CN200989891Y - In-shoe safety detector - Google Patents
In-shoe safety detector Download PDFInfo
- Publication number
- CN200989891Y CN200989891Y CN 200620166477 CN200620166477U CN200989891Y CN 200989891 Y CN200989891 Y CN 200989891Y CN 200620166477 CN200620166477 CN 200620166477 CN 200620166477 U CN200620166477 U CN 200620166477U CN 200989891 Y CN200989891 Y CN 200989891Y
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- CN
- China
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- output terminal
- control unit
- computer control
- safety detector
- shoe
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- Expired - Lifetime
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Abstract
The utility model discloses a shoe-inside safety detector which is characterized in that the circuit structure of the utility model includes an emission part which consists of an emission coil and a different oscillation frequency production circuit which are arranged on a plane where each shoe bottom is positioned, a receiving part which consists of a receiving coil with the output terminals respectively connected with each preamplifier, a demodulator which is connected between the output terminal of the preamplifier and the input terminal of a microprocessor, the microprocessor which conducts the sampling signals in sequence and sends the sampling signals which are coded to a computer control unit, and a computer control unit which has an amplitude-phase characteristic analysis unit of tested metal object which is disposed and extracted, an output terminal of the computer control unit is connected with a monitor by an interface circuit. The utility model has the advantages of that the consistency of the measuring datum is good, the interference of ambience on the instrument can be solved, meanwhile, the mutual interference between the emission device and the receiving device of the instrument can be overcome, the display of the instrument is obvious, and different content and metal attribute of the metal in the shoes can be displayed.
Description
Technical field
The utility model relates to a kind of safety inspection device, particularly relates to metal detector in a kind of footwear.
Background technology
Existing safety inspection equipment at personnel comprises through type metal detection door, hand-held metal detector etc.But the special detection in the footwear is still a blind area.The way of taking off one's shoes and checking in order whether to have prohibited items, many countries all to adopt in the footwear of checking the passenger.When checking, need the passenger that shoes are taken off, detect by X-ray machine.This kind test mode is time-consuming cumbersome again, in most of occasions, as places such as important meeting, rally, station, harbours, can't require people to take off shoes then and there, checks one by one.Along with increasingly sharpening of terrorist activity, the terrorist may utilize terrorist activity is carried out in the detection blind area of shoes, for this reason, the interior detector of footwear that just needs a special use of exploitation, when people stand on the detection zone top, can be automatically to detecting in real time in the footwear, to determine whether measurand has prohibited items.
Summary of the invention
The purpose of this utility model provides a kind of in-shoe safety detector, to solve the technical matters that detects at the metal in the footwear specially, also solves the detection of technical matters distinguish to(for) the material that is detected metal simultaneously.
The parts and the circuit structure of in-shoe safety detector described in the utility model comprise:
Radiating portion is made up of the different oscillation frequency generation circuit that the transmitting coil that is located on the plane, every sole place is connected with each transmitting coil two ends;
Receiving unit is made up of the receiving coil that is provided with corresponding to each transmitting coil of radiating portion, and described receiving coil is adjacent to the transmitting coil setting of correspondence, and its output terminal connects prime amplifier separately respectively;
Detuner, this detuner are connected between prime amplifier output terminal and the microprocessor input end;
Microprocessor, conducting sampled signal in order, and will send into computer control unit behind the sampled signal coding, and its input end is connected with the output terminal of modulator-demodular unit, and output terminal is changed by amplifying circuit and A/D and is connect computer control unit;
Computer control unit has and handles the width of cloth-phase behaviour analytic unit that extracts detected metal target, and its output terminal connects a display that shows the polar plot of detected metal target by interface circuit.
Aforesaid in-shoe safety detector, the output terminal of described computer control unit connects a LCD display by interface.
Aforesaid in-shoe safety detector, described radiating portion are installed on one to have on the spacing device of footprint, and described footprint limit method comprises optoelectronic switch, mechanical switch or spacing concavo-convex pin shape structure.
Aforesaid in-shoe safety detector, described emission, receiving coil are mutually parallel adjacent setting or adjacent at a certain angle setting.
Aforesaid in-shoe safety detector, one side apart from ground of the footprint stop means at described radiating portion place, the shielding construction of employing metal and the two-layer separation layer of ferrite.
The utility model is compared with traditional safety check apparatus, unjust detects rapidly and simple to operate, can allow the passenger rapidly by safety inspection, and the delay of being unsatisfied with of avoiding that the passenger causes because of taking off one's shoes and minimizing time.
The utlity model has following advantage:
1, the high conformity of each measurement data that in-shoe safety is detected;
2, the interference of surrounding environment can be solved, the emission of this instrument, the phase mutual interference of receiving trap can also be overcome simultaneously this instrument;
3, the intuitive display of instrument can show the different content and the metal properties of metal in the footwear.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present utility model.
Fig. 2 is the structural representation of reception of the present utility model, radiating portion.
Embodiment
Structure of the present utility model and principle of work are described as follows with reference to Fig. 1, Fig. 2:
Circuit block diagram shown in Fig. 1 is an embodiment of the present utility model.This detector comprises and is located at every transmitting coil on the sole to be measured plane and is located near the transmitting coil receiving coil, to induce the electromagnetic signal whether metal and metal properties are arranged in the reflection footwear.Described transmitting coil connects corresponding oscillation frequency and produces circuit, and the output terminal of receiving coil send detuner by prime amplifier with the signal that receives.
Several are by the signal of demodulation can conducting be taken a sample, encoded in order, amplification and A/D conversion be sent to computing machine by computer-controlled sampling switch circuit, are shown with the form of polar plot after by Computing by the detection signal after the demodulation detection.Detect metal properties first quartile in vector and just be judged as ferrous metal, second quadrant is judged as non-ferrous metal, and the size of signal amplitude is passed through data presentation.More than the control circuit form of coding, gating can adopt existing other control modes, controls as microprocessor.In order to realize technique scheme better, eliminate signal jitter and noise owing to external environment influence or circuit generation itself, the circuit of this instrument can adopt the control technology of phase stabilization.The signal Processing of this instrument is to adopt Real-time Transmission, real-time processing technique and real-time display technique, handles and extracts a phase behaviour of detected metal target, and demonstrate the polar plot of detected metal target on display.
Because rays safety detection apparatus is many and works simultaneously, is necessary so many rays safety detection apparatus are networked, and promptly will guarantee the operate as normal of individual system, the work of can networking again.
Fig. 2 is the structural representation of reception of the present utility model, radiating portion.Because the size of detecting coil has certain scope, the position that tested personnel's both feet are placed is relevant with reading, so this instrument employing footprint limit method, allows the position of tested pin keep within the specific limits, tested pin meets status requirement and just begins test, otherwise just refusal test.Intend to adopt optoelectronic switch, mechanical switch or only all can play position-limiting action with spacing preiection etc.
Because what install in the detecting head is two covers (each cover of left and right sides pin) balancing coils, to around launch electromagnetic field, near metal objects such as reinforcing bar can be destroyed the balance of source electromagnetic field, influence measuring accuracy, can't work because of balance is destroyed in the time of seriously.For solving this contradiction process experiment, adopt the single face method for shielding, promptly adopt the shielding construction of metal and the two-layer isolation of ferrite, thereby reduce the closely influence of reinforcing bar in distance ground one side, probe can place any position equal energy operate as normal on floor.
Detecting coil can be by the mode of plane stack, sees shown in Figure 1.Reception wherein and transmitting coil 4,2 are wrapped in respectively on interior loop skeleton 3 and the exterior loop skeleton 1.Described reception and transmitting coil 4,2 are positioned at the below of measured object, promptly have the footprint below of footprint stop means.Below reception and transmitting coil 4,2, be provided with metal and the two-layer Isolated Shield layer of ferrite.Described reception and transmitting coil also can be by the vertical direction settings.By the corresponding detection of a pair of reception sole of plane setting, by a pair of or some metalworks that coil is carried secretly for the detection calf of vertical direction with transmitting coil.The oscillation frequency of described emission, receiving coil can be 6.4K, isolates and does not disturb mutually for many instruments, need separate the 3m distance between the instrument in the use.
Claims (5)
1, a kind of in-shoe safety detector is characterized in that its circuit structure comprises:
Radiating portion is made up of the different oscillation frequency generation circuit that the transmitting coil that is located on the plane, every sole place is connected with each transmitting coil two ends;
Receiving unit is made up of the receiving coil that is provided with corresponding to each transmitting coil of radiating portion, and described receiving coil is adjacent to the transmitting coil setting of correspondence, and its output terminal connects prime amplifier separately respectively;
Detuner, this detuner are connected between prime amplifier output terminal and the microprocessor input end;
Microprocessor, conducting sampled signal in order, and will send into computer control unit behind the sampled signal coding, and its input end is connected with the output terminal of modulator-demodular unit, and output terminal is changed by amplifying circuit and A/D and is connect computer control unit;
Computer control unit has and handles a phase behaviour analytic unit that extracts detected metal target, and its output terminal connects a display that shows the polar plot of detected metal target by interface circuit.
2, in-shoe safety detector as claimed in claim 1 is characterized in that: the output terminal of described computer control unit connects a LCD display by interface.
3, in-shoe safety detector as claimed in claim 1 is characterized in that: described radiating portion is installed on one to have on the spacing device of footprint, and described footprint limit method comprises optoelectronic switch, mechanical switch or spacing concavo-convex pin shape structure.
4, in-shoe safety detector as claimed in claim 1 is characterized in that: described emission, receiving coil are parallel adjacent setting or adjacent at a certain angle setting mutually.
5, in-shoe safety detector as claimed in claim 1 is characterized in that: one side apart from ground of the footprint stop means at described radiating portion place, the shielding construction of employing metal and the two-layer separation layer of ferrite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620166477 CN200989891Y (en) | 2006-12-28 | 2006-12-28 | In-shoe safety detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620166477 CN200989891Y (en) | 2006-12-28 | 2006-12-28 | In-shoe safety detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200989891Y true CN200989891Y (en) | 2007-12-12 |
Family
ID=38940928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620166477 Expired - Lifetime CN200989891Y (en) | 2006-12-28 | 2006-12-28 | In-shoe safety detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200989891Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102713584A (en) * | 2009-11-18 | 2012-10-03 | 拉皮斯坎系统股份有限公司 | X-ray based system and methods for inspecting a person's shoes for aviation security threats |
-
2006
- 2006-12-28 CN CN 200620166477 patent/CN200989891Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102713584A (en) * | 2009-11-18 | 2012-10-03 | 拉皮斯坎系统股份有限公司 | X-ray based system and methods for inspecting a person's shoes for aviation security threats |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: WANG JUNLING ^ |
|
| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: Wang Junling Number: 50 Page: The title page Volume: 23 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: Wang Junling Number: 50 Volume: 23 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ^ TO: WANG JUNLING ^ |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090729 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |