CN201749103U - Metal detector for soles - Google Patents
Metal detector for soles Download PDFInfo
- Publication number
- CN201749103U CN201749103U CN2009202142444U CN200920214244U CN201749103U CN 201749103 U CN201749103 U CN 201749103U CN 2009202142444 U CN2009202142444 U CN 2009202142444U CN 200920214244 U CN200920214244 U CN 200920214244U CN 201749103 U CN201749103 U CN 201749103U
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- metal
- counter
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Abstract
The utility model relates to a portable metal detector for soles, which has the characteristics of convenience of use, accurate detection, good environmental adaptability, and low energy consumption. The portable metal detector includes a power source part, a metal detection part, and an alarming indication part, wherein the power source part adopts an external power source and a rechargeable lithium battery; the metal detection part includes an LC oscillating circuit, an RC frequency-selection network, an operational amplification circuit, and a comparison circuit, and the operational amplification circuit adopts an operational amplifier; and the alarming indication part includes a counter and an indicator light. When a metal exists, alarming signals are sent and amplified through the operational amplifier, alarming voltage which is close to the voltage of the power source is output, an alarming indication circuit is driven, and an LED light turns read for alarming; and pulse voltage for alarming is sent to the counter, the counter adopts a single chip to accumulate received pulse voltage, a Nixie tube is driven, and alarming times are displayed and stored. The metal detector has the advantages of convenience of use, accurate detection, good environmental adaptability, low energy consumption and portability.
Description
Technical field
The utility model relates to the metal detector in a kind of security field, especially a kind of sole metal detector.
Background technology
Metal detector is widely used in safe important places such as airport, military base, government department and the counterterrorist activity, is used to detect the metallic article that may be used for hazardous activity, as cutter, gun, ammunition and parts thereof etc.Its principle is to utilize the principle of electromagnetic induction, utilizes the coil that has alternating current to pass through, and produces vertiginous magnetic field, this magnetic field energy vortex flow of inducting in metal object inside, vortex flow can produce magnetic field again, turns the original magnetic field of influence around, causes detector and sends song.Shoes especially sole are the common place of hiding above-mentioned hazardous metals goods, and the existing sole metal detector in market is mainly by following two several of main problems of partly forming and existing:
1, metal detection part:
For solving detection sensitivity and left and right sides pin interference problem, the scheme of taking is to increase detection area and the spacing that increases left and right sides pin detector.Cause small product size huge.
2, processing, control section:
A): complicated operation, after detecting head detects metal, analyze and display result by built-in software systems, bulky, be not easy to deploy troops on garrison duty fast.
B): infrared probe is housed, can only be single pin survey or must survey simultaneously by both feet, and pin must cut off infrared ray and could start search switch, just can detect.
C): environment is suitable for ability, as long as move detector, the parameter of environment changes, and software systems must reinitialize, and just can enter normal mode of operation.
D): non-ferrous metal can not be discerned automatically, needs external circuit control metal detection, if nobody stands on the detector, detector can't enter normal mode of operation.
E): to by security staff's stance, there is too much requirement the time of standing, as by the security staff, before standing, later, tilt, do not cut off infrared ray and starting switch, all can't survey.
F): no reserve battery, no renewable sources of energy charging.
Summary of the invention
The purpose of this utility model be to provide a kind of easy to use, survey accurately, accommodative ability of environment is strong, energy consumption is little portable shoe substrate detector.
The utility model is achieved in that a kind of sole metal detector, it is characterized in that comprising power supply unit, metal detection portion and warning instruction unit; Described power supply unit is external power supply or chargeable lithium cell, links to each other with the warning instruction unit with metal detection portion respectively; Described metal detection portion links to each other with the warning instruction unit, comprise LC oscillatory circuit, RC frequency selection network, discharge circuit and comparator circuit, its order of connection connects the RC frequency selection network for the LC oscillatory circuit, and the RC frequency selection network connects discharge circuit, and discharge circuit connects comparator circuit; Described discharge circuit is an operational amplifier; Described warning instruction unit links to each other with power supply unit with metal detection portion respectively, comprises alarm indication circuit and the counter and the pilot lamp that are connected with the alarm indication circuit.
Metal detection adopts modern the detection and switch technology, utilize the magnetic strength principle to detect metal, power unit is by 9V power supply adaptor and (3.7V lithium battery, by boost module, boost to 9V) to circuit board power supply, charging circuit by the voltage stabilizing of 9V adapter to 5V with too can sun can plate, input to charging IC, lithium battery is charged, and pilot lamp is red during charging, and the saturated back of charging is a green light.The metal detection part is formed the LC oscillatory circuit by telefault and electric capacity, produce an oscillation frequency, when metal, can change the LC oscillation frequency, after the RC frequency selection network detects frequency and changes, send alerting signal, alerting signal is amplified by operational amplifier, compare with the voltage comparator of back, export an alarm voltage that approaches supply voltage.Alarm voltage drives the alarm indication circuit, and the alarm indication circuit is made up of LED lamp and hummer, and the LED lamp is a red light during warning, and hummer rings simultaneously.The pulse voltage of reporting to the police simultaneously is sent to counter, and counter drives charactron by the warning pulse voltage that single-chip microcomputer accumulative total receives, the display alarm number of times, and preserve.The voltage signal that the output of discharge circuit 14 pin is directly proportional with amount of metal, be sent to voltage comparator circuit, compare, the reference voltage of comparer is by the 5V dividing potential drop, export 4 road voltages to be compared and 14 pin voltages compare, output is shown as magnetic field intensity and shows, the magnetic field intensity pilot lamp be about two rows' the LED of burn reds, magnetic field intensity is big more, bright many more of LED lamp.Detect minute metallic, can send once and report to the police, but the magnetic field intensity pilot lamp is little bright.The barrier warning light is by light sensor, and by amplifying circuit, the output indicated number is seven color LED lamps all around.Light is dark more, and lamp is bright more.Humiture and time show, by the IC chip, and by coding, the humiture in the display environment, and time.Sound light alarming circuit, sound are regulated by programmable I C coding, the size of control sound.
Metal detection portion and warning instruction unit all are divided into left and right sides two parts, corresponding left and right sides pin respectively, but do not limit which be a left side which be right, Yi Bian as have only metal arranged, the pilot lamp of bright this side only then.
Because metal detection is partly understood the direct detection metal and is shown by pilot lamp, do not need software to handle, institute is so that the utility model smaller volume, adding does not need the infrared ray activation member, so the utility model volume further diminishes, make portable produced may, and can single pin, both feet survey, to the stance and the time no requirement (NR) of standing.Do not need software that environmental parameter is detected, and only metal is carried out direct detection, environment-adapting ability of the present utility model is strengthened greatly, the utility model is moved and changes position probing, all can enter duty immediately.Simultaneously, owing to saved running software energy consumption and infrared probe energy consumption, overall energy consumption of the present utility model reduced greatly, so can adopt lithium battery power supply, also can adopt external power supply power supply (prior art can only adopt the external power supply power supply because energy consumption is big).According to the size of metallics content or the size of area, pilot lamp can be with bright how much representing, accuracy height.
Compare with original technology, the utility model has following projecting point:
A): simple to operate, volume is ultra-thin extra small, and is portable.
B): can single pin, both feet are surveyed arbitrarily.
C): it is strong that environment is suitable for ability.
D) whether: can discern automatically has metal, and reports to the police.
E): to by security staff's stance, the time no requirement (NR) of standing.
F): reserve battery is arranged, and utilize renewable sources of energy charging.Environmental protection, safety.
G): have in than dark situation barrier to remind the LED indication at light, prevent pedestrian impact.
In sum, the utlity model has easy to use, survey accurately, accommodative ability of environment is strong, energy consumption is little, characteristics that can be portable.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model embodiment;
Fig. 2 is the outward appearance general illustration of the utility model embodiment;
Among the figure:
1, switch 2, metal detection portion 3, counter 4, pilot lamp
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and exemplary embodiments.
In Fig. 1, the utility model comprises power supply unit, metal detection portion and warning instruction unit; Described power supply unit is external power supply or chargeable lithium cell; Described metal detection portion comprises LC oscillatory circuit, RC frequency selection network, discharge circuit and comparator circuit, and described discharge circuit is an operational amplifier; Described warning instruction unit comprises counter and pilot lamp.Power unit by the 9V power supply adaptor with power to circuit board.The metal detection part is formed the LC oscillatory circuit by telefault and electric capacity, produce an oscillation frequency, when metal, can change the LC oscillation frequency, after the RC frequency selection network detects frequency and changes, send alerting signal, alerting signal is amplified by operational amplifier, compare with the voltage comparator of back, export an alarm voltage that approaches supply voltage.Alarm voltage drives the alarm indication circuit, and the alarm indication circuit is made up of LED lamp and hummer, and the LED lamp is a red light during warning, and hummer rings simultaneously.The pulse voltage of reporting to the police simultaneously is sent to counter, and counter drives charactron by the warning pulse voltage that single-chip microcomputer accumulative total receives, the display alarm number of times, and preserve.The voltage signal that the output of discharge circuit 14 pin is directly proportional with amount of metal, be sent to voltage comparator circuit, compare, the reference voltage of comparer is by the 5V dividing potential drop, export 4 road voltages to be compared and 14 pin voltages compare, output is shown as magnetic field intensity and shows, the magnetic field intensity pilot lamp be about two rows' the LED of burn reds, magnetic field intensity is big more, bright many more of LED lamp.Detect minute metallic, can send once and report to the police, but the magnetic field intensity pilot lamp is little bright.
In Fig. 2, open switch 1 after, after the metal detection portion 2 on both sides had detected metal, pilot lamp 4 can be bright, the quantity of bright lamp is directly proportional with content that is detected metal or volume.The pulse voltage of reporting to the police simultaneously is sent to counter 3, and counter 3 drives charactron by the warning pulse voltage that single-chip microcomputer accumulative total receives, the display alarm number of times, and preserve.
Claims (1)
1. the sole metal detector is characterized in that comprising power supply unit, metal detection portion and warning instruction unit; Described power supply unit is external power supply or chargeable lithium cell, links to each other with the warning instruction unit with metal detection portion respectively; Described metal detection portion links to each other with the warning instruction unit, comprise LC oscillatory circuit, RC frequency selection network, discharge circuit and comparator circuit, its order of connection connects the RC frequency selection network for the LC oscillatory circuit, and the RC frequency selection network connects discharge circuit, and discharge circuit connects comparator circuit; Described discharge circuit is an operational amplifier; Described warning instruction unit links to each other with power supply unit with metal detection portion respectively, comprises alarm indication circuit and the counter and the pilot lamp that are connected with the alarm indication circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202142444U CN201749103U (en) | 2009-11-26 | 2009-11-26 | Metal detector for soles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202142444U CN201749103U (en) | 2009-11-26 | 2009-11-26 | Metal detector for soles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201749103U true CN201749103U (en) | 2011-02-16 |
Family
ID=43583779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202142444U Expired - Fee Related CN201749103U (en) | 2009-11-26 | 2009-11-26 | Metal detector for soles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201749103U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459822A (en) * | 2014-12-05 | 2015-03-25 | 同方威视技术股份有限公司 | Human body safety check equipment |
-
2009
- 2009-11-26 CN CN2009202142444U patent/CN201749103U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459822A (en) * | 2014-12-05 | 2015-03-25 | 同方威视技术股份有限公司 | Human body safety check equipment |
| US10107903B2 (en) | 2014-12-05 | 2018-10-23 | Nuctech Company Limited | Human body security inspection apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20181126 |