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Detector for detecting metal dangerous materials

A dangerous goods and detector technology, applied in the field of dangerous goods detectors, can solve the problems of complex circuit structure, bulky volume, high production cost, etc., and achieve the effect of simple circuit structure, high sensitivity and small volume

Inactive Publication Date: 2015-05-20
SFX INFO INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The detectors used in the detection of dangerous metals in the prior art have complex circuit structures, many components, bulky volume, high production cost and are not easy to manufacture, and the detectors for detecting dangerous metals have low sensitivity. Dangerous goods are not easy to detect

Method used

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  • Detector for detecting metal dangerous materials

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with accompanying drawing:

[0011] Such as figure 1 Shown: including DC power supply E, switch K, speaker BL, high frequency transformer T, Zener diode DW, first diode VD1, second diode VD2, first potentiometer RP1, second potentiometer RP2, The first transistor VT1, the second transistor VT2, the third transistor VT3, the fourth transistor VT4, the fifth transistor VT5, the first capacitor C1, the second capacitor C2, the third capacitor C3, The fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5, the sixth resistor R6, The seventh resistor R7, the eighth resistor R8, the ninth resistor R9, the tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, the thirteenth resistor R13, the fourteenth resistor R14 and the fifteenth res...

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Abstract

The invention discloses a detector for detecting metal dangerous materials, which comprises a DC power supply, a switch, a loudspeaker, a high-frequency transformer, a zener diode, a first diode, a second diode, a first potentiometer, a second potentiometer, a first triode to a fifth triode, a first capacitor to a seventh capacitor, and a first resistor to a fifteenth resistor. When the primary coil of the transformer approaches a metal object, eddy current is generated in the metal conductor, energy loss in an oscillating circuit is increased, positive feedback is weakened, oscillation of an oscillator in a critical state is weakened, the lowest energy needed for oscillation can not even be kept to enable oscillation of the oscillator to stop, the change is detected via the circuit, the change is converted into a sound signal, and according to existence of the sound, whether the metal object is below the coil can be judged and detected. The detector for detecting metal dangerous materials has the advantages that the structure is simple, adopted elements are few, the size is small, the cost is low, manufacturing is easy, sensitivity is extremely high, and small metal dangerous materials and covered metal dangerous materials can be easily detected.

Description

technical field [0001] The invention relates to a detector for dangerous goods, in particular to a detector for detecting metal dangerous goods. Background technique [0002] A metal detector is an instrument specially used to detect metal. In addition to detecting mines with metal casings or metal parts, it can also be used to detect wires hidden in walls, water pipes and cables buried in the ground, and even Able to explore underground and find metal objects buried in the ground. Metal detectors can also be used as detectors of dangerous metals to detect dangerous metals that are dangerous or harmful to people. [0003] The detectors used in the detection of dangerous metals in the prior art have complex circuit structures, many components, bulky volume, high production cost and are not easy to manufacture, and the detectors for detecting dangerous metals have low sensitivity. Dangerous goods are not easy to detect. Contents of the invention [0004] The object of the...

Claims

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Application Information

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IPC IPC(8): G01V3/11
Inventor 肖峰
Owner SFX INFO INT
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