ES2471969B1 - AUTOMATIC AND CONTINUOUS INSPECTION MACHINE - Google Patents

Abstract

Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, and corresponding method. # Includes a frame (100) with an upper zone (102) and a lower zone (103); it comprises a packet supply feeder (104); and in the inspection zone an entrance area (110), a metal detection area (111) and high conductivity elements, a detection area for dusts and other dispersed substances (112), an exit area (117) , provided with a safe (67), portable, receiver of suspicious packages. # The method comprises the stages of supply of the packages, feeding and transport of the packages an entrance area in an inspection machine, subject to a detector of metals, subject to an area of detection of loose particles, selection of whether the package houses dangerous content, and in the negative case expulsion towards an exit zone, and in positive case towards a safe deposit box.

Description

DESCRIPTION

Automatic and continuous inspection machine.

The present invention relates to an automatic and continuous inspection machine, which comprises a set of electronic diagnostic and response instruments, incorporated into a mechanical system, whose programmed synchronization facilitates the early detection of multiple threats and the selective identification of substances and hazardous materials scattered inside closed postal objects for discrimination and isolation. 10

State of the art

The detection of dangerous products in postal items has been carried out manually, so that the selection of the packages that are suspicious are sent to a scanner (which may be fed by tape) to check their content, and in case of that such content is or may be dangerous, isolate it to be treated by specialists, usually in explosives. These detection systems are expensive, for employing an unnecessary amount of personnel, and insecure, since many shipments may not have the status of suspect and be ordinarily taken with the objective risk that this entails. In addition, in the case of chemical or biological agents there are numerous detection failures, which can be positive or negative, so the cost is still increased, and the risk is not sufficiently diminished.

Pre-existing detection systems are characterized by: 25

 It has high operating costs, both for the personnel performing the inspection work and for the set of devices used for it;

 Some of the devices are dangerous for the operators, since they are emitters of radiation, so passive protection measures are required, both of the place where it is located, and of the personnel that access these facilities; adequate preparation of personnel in the area of radiological risks is also required;

 Sterile inspection maneuvers are performed; According to the testimonies of security agents, the only way to check the presence of dusts inside a strange package is by "palpation" to be able to notice packages, or by checking if the shipment has a sender or if it is of origin suspect; this implies a high error rate;

 Late actions are taken; When dust escapes from a package, regardless of whether they actually have a chemical or biological agent, the corresponding safety protocols are activated, which normally include the eviction of the affected property, transfer of the people involved to hospitals for the preventive administration of the required treatment, analysis of the material expelled from the mail in official laboratories (which take several hours to determine an accurate identification of the type of substance committed); mobilization of security personnel, specialized NBQ teams, ambulances, closing traffic lanes, etc. Generating a complex level of waste of resources and social alteration with broad media coverage, which is exactly the effect pursued by terrorists;

 There may be risk of recklessness; the manipulation, manual or by means of non-specific machines, of suspicious material can generate the detonation of hidden devices or the leakage of chemical or biological compounds with unpredictable consequences for the physical integrity of people or in the contamination of the environment;

 The machinery used is complex and heavy designed to be used in the facility in which it is installed, so it cannot be easily transported to vulnerable sites;

 Operational limitation of the individual manual inspection against the enormous load of objects to be studied (eg mass mail in embassies, institutions, etc. That are precisely the main objectives vulnerable to terrorist actions;

 They offer poor detection accuracy, since they depend on the concentration and skill of the safety operator, which can be reduced by various conditions (fatigue, illness, distraction, etc.);

 The functionality is complex, and requires the technical preparation and training of 10 specialized personnel;

 -Fake alarms: as in the case of detectors of pathogens by aspiration (eg suspended anthrax spores) aerial monitors cause unnecessary activation of safety protocols due to failures in the signals obtained. This may be due to the state of the environmental media, number of 15 people located in the enclosure, wind, exogenous interference, etc. Coming to even consider the uninstallation of this kind of equipment for the successive counterproductive effects it causes.

Description of the invention

Throughout the description, packages will be discussed as a general concept referring to envelopes or any other type of packages, boxes or more or less bulky packages.

The present invention consists of an automatic and continuous inspection machine comprising in an integrated unit:

 A frame or support body of the element set; said body may be formed, without limitation, by a structure formed by tubes or solid high strength panels, the base of which is provided with wheels for easy movement; said support body internally comprises a lower zone, in which the various mechanisms and connections are located, and an upper zone, through which the packages run, as well as a cover provided with a packet feeder;

 A control panel, normally arranged on the front;

 An upper feeder, arranged in the upper plane of the support body; The feeder consists of a helical spiral rod that interacts with gravity produces a displacement of the packages to be analyzed until an entrance to the transport system;

 Separating the upper and lower zones, a transport system is provided with at least one motorized conveyor belt, and usually more than one arranged in a juxtaposed way; preferably it comprises at least one conveyor belt in the entrance zone, one in the inspection zone, tilting or oscillating, and a conveyor belt in the exit zone, as well as a feed ramp that moves the packages to the conveyor belt of the inspection zone; it is intended that the conveyor belt be placed on a fixed tray; Four. Five

 Longitudinally, in the direction of the packet travel, the following areas are arranged:

o An entrance area, in which the packages are received, either from the upper feeder (although it could be manually) on a feed ramp, which receives the packages and leads them to the tapes that the 50 will move to the area of Inspection; in this area there is at least one image camera, and preferably at least one front camera and one

overhead chamber; it also comprises at least one photocell for detecting the presence of the package;

o An area of detection of metals and elements of high conductivity, envelope of the conveyor belt; in the corresponding control panel there is a keyboard and a display for programming the scanning frequencies; 5

o A detection area for dusts and other dispersed substances; This area includes:

 a tilting tray with its corresponding supports and tilt and rack motor for the movement of the swingarm stop, said tray provided with the corresponding motorized conveyor belt 10, and a vibrating device provided with a vibrating motor;

 an inductive sensor signal concentrator device;

 a temperature control thermostat inside the machine;

 a heating device by means of infrared radiation, such a microwave emitting device, or both, as well as an optionally a device for regulating the position of the corresponding infrared radiation lamp;

 at least one thermal imager; Y

 at least one capacitive or proximity sensor;

 a high frequency ultrasonic emitting device; and 20

 a thermal imager;

o A preparation area for preliminary identification of the package contents; this area includes;

 An object support tray;

 A laser to cut the inspected object; 25

 A vibration motor;

 A positioning photocell,

 A set of suction devices;

 A transport conduit for the sample obtained;

 Chemical and biological identifiers; and 30

 Ultraviolet lamps for disinfection of the compartment;

o An exit area; understand in turn;

 An output conveyor belt, provided with the corresponding drive motor;

 An exit door, also provided with the corresponding drive motor, with open / closed status sensors;

 A frequency inhibitor;

 An oscillating inclined ramp, which depending on the position allows the package to pass through or instead retains it in a storage area, which can be part of the machine or be external to it. 40

The primary objectives of this invention are the following:

 Solve the security problem established today. It is based on a multifunctional operating system of preventive action against modern terrorist strategies, which use the mail as an unconventional weapon to spread fear and destruction among the civilian population;

 Build robotic machines as mobile rapid intervention units that can easily be transported to strategic points;

 Universal detection; It constitutes a primary analysis-preliminary study that warns about the presence of foreign elements (metals, liquids or powders) in the closed mail, without necessarily determining its specific category, for example detects that there are dispersed crystallizations but does not determine if it refers to substances toxic or flour; perceives the presence of metal components even if it is not verified if it covers

the structure of a detonator, a battery or oxidizing liquids (explosive peroxides); in this phase it is prioritized to avoid an attack (which would be caused when opening the mail or in the detonation by means of radio frequencies);

 Establish action protocols based on a selective identification: “in situ” material is collected from the element that has tested positive in the first monitoring for the identification of the type of agent used in the attack; the favorable conditions established for the collection of the material (temperature control, proximity of the vacuum cleaner with the expelled material), such as the correct transport of the samples, maximizes the effectiveness of portable military meters (biological analyzers, chemical detectors, etc.) ; This innovative automated application facilitates the rapid activation of specific security protocols for the type of aggression suffered; it also avoids the unnecessary deployment of the anti-terrorism operational complex, if it is found that it is a harmless substance (sugar, flour, etc.);

 Unify the response to multiple threats (heterogeneous detections) on the same machine; fifteen

 Provide the state-of-the-art society capable of updating and adapting to the novel criminal modalities of urban terrorism, facilitating the simple incorporation of new detection elements, (coupling them to the matrix machine), as mutations in the terrorist tactics are noticed ;

 Early warning of a terrorist attack; twenty

 Avoid reckless manipulations of suspicious mail;

 Protect people and the environment from criminal actions;

 To constitute a strategic anti-terrorism early warning model;

 Facilitate the monitoring and discrimination of mass mail automatically through precision instruments, avoiding human diagnostic limitations, costs and waste of resources;

 To use jointly and in a coordinated way, avant-garde and highly proven technology in the different areas of industry, military, civil, medicine, etc;

 Establish this innovative machine as a deterrent to criminal intentions. 30

Brief description of the drawings

In order to illustrate the explanation to be followed, we attach seven sheets of drawings to this description, in which the essence of the present invention is represented by way of example, and in which:

Figure 1 shows a schematic side view of the machine of the invention;

Figure 2 shows a schematic perspective view of the machine assembly of Figure 1;

Figure 3 shows a schematic perspective view of the packet feeding device;

Figure 4 shows a general schematic view from the rear, with the packet feeding device provided with a protective housing;

Figure 5 shows a schematic view of the detection zone of the machine, in which the lower part of the tilting conveyor belt is observed;

Figure 6 shows a schematic view of the thermal induction zone of the machine;

Figure 7 shows a detail from a lateral point of view of the exit zone 50 provided with a portable safety box;

Figure 8 shows a view of a detail of the entrance area of the packages; Y

Figures 9 and 10 show paths seen from two different points of the portable safe;

Figure 11 shows a diagram of a preliminary content identification preparation area; Y

Figure 12 shows a diagram of a section of the safe according to a possible embodiment.

Detailed description of the embodiments of the invention

An automatic and continuous inspection machine is described for the control of documents 10 that may be suspected of containing substances or devices that may endanger the health or integrity of people, which is formed by a frame (100) or body of element set support; said body is formed by a tube structure, the base of which is provided with wheels (101) for easy movement. In the frame two zones are defined, an upper zone (102) for transit and inspection of the packages, and a lower zone (103) which essentially comprises mechanical and electrical elements of the machine, or a control organ.

In the upper part there is a packet feeder (104). The feeder consists, according to a particular embodiment, of a spiral spiral rod (11) arranged in a structure (12) with converging walls towards the bottom, which by gravity and by means of the rotation of said spiral spiral, moves the packages to a mouth power (105). The helical spiral rod (11) is rotationally moved by means of a direct drive motor, by means of a motor through a transmission system (19) (preferred embodiment), particularly mechanical, driven by a motor or by means of a motor a 25 gearmotor.

In the embodiment shown, the transmission system is provided with a pair of crowns, a conductor driven by a motor and a conduit that moves the spiral helical rod (11), said crowns connected by a toothed belt. 30

In order to absorb any lock or retention due to the fall of the packages, it is provided that the connection between the motor means and the spiral helical rod takes place by means of an elastic coupling (14).

 35

Control sensors of the rotation and of the resistance exerted by the packages are provided in order to stop the machine in case of impediment to normal operation, or to vary the electrical supply to maintain the desired optimum regularity in the rotation.

The described mechanical assembly of the packet feeder (104) will normally be provided with a protective housing (15).

When the packages fall by gravity in the feeding mouth (105), they fall to the entrance area (110) of the upper zone (102), through a positioning ramp (1), until reaching a first conveyor belt ( 5) normally supported on a fixed tray (6); the conveyor belt (5) (and those that will be described later), will be driven by a motor, a geared motor or a transmission system driven by a motor. In the embodiment shown, an assembly consisting of a motor, tensioner, crowns and belt that move the conveyor belt (5) is observed.

 fifty

In this input area (110) at least one photocell (4) is provided as a package presence detector, and imaging cameras (2,3), preferably at least one overhead camera (3) and one camera and one front camera (2). When the package falls through the

Ramp (1) on the conveyor belt (5), the photocell detects the presence of the packet by what activates the movement of said conveyor belt (5) and the corresponding photographic shots that will be treated by a control organ.

Next, there is a metal detection area (111) that has a metal detection arc (22), which is crossed by the conveyor belt (5), so that in its transit, the package passes through the gap ( 21) passing through the displacement of the conveyor belt (5); in this area the presence of metals and other high conductivity elements is verified; The corresponding control panel comprises a keypad and a viewfinder through which the scan frequencies can be programmed.

 10

After the metal detection area (111) the machine comprises an area for detecting powders and other dispersed substances (112), to which the package is transported after verification of the presence of metals. Said detection area of powders and other dispersed substances comprises one or more of the following components:

or a tilting tray (24) with corresponding supports (29) and tilting motors 15 (41), provided with a motorized conveyor belt (26); The tilting mechanism comprises a rack for the movement of the swingarm stop which produces a reciprocating movement, and a rotation drive motor; the tilting tray (24) also comprises a vibrating device (27); on said tray a photocell of position control (25) of the package is arranged;

or an inductive sensor signal concentrator device;

or a heating device (37) by means of infrared radiation, for example, as well as a regulating device (39) of the position of the corresponding infrared radiation lamp; optionally heating can be done by microwave means;

or a temperature control thermostat inside the machine;

or at least one thermal imager (47);

or at least one capacitive or proximity sensor; Y

or a high frequency ultrasonic emitting device; 30

In this area, the submission to the detection of loose particles is produced, by means of a vibration of the tilting tray (24) that supports the package to be analyzed, said tilting tray (24) tilting towards one of the sides, in which it is located a zone of thermal induction, so that the loose particles that could be inside the package move towards one of its sides. Thus, in said position the displaced particles are subjected to the action of the heating device (37). After the preset heating time, which can be fixed or determined according to the mass of the package, the tilting tray swings to the other side, while maintaining the vibration, so that in case of dust or other particles in inside the package, these are hot and are moved to the cold zone of the package. After this, a thermal image is taken in which it will be possible to observe (manually or automatically) if there are hot spots in the part that should be cold, in short, determining the temperature changes in certain areas of the package. If there is a change in thermal levels, they will determine that the package is suspected of containing powdered or granular substances. Especially when such content is determined, the area described below will operate.

As the final part of the area for detecting powders and other dispersed substances (112), there is the preliminary content identification preparation area (116). This area includes the following 50 elements:

 a tray (50) supporting the package;

 a photocell (52) of package positioning;

 a vibrating device of the tray (51);

 a laser emitter (49) capable of producing small perforations or cuts in the object;

 a suction device (53);

 a transport line (54) of the aspirated samples;

 A device for identifying chemical and biological agents (55), and 5

 UV disinfection lamps.

The package is subjected to cuts or perforations (which can be microperforations) and then to a vibration, so that any dust inside can go outside, and be extracted by the suction device (53) and preanalyzed in the device 10 corresponding identification (55).

Finally, the machine of the invention comprises an exit area (117). This area comprises a package transport package from the preliminary content identification preparation area (116) to the exit area, and a safety box (67) at which the packages are introduced into which suspicious material detected, to be analyzed in suitable location and by specialized personnel. The exit zone is formed by an armored body (119) comprising a door, normally a revolving door (66) that will determine the passage towards an exit zone or towards the safe; the door will be provided with the corresponding motorization, so that in a certain position, and in combination with the position of the transport assembly, it will allow the packages to pass outside, and in another one it will open to allow the corresponding package to pass the safe, to close next.

The exit area (117) will thus comprise the following elements:

 An armored protective housing;

 Means of transport to transport the package from the inside of the machine to the outside, or to the safe (67); normally these means of transport will consist of a tilt conveyor belt that will take different positions depending on whether the package must be accepted or rejected; 30

 A door (66), usually a motorized revolving door, that will allow or close the passage to the safe;

 A housing (65) for the safe (67); This housing may consist of a slot through which the safety box (67) can be inserted by sliding;

 Electrical connections with the safety box to charge or power the devices it contains.

The safety box (67) is an armored box, whose walls form a first protective barrier against an explosion, prevents leaks of hazardous material, unforeseen movements of the object, friction, bumps, etc .; This safety box includes: 40

 A frequency inhibitor (57); the inhibitor the frequency inhibitor will prevent the activation by a radio frequency code of a possible detonator device;

 An oscillating exterior door (69), and a second internal mobile door (80) that closes simultaneously with the external oscillating door (69) when the external lock (70) is operated; Four. Five

 A lock (70) for the safe closing and transport of the content to the analysis laboratory; said lock will also close the revolving door (66);

 A panel with a set of witnesses that indicate the nature and risk of the content in that box;

 An outside accommodation for documents, such as photographs, or reports of the 50 suspect package;

 A locator device;

 The safety box may possibly include wheels or sliding skids to facilitate this work, as well as a handle (68) to facilitate its transport.

Preferably, said safety box (67) comprises an inner box (85) detachable from it with a second shield. Between the safety box and the inner box there is a hollow or porous impact insulating material (86), such as a foam.

The closing doors or covers of the outer box and inner box are synchronized, so that both can be closed simultaneously by a single lock. This supposes a double barrier of protection against a detonation inside the inner box 10 that houses the package.

Finally, the machine comprises a control and governance body of the different mechanisms, with a control panel, normally arranged on the front, with drives and adjustment means of the different controls, sight devices and control indicators, comprising a system for processing, processing, storage and / or transmission of information.

The method of detecting dangerous contents in packages and other postal items used by the device of claim 1 comprises the steps of:

 Supply, feeding and transport of packages to the inspection area; This supply is made by means of conveyor belts or rollers;

 Submission to a metal detector; the package passes through an arc in which by means of the emission of radiation and corresponding detection from the opposite side, it is automatically or manually checked whether the inside of the package contains metallic objects or suspicious forms;

 Submission to an area of detection of loose particles,

 Package selection with or without suspicious content, and

 in the negative case, expulsion towards an exit zone, and in positive case towards a safe deposit box. 30

Submission to the area of detection of loose particles comprises the following operations:

 inclination of the package towards one of its sides; the inclination is carried out by turning the support on which the envelope is supported towards one of the sides along a longitudinal axis 35;

 mechanical vibration of the package and / or the content by means of ultrasound facilitating the movement of possible particles existing inside to the side to which it is inclined; the vibration with the support already inclined or in the inclination phase allows and facilitates that if there are loose particles inside the package, they fall to the lower zone, withdrawing from the higher zones;

 heating of the side of the package arranged in a lower position, by means of a thermal or microwave source, for example; the heating of the package by any source of radiation will also affect the contents inside, so that there may be a hot zone and an unheated zone; Four. Five

 inclination of the package towards the other side; once the heating has been carried out, the heat source ceases and the support on which the package is located is oriented towards the other side by the reverse rotation around the same horizontal axis, but in the opposite direction;

 mechanical vibration of the package and / or of the contents by means of ultrasound facilitating the movement of possible particles existing in the interior towards the side to which it is inclined, the opposite of the previous one; in this way, just as the particles have moved to one side and have been heated along with the rest of the

package content, vibration will allow or facilitate along with the new inclination opposite to the previous one that those hot particles move to the cold side of the package;

 Thermal imaging of the contents of the package, so that it is checked whether there are hot particles that have moved from one side to the other; the thermal image will determine if there are temperature changes inside the package; in the cold zone 5 the content should be kept cold; if a source of heat outside the normal gradient is detected, that is, hot spots in the cold zone, it means that there has been a displacement of a dust or grain content inside the package; A thermography can be taken before the heating phase and another afterwards to determine possible variations. 10

It also includes preliminary preparation operations for content identification, comprising:

 The cutting or microperforation of the package wrapper; This achieves the possibility that the particles or grains contained in the package can be extracted; fifteen

 The vibration of the package; to facilitate the exit by the cuts or perforations realized previously;

 The aspiration of the dust extracted by the vibration and its transport to an identification chamber of dangerous agents; the identification can be carried out, for example, by means of spectrographic analysis or by means of reagents; and 20

 the operation of in situ identification of chemical and biological agents (55).

Claims (32)

1.- Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, characterized in that it comprises a frame (100) carrying the rest of the elements, provided with drag wheels (101), said frame comprising 5 (100), an upper zone (102) and a lower zone (103), where the upper zone constitutes the transit and inspection zone for the packages, and the lower zone the logistics zone for the location of the different electrical, electronic elements, mechanical, and because it comprises an upper feeder supplying the packages (104) to the inspection area; and because in the inspection area it also includes: 10  An entrance area (110);  A metal detection area (111) and high conductivity elements;  A detection area for dusts and other dispersed substances (112);  An exit area (117), provided with a safe (67), portable, receiver of suspicious packages. fifteen 2. Automatic and continuous inspection machine for the detection of dangerous contents in packages and other postal items, according to claim 1, characterized in that the packet feeder (104) consists of a spiral spiral rod (11) arranged in a structure (12) with converging walls towards the bottom, which by gravity and 20 by means of the rotation of said spiral spiral, move the packages to a feeding mouth (105). 3. Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to claim 2, characterized in that the helical spiral rod (11) is rotationally moved by means of a direct drive motor, by means of a motor through a transmission system (19), and comprises an elastic coupling (14) between the engine and the spiral helical rod (11). 4. Automatic and continuous inspection machine for the detection of dangerous contents in packages and other postal items, according to any of claims 1 to 3, 30 characterized in that the upper feeder for supplying the packages (104) is provided with a protective housing (15). 5. Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to any of claims 1 to 4, 35 characterized in that the entrance area comprises a feeding mouth (105), a band conveyor (5), and a ramp that drives the packages from the feeding mouth (105) to the conveyor belt (5). 6. Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to claim 5, characterized in that the entry area further comprises one or more of the following devices:  a photocell (4) as a package presence detector;  an overhead camera (3) for taking pictures  a front camera (2) for taking pictures. Four. Five 7. Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to any of claims 1 to 6, characterized in that the metal detection area (111) and high conductivity elements consists of a metal detector arc (22) crossed in its central hollow (21) by the conveyor belt 50 (5) carrying the analyzed package 8. Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to any of claims 1 to 7, characterized in that the detection area of powders and other dispersed substances; This area includes:  a tilting tray (24) for transporting the package; 5  a vibrating device (27) of the tilting tray  a tilting tray tilting device  a heating device (37) by means of infrared radiation, by means of microwaves or both;  at least one thermal imager (47). 10 9. Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to claim 8, characterized in that the area of detection of powders and other dispersed substances further comprises:  at least one temperature control thermostat (35) inside the machine; fifteen  at least one capacitive or proximity sensor (48); Y  at least one high frequency ultrasonic emitting device. 10. Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to any of claims 8 to 9, 20 characterized in that the area of detection of powders and other dispersed substances also comprises an area of Preparation for preliminary identification of the contents of the package which includes:  A tray (50) supporting the object;  a laser emitter (49) capable of producing small perforations or cuts in the package; 25  A vibrating device of the tray (51);  A suction device (53);  A conduit (54) for transporting the sample obtained to a receiving chamber. 11. Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to claim 10, characterized in that the area for detecting powders and other dispersed substances further comprises a chemical agent identification device. and biological (55). 12. Automatic and continuous inspection machine for the detection of dangerous contents in packages and other postal items, according to any of claims 10 to 11, characterized in that it also includes ultraviolet light lamps for disinfection of the detection area. 13. Automatic and continuous inspection machine for the detection of dangerous contents in packages and other postal items, according to any of claims 1 to 12, characterized in that the exit area (117) further comprises an exit area formed by an armored body (119) comprising:  An output conveyor belt, provided with the corresponding drive motor; Four. Five  An exit door, also provided with the corresponding drive motor, with open / closed status sensors;  Means of transport to transport the package from the inside of the machine to the outside, or to the safe (67);  An oscillating inclined ramp, which selects the passage of the package or diversion to the safety box. 14. Machine, according to claim 13, characterized in that the transport means will consist of a tilting conveyor belt that will take different positions depending on whether the package must be accepted or rejected; 15. Machine according to claim 13, characterized in that the output area comprises a frequency inhibitor (57). 16. Machine according to claim 15, characterized in that the frequency inhibitor is arranged in the safe.  10 17. Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to any of claims 13 to 16, characterized in that the exit area (117) comprises an access door to the box safety, said door being a revolving door (66), provided with the corresponding drive motor. fifteen 18. Automatic and continuous inspection machine for the detection of dangerous contents in packages and other postal items, according to any of claims 1 to 17, characterized in that the exit area (117) comprises an access door to the box security, said door being a revolving door (66), provided with the corresponding drive motor. 19. Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to any of claims 1 to 18, characterized in that the exit area comprises a housing (65) for the safety box (67), such as a sliding engagement slot. 20. Automatic and continuous inspection machine for the detection of dangerous contents in packages and other postal items, according to claim 19, characterized in that the safety box (67) is formed by two bodies, an inner body and a body 30 outer, so that the inner body is susceptible to accommodation inside the outer body. 21. Automatic and continuous inspection machine for the detection of dangerous contents in packages and other postal items, according to claim 20, characterized in that there is a separation between the inner body and the outer body that forms a hollow or is filled with a porous impact insulating material, such as a foam. 22. Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to any of claims 20 to 40 21, characterized in that it comprises: o At least one handle; o An external closing door, such as a swinging door (69); o An external lock (70) for locking the closing door; o Insertion guides in the housing (65); Four. Five o A locator device; o Electrical connections with the exit area. 23.- Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to claim 22, characterized in that it also includes: o A panel with a light indication of the nature and risk of the package contained; o An external document holder. 24.- Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to any of claims 22 to 23, characterized in that the safety box also comprises wheels or sliding skates. 5 25. Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to any of claims 20 to 24, characterized in that the inner body in turn comprises a lock, and because the body lock inside and the lock of the outer body are synchronized and are operated simultaneously by a single closing means. 26.- Automatic and continuous inspection machine, for the detection of dangerous contents in packages and other postal items, according to any of claims 20 to 25, characterized in that it comprises a control body that regulates the operation of the machine, with a corresponding control panel with at least one viewfinder and operating keys, and a system for processing, processing, storage and / or transmission of information. 27.- Method for detecting dangerous contents in packages and other postal items, using the device of claim 1 characterized by comprising the steps of:  Supply of packages to the inspection area;  Feeding and transporting packages an entry area in an inspection machine;  Submission to a metal detector;  Submission to a detection area for loose particles, 25  selection of whether the package hosts dangerous content, and  in the negative case, expulsion towards an exit zone, and in positive case towards a safe deposit box. 28.- Method of detecting dangerous contents in packages and other postal items, according to claim 27, characterized in that the submission to an area of detection of loose particles comprises the operations of:  inclination of the package towards one of its sides;  mechanical vibration of the package and / or of the contents by means of ultrasound facilitating the movement of possible particles existing in the interior towards the side to which it is inclined;  heating of the side of the package arranged in the lower position;  inclination of the package towards the other side;  mechanical vibration of the package and / or of the content by means of ultrasound facilitating the movement of possible particles existing in the interior towards the side to which it is inclined, the opposite of the previous one;  Thermal imaging of the contents of the package, so that it is checked whether there are hot particles that have moved from one side to the other or there is an abnormal thermal variation.  Four. Five 29.- Method for detecting dangerous contents in packages and other postal items, according to claim 28, characterized in that the source is heated by a thermal source, such as an infrared lamp. 30. Method of detecting dangerous contents in packages and other postal items, according to claim 28, characterized in that the source is heated by means of a source of electromagnetic radiation, such as a microwave emission. 31.- Method for detecting dangerous contents in packages and other postal items, according to any of claims 27 to 30, characterized in that it also includes the operations of preliminary preparation of content identification, comprising:  The cutting or microperforation of the package wrapper;  Package 5 vibration  The aspiration of dust extracted by vibration; 32.- Method for detecting dangerous contents in packages and other postal items, according to any of claims 27 to 30, characterized in that it also includes the operation of in situ identification of chemical and biological agents (55). 10