of ion migration spectrum, use the high and new technology which the trace of the sample ion generation, migration ,identification and ion signal processing. Drug detector is applicable public security, customs and border which use of narcotics department, luggage, etc GaCang drug package of hi-tech equipment.
Technical Detail:
Times of analysis: 4 ~ 10 s;
Sensitivity: 10-9 g;
Sampling method: breathe in and test paper
Alarm way: acoustic and visual alarm
Calibration method: internal automatic calibration
Weight: 4.15 kg (including battery)
Power supply: pay and straight, the battery can remove quickly
Display: Chinese menu, the 3.5-inch colorful screen
Interface: USB port and Network port
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How to Make a Metal Detector Search Coil

The underground metal detector search coils emit oscillating magnetic fields to detect the metal which you want.

A underground metal detector search coil is the rounded coil of wire on the end of the metal detector. The coil is fed a signal by the electronics in the body of the detector and transmits to the area surrounding it via an oscillating electromagnetic field. When the field comes into contact with a metal object, its shape will have changed. This is detected by the coil, which sends a signal back to the electronics in the metal detector, causing a sound that notifies the user of the presence of metal.

If you want to know more about the underground metal detector,you can visit our website:http://www.anjianmen.com ,or send the mail to : anjianmen.com@gmail.com ,we feel honoured to contact with you.