WO2008080267A1 - Cppp a safety detector for the internal of shoes - Google Patents
Cppp a safety detector for the internal of shoes Download PDFInfo
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- WO2008080267A1 WO2008080267A1 PCT/CN2007/000331 CN2007000331W WO2008080267A1 WO 2008080267 A1 WO2008080267 A1 WO 2008080267A1 CN 2007000331 W CN2007000331 W CN 2007000331W WO 2008080267 A1 WO2008080267 A1 WO 2008080267A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
- G01V3/105—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
Definitions
- the present invention relates to a safety inspection device, and more particularly to an in-shoe metal inspection
- the components and circuit structure of the in-shoe safety detector of the present invention include:
- the transmitting portion is composed of a transmitting coil disposed on a plane of each sole and a different oscillation frequency generating circuit connected at both ends of each transmitting coil;
- the receiving portion is composed of a receiving coil corresponding to each transmitting coil of the transmitting portion, the receiving coil is disposed adjacent to the corresponding transmitting coil, and the output ends thereof are respectively connected to the respective preamplifiers;
- a demodulator coupled between the output of the preamplifier and the input of the microprocessor
- the computer control unit has an input end connected to the output end of the modem, and an output end connected to the computer control unit through an amplifying circuit and an A/D conversion;
- the computer control unit has a amplitude-phase characteristic analysis unit for processing the extracted metal target, and an output terminal thereof is connected to the display of the vector map of the detected metal target through the interface circuit.
- the output of the computer control unit is connected to an LCD display through an interface.
- the transmitting portion is mounted on a device having a footprint limit
- the footprint limit manner includes a photoelectric switch, a mechanical switch or a limit concave-and-concave structure.
- the transmitting and receiving coils are disposed adjacent to each other in parallel or adjacently at an angle.
- the footprint of the footprint limiting device on which the transmitting portion is located is on the ground side, and a shielding structure of two layers of metal and ferrite is used.
- the invention is quick and easy to operate, and allows the passenger to quickly pass the safety inspection, and avoids the passenger's dissatisfaction caused by taking off the shoes and reduces the time delay.
- FIG. 3 is a block diagram of the circuit of the present invention.
- FIG. 2 is a block diagram showing the structure of the receiving and transmitting portions of the present invention. Embodiments of the Invention The structure and working principle of the present invention are described below with reference to Figs. 1 and 2:
- the circuit block diagram shown in Figure 1 is a specific embodiment of the present invention.
- the detector includes a transmitting coil disposed on a plane of each foot to be tested and a connection disposed near the transmitting coil The coil is received to sense an electromagnetic signal reflecting the presence of metal and metal properties in the shoe.
- the transmitting coil is connected to a corresponding oscillating frequency generating circuit, and the output end of the receiving coil sends the received signal to the demodulator through the preamplifier.
- a plurality of demodulated signals can be sequentially turned on, sampled, encoded, amplified, and A/D converted to a computer through a computer controlled sampling circuit, and the detected signal after demodulation is calculated by a computer.
- the form of the vector is shown.
- the detected metal attribute is judged as ferrous metal in the first quadrant of the vector, and the second quadrant is judged as colored metal, and the magnitude of the signal amplitude is displayed by data.
- the above coding and strobing control circuit forms can be controlled by other existing control methods, such as microprocessor control.
- the circuit of the instrument can adopt phase stable control technology.
- the signal processing of the instrument uses real-time transmission technology, real-time processing technology and real-time display technology to process the amplitude-phase characteristics of the detected metal target and display the vector image of the detected metal target on the display.
- Figure 2 is a block diagram showing the structure of the receiving and transmitting portions of the present invention. Since the size of the detecting coil has a certain range, the position of the measured person's feet is related to the reading. Therefore, the instrument adopts the footprint limit mode to keep the position of the measured foot within a certain range, and the measured foot meets the position requirement. Start the test, otherwise reject the test. It is proposed to use photoelectric switch, mechanical switch or only limit protrusion to play the limit function.
- the single-sided magnetic shielding method is adopted, that is, a shielding structure with two layers of metal and ferrite isolated from the ground side, thereby reducing the influence of the close-distance steel bars, and the probe can be placed at any position on the floor. Can work normally.
- the detection coils can be superimposed in a plane, as shown in Figure 1.
- the receiving and transmitting coils 4, 2 are wound around the inner bobbin 3 and the outer bobbin 1, respectively.
- the receiving and transmitting coils 4, 2 are located below the object under test, ie under the footprint of the footprint limiting device.
- a metal and ferrite two-layer isolation shielding layer is disposed under the receiving and transmitting coils 4, 2.
- the receiving and transmitting coils can also be arranged in a vertical direction.
- a pair of receiving and transmitting coils arranged in a plane are used to detect the sole, and a pair or a pair of coils in the vertical direction are inspected. Measure the metal parts entrained in the calf.
- the oscillation frequency of the transmitting and receiving coils may be
- the distance between the instruments should be separated by 3m.
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- Environmental & Geological Engineering (AREA)
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Abstract
A safety detector for the internal of shoes includes a transmitter unit which is composed of transmitter coils located on the plane of each sole and generation circuits of different oscillation frequencies, a receiver unit which is composed of receiver coils and the outputs thereof are connected respectively with respective preamplifier; a demodulator which is connected between the output of the preamplifier and the input of a microprocessor, a microprocessor which makes the sampling signal on in turn and sends to a computer controlling unit after encoding the sampling signal, a computer controlling unit which has an analyzing unit for processing the extracted magnitude and phase characteristic of the detected metal object and the output thereof is connected with a display via an interface circuit.
Description
鞋内安全检测仪 技术领域 本发明涉及一种安全检查装置， 特别是涉及一种鞋内金属检 TECHNICAL FIELD The present invention relates to a safety inspection device, and more particularly to an in-shoe metal inspection
背景技术 现有针对人员的安全检查设备包括通过式金属检测门、手持式金 属探测器等。 但是对鞋内的专门检测仍是一个盲区。 为了检查旅客的 鞋内是否有违禁物品， 许多国家都釆用脱鞋检査的做法。 在检査时需 要旅客将鞋子脱下， 通过 X光机检测。 此种检查方式费时又繁锁， 在 大多数场合， 如重要的会议、 集会、 车站、 码头等场所， 无法要求人 们当场脱下鞋子， 逐个检查。 随着恐怖活动的日益加剧， 恐怖分子可 能利用对鞋子的检测盲区进行恐怖活动， 为此， 就需要开发一个专用 的鞋内检测仪， 当人们立于检测区上方时， 能自动地对鞋内进行实时 检测， 以确定被测对象是否带有违禁物品。 发明内容 本发明的目的是提供一种鞋内安全检测仪， 以解决专门针对鞋内 的金属进行检测的技术问题， 同时还解决对于被探测金属的材质进行 区别检测的技术问题。 BACKGROUND OF THE INVENTION Existing security inspection devices for personnel include pass-through metal detection doors, hand-held metal detectors, and the like. However, the special inspection inside the shoe is still a blind spot. In order to check whether there are prohibited items in the passenger's shoes, many countries use the method of taking off shoes. During the inspection, the passenger is required to take off the shoes and test them by X-ray machine. This type of inspection is time-consuming and cumbersome. In most occasions, such as important meetings, gatherings, stations, docks, etc., it is impossible to ask people to take off their shoes on the spot and check them one by one. As terrorist activities intensify, terrorists may use terrorist activities to detect blind spots in their shoes. To this end, it is necessary to develop a special in-shoe detector that automatically pairs the shoes when they stand above the detection area. Perform real-time testing to determine if the object under test has prohibited items. SUMMARY OF THE INVENTION It is an object of the present invention to provide an in-shoe safety detector that solves the technical problem of specifically detecting the metal in the shoe, and also solves the technical problem of distinguishing the material of the metal to be detected.
本发明所述鞋内安全检测仪的部件及电路结构包括： The components and circuit structure of the in-shoe safety detector of the present invention include:
发射部分， 由设在每只脚底所在平面上的发射线圈和每个发射线 圈两端连接的不同振荡频率产生电路组成； The transmitting portion is composed of a transmitting coil disposed on a plane of each sole and a different oscillation frequency generating circuit connected at both ends of each transmitting coil;
接收部分， 由对应于发射部分的每个发射线圈而设置的接收线圈 组成， 所述接收线圈相邻于对应的发射线圈设置， 其输出端分别接各 自的前置放大器； The receiving portion is composed of a receiving coil corresponding to each transmitting coil of the transmitting portion, the receiving coil is disposed adjacent to the corresponding transmitting coil, and the output ends thereof are respectively connected to the respective preamplifiers;
解调器， 该解调器连接在前置放大器输出端与微处理器输入端之 间； a demodulator coupled between the output of the preamplifier and the input of the microprocessor;
微处理器， 按顺序导通取样信号， 并且将取样信号编码后送入计
算机控制单元， 其输入端与调制解调器的输出端相连接， 输出端通过 放大电路和 A/D转换接计算机控制单元； a microprocessor that turns on the sampling signal in sequence, and encodes the sampled signal and sends it to the meter The computer control unit has an input end connected to the output end of the modem, and an output end connected to the computer control unit through an amplifying circuit and an A/D conversion;
计算机控制单元， 具有处理提取出被检测金属目标的幅一相特性 分析单元， 其输出端通过接口电路接一个显示被检测金属目标的矢量 图的显示器。 The computer control unit has a amplitude-phase characteristic analysis unit for processing the extracted metal target, and an output terminal thereof is connected to the display of the vector map of the detected metal target through the interface circuit.
如上所述的鞋内安全检测仪， 所述计算机控制单元的输出端通过 接口接一个 LCD显示器。 In the in-shoe safety detector as described above, the output of the computer control unit is connected to an LCD display through an interface.
如上所述的鞋内安全检测仪， 所述发射部分安装于一个具有脚印 限位的装置上， 所述脚印限位方式包括光电开关、 机械开关或限位凹 凸脚形结构。 In the in-shoe safety tester as described above, the transmitting portion is mounted on a device having a footprint limit, and the footprint limit manner includes a photoelectric switch, a mechanical switch or a limit concave-and-concave structure.
如上所述的鞋内安全检测仪， 所述发射、 接收线圈互相为平行相 邻设置或以一定角度相邻设置。 In the in-shoe safety tester as described above, the transmitting and receiving coils are disposed adjacent to each other in parallel or adjacently at an angle.
如上所述的鞋内安全检测仪， 所述发射部分所在的脚印限位装置 的距地面一侧， 采用金属和铁氧体两层隔离层的屏蔽结构。 In the in-shoe safety detector as described above, the footprint of the footprint limiting device on which the transmitting portion is located is on the ground side, and a shielding structure of two layers of metal and ferrite is used.
本发明与传统的安检装置相比， 不公检测迅速且操作简单， 能让 旅客迅速通过安全检查， 而且避免旅客因脱鞋引起的不满意并减少时 间的延误。 Compared with the conventional security inspection device, the invention is quick and easy to operate, and allows the passenger to quickly pass the safety inspection, and avoids the passenger's dissatisfaction caused by taking off the shoes and reduces the time delay.
本发明具有如下优点： The invention has the following advantages:
1、 对鞋内安全检测的每次测量数据的一致性好； 1. The consistency of each measurement data for the safety inspection of the shoe is good;
2、 能够解决周围环境对本仪器的干扰， 同时还能克服本仪器的 发射、 接收装置的相互干扰； 2. It can solve the interference of the surrounding environment to the instrument, and at the same time overcome the mutual interference of the transmitting and receiving devices of the instrument;
3、 仪器的显示直观， 能够显示鞋内金属的不同含量及金属属性。 附图概述 图 1是本发明的电路原理框图。 3, the instrument display is intuitive, can display the different content of metal in the shoe and metal properties. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a block diagram of the circuit of the present invention.
图 2是本发明的接收、 发射部分的结构示意图。 本发明的实施例 本发明的结构及工作原理参照图 1、 图 2说明如下： Figure 2 is a block diagram showing the structure of the receiving and transmitting portions of the present invention. Embodiments of the Invention The structure and working principle of the present invention are described below with reference to Figs. 1 and 2:
图 1示出的电路方框图为本发明的一个具体实施方式。该检测仪 包括设在每只待测脚底平面上的发射线圈和设在发射线圈附近的接
收线圈， 以感应出反映鞋内是否有金属及金属属性的电磁信号。 所述 发射线圈接对应的振荡频率产生电路， 接收线圈的输出端通过前置放 大器将接收到的信号送解调器。 The circuit block diagram shown in Figure 1 is a specific embodiment of the present invention. The detector includes a transmitting coil disposed on a plane of each foot to be tested and a connection disposed near the transmitting coil The coil is received to sense an electromagnetic signal reflecting the presence of metal and metal properties in the shoe. The transmitting coil is connected to a corresponding oscillating frequency generating circuit, and the output end of the receiving coil sends the received signal to the demodulator through the preamplifier.
若干个被解调的信号可以通过计算机控制的取样幵关电路按顺 序导通取样、 再进行编码、 放大和 A/D转换送入到计算机， 被解调检 波后的检测信号由计算机运算后以矢量图的形式显示出来。 检测金属 属性在矢量中第一象限就判断为黑色金属， 第二象限判断为有色金 属， 信号幅度的大小通过数据显示。 以上编码、 选通的控制电路形式 可以采用现有的其他控制方式， 如微处理器控制。 为了更好地实现上 述技术方案， 消除由于外部环境影响或电路本身产生的信号抖动和噪 声， 本仪器的电路可以采用相位稳定的控制技术。 本仪器的信号处理 是采用实时传输技术、 实时处理技术及实时显示技术， 处理提取出被 检测金属目标的幅一相特性， 并在显示器上显示出被检测金属目标的 矢量图。 A plurality of demodulated signals can be sequentially turned on, sampled, encoded, amplified, and A/D converted to a computer through a computer controlled sampling circuit, and the detected signal after demodulation is calculated by a computer. The form of the vector is shown. The detected metal attribute is judged as ferrous metal in the first quadrant of the vector, and the second quadrant is judged as colored metal, and the magnitude of the signal amplitude is displayed by data. The above coding and strobing control circuit forms can be controlled by other existing control methods, such as microprocessor control. In order to better implement the above technical solution and eliminate signal jitter and noise generated by the external environment or the circuit itself, the circuit of the instrument can adopt phase stable control technology. The signal processing of the instrument uses real-time transmission technology, real-time processing technology and real-time display technology to process the amplitude-phase characteristics of the detected metal target and display the vector image of the detected metal target on the display.
由于安检设备是多台同时工作， 所以将多台安检设备联网是必须 的， 即要保证单个系统的正常工作， 又要能够联网工作。 Since many security equipments work at the same time, it is necessary to network multiple security equipments, that is, to ensure the normal operation of a single system, and to be able to work online.
图 2是本发明的接收、 发射部分的结构示意图。 由于探测线圈的 尺寸有一定的范围， 被测人员双脚放置的位置与读数有关， 因此本仪 器采用脚印限位方式， 让被测脚的位置保持在一定范围内， 被测脚符 合位置要求才幵始测试， 否则就拒绝测试。 拟采用光电开关、 机械开 关或只用限位凸起等均可起到限位作用。 Figure 2 is a block diagram showing the structure of the receiving and transmitting portions of the present invention. Since the size of the detecting coil has a certain range, the position of the measured person's feet is related to the reading. Therefore, the instrument adopts the footprint limit mode to keep the position of the measured foot within a certain range, and the measured foot meets the position requirement. Start the test, otherwise reject the test. It is proposed to use photoelectric switch, mechanical switch or only limit protrusion to play the limit function.
由于探测头内安装的是两套 （左右脚各一套） 平衡线圈， 向四周 发射电磁场， 附近钢筋等金属物会破坏源电磁场的平衡， 影响测量精 度， 严重时因平衡被破坏而无法工作。 为解决此矛盾经过实验， 采用 单面磁屏蔽方法， 即在距地面一侧采用金属和铁氧体两层隔离的屏蔽 结构， 从而减少近距离钢筋的影响， 探头可置于地板的任何位置均能 正常工作。 Since two sets of balance coils (one set of left and right feet) are installed in the probe head, electromagnetic fields are emitted to the surroundings, and metal objects such as steel bars nearby may damage the balance of the source electromagnetic field, affecting the measurement accuracy, and in serious cases, the balance may be destroyed and cannot work. In order to solve this contradiction, through experiments, the single-sided magnetic shielding method is adopted, that is, a shielding structure with two layers of metal and ferrite isolated from the ground side, thereby reducing the influence of the close-distance steel bars, and the probe can be placed at any position on the floor. Can work normally.
探测线圈可以是按平面叠加的方式， 见图 1 所示。 其中的接收与 发射线圈 4、 2分别缠绕在内线圈骨架 3和外线圈骨架 1 上。 所述接 收与发射线圈 4、 2 位于被测物的下方， 即具有脚印限位装置的脚印 下方。 在接收与发射线圈 4、 2 的下方设有金属和铁氧体两层隔离屏 蔽层。 所述接收与发射线圈还可按垂直方向设置。 按平面设置的一对 接收与发射线圈对应检测鞋底， 按垂直方向的一对或若干对线圈为检
测小腿部所夹带的金属件。 所述发射、 接收线圈的振荡频率可以是The detection coils can be superimposed in a plane, as shown in Figure 1. The receiving and transmitting coils 4, 2 are wound around the inner bobbin 3 and the outer bobbin 1, respectively. The receiving and transmitting coils 4, 2 are located below the object under test, ie under the footprint of the footprint limiting device. A metal and ferrite two-layer isolation shielding layer is disposed under the receiving and transmitting coils 4, 2. The receiving and transmitting coils can also be arranged in a vertical direction. A pair of receiving and transmitting coils arranged in a plane are used to detect the sole, and a pair or a pair of coils in the vertical direction are inspected. Measure the metal parts entrained in the calf. The oscillation frequency of the transmitting and receiving coils may be
6.4K, 为了多台仪器隔离和互不干扰， 在使用上仪器之间需隔开 3m 距离。
6.4K, in order to isolate and not interfere with each other, the distance between the instruments should be separated by 3m.
Claims
1、 一种鞋内安全检测仪， 其特征在于它的电路结构包括： 发射部分， 由设在每只脚底所在平面上的发射线圈和每个发射线 圈两端连接的不同振荡频率产生电路组成； An in-shoe safety detector, characterized in that the circuit structure comprises: a transmitting portion, which is composed of a transmitting coil disposed on a plane of each sole and a different oscillation frequency generating circuit connected at both ends of each transmitting coil;
' 接收部分， 由对应于发射部分的每个发射线圈而设置的接收线圈 组成， 所述接收线圈相邻于对应的发射线圈设置， 其输出端分别接各 自的前置放大器； a receiving portion, which is composed of a receiving coil corresponding to each transmitting coil of the transmitting portion, the receiving coil is disposed adjacent to the corresponding transmitting coil, and the output ends thereof are respectively connected to the respective preamplifiers;
解调器， 该解调器连接在前置放大器输出端与微处理器输入端之 间； a demodulator coupled between the output of the preamplifier and the input of the microprocessor;
微处理器， 按顺序导通取样信号， 并且将取样信号编码后送入计 算机控制单元， 其输入端与调制解调器的输出端相连接， 输出端通过 放大电路和 A/D转换接计算机控制单元； The microprocessor turns on the sampling signal in sequence, and encodes the sampling signal and sends it to the computer control unit. The input end is connected to the output end of the modem, and the output end is connected to the computer control unit through an amplifying circuit and an A/D conversion;
计算机控制单元， 具有处理提取出被检测金属目标的幅一相特性 分析单元， 其输出端通过接口电路接一个显示被检测金属目标的矢量 图的显示器。 The computer control unit has a amplitude-phase characteristic analysis unit for processing the extracted metal target, and an output terminal thereof is connected to the display of the vector map of the detected metal target through the interface circuit.
2、 如权利要求 1 所述的鞋内安全检测仪， 其特征在于： 所述计 算机控制单元的输出端通过接口接一个 LCD显示器。 2. The in-shoe safety tester according to claim 1, wherein: the output end of the computer control unit is connected to an LCD display through an interface.
3、 如权利要求 1 所述的鞋内安全检测仪， 其特征在于： 所述发 射部分安装于一个具有脚印限位的装置上， 所述脚印限位方式包括光 电幵关、 机械幵关或限位凹凸脚形结构。 3. The in-shoe safety tester according to claim 1, wherein: the transmitting portion is mounted on a device having a footprint limit, and the footprint limit manner includes a photoelectric switch, a mechanical switch or a limit. A embossed foot structure.
4、 如权利要求 1 所述的鞋内安全检测仪， 其特征在于： 所述发 射、 接收线圈互相为平行相邻设置或以一定角度相邻设置。 4. The in-shoe safety tester according to claim 1, wherein: the transmitting and receiving coils are disposed adjacent to each other in parallel or adjacently at an angle.
5、 如权利要求 1 所述的鞋内安全检测仪， 其特征在于： 所述发 射部分所在的脚印限位装置的距地面一侧， 采用金属和铁氧体两层隔 离层的屏蔽结构。
The in-shoe safety tester according to claim 1, wherein: the footprint of the footprinting device of the transmitting portion is on the side of the ground, and a shielding structure of two layers of metal and ferrite is used.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610170335.3 | 2006-12-28 | ||
| CNB2006101703353A CN100520383C (en) | 2006-12-28 | 2006-12-28 | In-shoe safety detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008080267A1 true WO2008080267A1 (en) | 2008-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2007/000331 WO2008080267A1 (en) | 2006-12-28 | 2007-01-30 | Cppp a safety detector for the internal of shoes |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100520383C (en) |
| WO (1) | WO2008080267A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196479B (en) * | 2007-10-15 | 2010-12-08 | 深圳市赛时特科技有限公司 | Channel type integrated security check system |
| CN101556253B (en) * | 2008-04-09 | 2011-09-21 | 中国电子科技集团公司第五十研究所 | A detection device and method for hidden metal objects |
Citations (9)
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|---|---|---|---|---|
| EP1411373A2 (en) * | 2002-10-18 | 2004-04-21 | Firma Ing. Klaus Ebinger | Device and method for detecting metal objects |
| US20050073307A1 (en) * | 2003-10-02 | 2005-04-07 | Alessandro Manneschi | Detector of non-authorized materials in a zone having protected access |
| CN2694270Y (en) * | 2004-03-31 | 2005-04-20 | 中国电子科技集团公司第五十研究所 | Hand-held resoluble metal detector circuit |
| CN2695962Y (en) * | 2004-03-12 | 2005-04-27 | 张恩伟 | Safety investigating instrument for shoes special for explosion-proof inspection |
| CN2739677Y (en) * | 2004-10-22 | 2005-11-09 | 南京理工大学 | Wide-vision foot x-ray video imaging safety check device |
| US6970087B2 (en) * | 2002-07-28 | 2005-11-29 | Gil Stis | Device and method of detecting metal objects |
| US7053785B2 (en) * | 2002-12-30 | 2006-05-30 | James Edward Akins | Security prescreening device |
| US7098789B2 (en) * | 2003-10-02 | 2006-08-29 | Alessandro Manneschi | Detector of non-authorized objects in a zone having protected access |
| CN2859520Y (en) * | 2005-12-29 | 2007-01-17 | 中国电子科技集团公司第五十研究所 | In-shoe safety detector that can distinguish copper, iron and aluminum materials |
-
2006
- 2006-12-28 CN CNB2006101703353A patent/CN100520383C/en active Active
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- 2007-01-30 WO PCT/CN2007/000331 patent/WO2008080267A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6970087B2 (en) * | 2002-07-28 | 2005-11-29 | Gil Stis | Device and method of detecting metal objects |
| EP1411373A2 (en) * | 2002-10-18 | 2004-04-21 | Firma Ing. Klaus Ebinger | Device and method for detecting metal objects |
| US7053785B2 (en) * | 2002-12-30 | 2006-05-30 | James Edward Akins | Security prescreening device |
| US20050073307A1 (en) * | 2003-10-02 | 2005-04-07 | Alessandro Manneschi | Detector of non-authorized materials in a zone having protected access |
| US7098789B2 (en) * | 2003-10-02 | 2006-08-29 | Alessandro Manneschi | Detector of non-authorized objects in a zone having protected access |
| CN2695962Y (en) * | 2004-03-12 | 2005-04-27 | 张恩伟 | Safety investigating instrument for shoes special for explosion-proof inspection |
| CN2694270Y (en) * | 2004-03-31 | 2005-04-20 | 中国电子科技集团公司第五十研究所 | Hand-held resoluble metal detector circuit |
| CN2739677Y (en) * | 2004-10-22 | 2005-11-09 | 南京理工大学 | Wide-vision foot x-ray video imaging safety check device |
| CN2859520Y (en) * | 2005-12-29 | 2007-01-17 | 中国电子科技集团公司第五十研究所 | In-shoe safety detector that can distinguish copper, iron and aluminum materials |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1975396A (en) | 2007-06-06 |
| CN100520383C (en) | 2009-07-29 |
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