A method for detecting dangerous liquid

Abstract

The invention discloses a device and method for detecting dangerous liquid. The device comprises a transmitting antenna, a receiving antenna, a transmitting circuit, a sampling circuit, a time base source, a front trigger circuit, a stepping delay pulse generating circuit, a data processing unit and a result outputting unit. The data processing unit is provided with a data storage device. The time base source is respectively connected with the front trigger circuit, the stepping delay pulse generating circuit and the data processing unit. The front trigger circuit is connected with the transmitting circuit. The stepping delay pulse generating circuit is connected with the sampling circuit. The sampling unit is further connected with the data processing unit. The data processing unit is further connected with the result outputting unit. The method comprises the steps of preparation, electromagnetic wave transmitting, electromagnetic wave receiving, sampling, data processing and judging and result outputting. According to the device for detecting the dangerous liquid with the method for detecting the dangerous liquid, the detection speed is high, operation is convenient, and harmful radiation is avoided. The flammable and combustible liquid with the dielectric constant greatly different from that of water can be accurately differentiated, the sulfuric acid with the dielectric constant similar to that of water can also be accurately differentiated, and the detection range is wide.

Description

technical field

[0001] The invention relates to the technical field of dangerous goods detection, in particular to the technical field of police safety detection, and in particular to a dangerous liquid detection device and a detection method adopted therefor. Background technique

[0002] The detection technology of dangerous goods has always been an important technical field related to the security of a country. Especially after the 911 terrorist attack in the United States, all countries have strengthened the security measures of important places, and one of the important measures is the detection of dangerous goods.

[0003] In important places such as airports, railway stations, and subway stations in our country, X-ray machines for detecting dangerous goods can also be often seen. Although X-ray machines are expensive, because of their high penetration, high resolution and sensitivity, they are currently the most used security detection technology in security departme...

Examples

Embodiment Construction

[0037] A dangerous liquid detection device provided in this specific embodiment is as figure 1 As shown, it is used for non-contact non-destructive testing of liquids, including such as figure 2 and image 3 As shown, the transmitting antenna 5 and the receiving antenna 6 respectively placed on both sides of the liquid to be detected, and the transmitting circuit 4 connected to the transmitting antenna 5, and the sampling circuit 7 connected to the receiving antenna 6; the dangerous liquid The detection device also includes: a time base source 1, a pre-trigger circuit 2, a step delay pulse generation circuit 3, a data processing unit 8 and a result output unit 9, and the data processing unit 8 has a data memory; the time base source 1 is respectively connected with the pre-trigger circuit 2, the step delay pulse generating circuit 3 and the data processing unit 8; the pre-trigger circuit 2 is connected with the transmitting circuit 4; the step delay pulse generating circuit ...

technical field

[0001] The invention relates to the technical field of dangerous goods detection, in particular to the technical field of police safety detection, and in particular to a dangerous liquid detection device and a detection method adopted therefor. Background technique

[0002] The detection technology of dangerous goods has always been an important technical field related to the security of a country. Especially after the 911 terrorist attack in the United States, all countries have strengthened the security measures of important places, and one of the important measures is the detection of dangerous goods.

[0003] In important places such as airports, railway stations, and subway stations in our country, X-ray machines for detecting dangerous goods can also be often seen. Although X-ray machines are expensive, because of their high penetration, high resolution and sensitivity, they are currently the most used security detection technology in security departme...

Examples

Embodiment Construction

[0037] A dangerous liquid detection device provided in this specific embodiment is as figure 1 As shown, it is used for non-contact non-destructive testing of liquids, including such as figure 2 and image 3 As shown, the transmitting antenna 5 and the receiving antenna 6 respectively placed on both sides of the liquid to be detected, and the transmitting circuit 4 connected to the transmitting antenna 5, and the sampling circuit 7 connected to the receiving antenna 6; the dangerous liquid The detection device also includes: a time base source 1, a pre-trigger circuit 2, a step delay pulse generation circuit 3, a data processing unit 8 and a result output unit 9, and the data processing unit 8 has a data memory; the time base source 1 is respectively connected with the pre-trigger circuit 2, the step delay pulse generating circuit 3 and the data processing unit 8; the pre-trigger circuit 2 is connected with the transmitting circuit 4; the step delay pulse generating circuit ...

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