CN114624785B - Same light source setting method suitable for novel double-source mixed detection type channel type security inspection system - Google Patents
Same light source setting method suitable for novel double-source mixed detection type channel type security inspection system Download PDFInfo
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- CN114624785B CN114624785B CN202210525505.4A CN202210525505A CN114624785B CN 114624785 B CN114624785 B CN 114624785B CN 202210525505 A CN202210525505 A CN 202210525505A CN 114624785 B CN114624785 B CN 114624785B
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- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
- G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
- G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
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Abstract
The invention relates to a method for setting the same light source suitable for a novel double-source mixed detection type channel type security inspection system, which is characterized in that an X-ray machine is arranged between a back scattering light source and a transmission light source to replace a scattering X-ray machine and a transmission X-ray machine, the energy value of the X-ray machine is adjusted by considering the difference of light source energy required by the back scattering detector and the transmission detector, a ray lens is added on the surface of the transmission detector to improve the energy value received by the transmission detector, a scattering light source filter is added on the surface of the transmission detector to reduce the energy value received by the transmission detector, the purpose of using the same light source for back scattering and transmission is realized, and the problems of interference caused by double light sources, increase of image noise points, incapability of image identification and the like are avoided.
Description
Technical Field
The invention belongs to the technical field of back scattering and transmission detection, and particularly relates to a same light source setting method suitable for a novel double-source mixed detection type channel type security inspection system.
Background
The security inspection machine, also known as a security inspection instrument, comprises a security inspection X-ray machine, a luggage security inspection machine, a channel X-ray machine, an object inspection X-ray machine, an X-ray security inspection instrument, an X-ray luggage security inspection machine, an X-ray detector, an X-ray foreign matter detector, an X-ray security inspection machine, an X-ray luggage detector, a three-class detector and a hazard detector. The security inspection machine is widely applied to airports, railway stations, subway stations, bus stations, government buildings, embassy, conference centers, exhibition centers, hotels, shopping malls, large-scale activities, post offices, schools, logistics industries, industrial detection and the like.
The 'hot eyes' of the safety inspection instrument are realized by X-rays, and the safety inspection instrument is an electronic device which sends the inspected luggage into an X-ray inspection channel by means of a conveyer belt to finish inspection. The luggage enters an X-ray inspection channel, the package detection sensor is blocked, a detection signal is sent to a system control part, an X-ray trigger signal is generated, and an X-ray source is triggered to emit an X-ray beam. A fan-shaped X-ray beam passing through the collimator penetrates through an object to be detected on the conveying belt, the X-ray is absorbed by the object to be detected, and finally, the X-ray bombards the dual-energy semiconductor detector arranged in the channel. The detector converts the X-rays into signals, and these very weak signals are amplified and sent to a signal processing cabinet for further processing.
X-rays are electromagnetic waves that can penetrate opaque objects such as wood, cardboard, leather, etc. The security check instrument can present images with different colors on the screen according to the absorption degree of the object to the X-ray. Briefly, orange represents organic matter, such as food, plastic, etc.; books, ceramics, etc. appear green; the metal appears blue. At this time, the security inspector can quickly check the perspective image of the X-ray scanning, and can judge whether the contraband exists or not by virtue of rich experience.
Two sets of light sources need to be used inside the current novel double-source mixed detection type channel type security inspection system, and the energy of the light sources is different, which can lead to interference to another set of detection system, thus increasing the image noise and failing to perform the image recognition function.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a same light source setting method suitable for a novel double-source mixed detection type channel type security inspection system, can use the same light source to perform back scattering and transmission detection, and avoids the problems of interference caused by double light sources, increase of image noise, incapability of performing image identification and the like.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the same light source setting method suitable for the novel double-source mixed detection type channel type security inspection system comprises the following steps of:
step 1, installing an X-ray machine at a position between a back scattering light source and a transmission light source of a novel double-source mixed detection type channel type security inspection system to replace a back scattering X-ray machine and a transmission X-ray machine;
step 2, calculating the energy value of the X-ray machine according to the installation position and the difference of the energy values of the light source required by back scattering and transmission;
step 3, adjusting the transmission detector according to the requirement of transmission on the energy value of the required light source;
and 4, adjusting the back scattering detector according to the requirement of back scattering on the energy value of the required light source.
Moreover, the specific implementation method of the step 1 is as follows: an X-ray machine is arranged at a position between a backscattering and transmission light source of the novel double-source mixed detection type channel type security inspection system to replace the backscattering X-ray machine and the transmission X-ray machine, and a light source emitted by the installed X-ray machine can be detected by a transmission detector and a backscattering detector.
Moreover, the specific implementation method of step 2 is as follows: backscatter detectors the source energy of the backscatter detectors X-ray machine is set to the central value of the source energy value required for backscatter and transmission.
Moreover, the specific implementation method of step 3 is as follows: and a focusing lens is added on the surface of the transmission detector to improve the energy value received by the transmission detector.
Moreover, the specific implementation method of step 4 is as follows: the back scattering detector adds a scattering light source filter on the surface of the transmission detector to reduce the energy value received by the transmission detector.
The invention has the advantages and positive effects that:
the invention replaces a scattering X-ray machine and a transmission X-ray machine with an X-ray machine between a back scattering light source and a transmission light source, simultaneously considers the difference of light source energy required by the back scattering detector and the transmission detector, adjusts the energy value of the X-ray machine, adds a focusing lens on the surface of the transmission detector, improves the energy value received by the transmission detector, adds a scattering light source filter on the surface of the transmission detector, reduces the energy value received by the transmission detector, achieves the purpose of using the same light source for back scattering and transmission, and avoids the problems of interference caused by double light sources, increase of image noise points, incapability of image identification and the like.
Drawings
FIG. 1 is a block diagram of the present invention.
1-conveyor belt, 2-X-ray machine, 3-transmission detector, 4-back scattering detector, 5-X-ray, 6-focusing lens and 7-scattering light source filter.
Detailed Description
The present invention is further described in detail below with reference to the accompanying drawings.
The same light source setting method suitable for the novel double-source mixed detection type channel type security inspection system, as shown in fig. 1, comprises the following steps:
step 1, an X-ray machine 2 is installed between a back scattering light source and a transmission light source of the novel double-source mixed detection type channel type security inspection system, and the X-ray machine is located below a conveyor belt 1 and replaces a back scattering X-ray machine and a transmission X-ray machine.
The specific implementation method of the step is as follows: two sets of light sources need to be used to present novel two source formula of examining channel formula security check system thoughtlessly, and the energy of light source is different, can lead to disturbing one set of detecting system in addition, makes the image noise point increase, can't carry out the image recognition function. Therefore, in order to reduce the influence, the same X-ray machine is used for carrying out ray emission on the back scattering and transmission security check equipment of the novel double-source mixed-check channel type security check system to replace a back scattering X-ray machine and a transmission X-ray machine.
And 2, calculating the energy value of the X-ray machine according to the installation position and the difference of the energy values of the X-rays 5 required by backscattering and transmission.
The specific implementation method of the step comprises the following steps: the energy value of the light source required by the back scattering detector 4 is low, the energy value of the light source required by the transmission detector 3 is high, and in order to balance the energy values of the light source required by the back scattering detector and the transmission detector, the energy of the light source of the X-ray machine is set to be the central value of the energy values of the light source required by back scattering and transmission.
And 3, adjusting the transmission detector according to the requirement of the transmission on the energy value of the required light source.
The specific implementation method of the step is as follows: because the light source energy value required by the transmission detector is high, and the light source energy of the X-ray machine is set to be the central value of the light source energy values required by back scattering and transmission, the energy value received by the transmission detector is lower, and in order to increase the energy value received by the transmission detector, the focusing lens 6 is additionally arranged on the surface of the transmission detector, so that the energy value received by the transmission detector is increased.
And 4, adjusting the back scattering detector according to the requirement of back scattering on the energy value of the required light source.
The specific implementation method of the step is as follows: because the light source energy value required by the back scattering detector is low, and the light source energy of the X-ray machine is set as the central value of the light source energy value required by back scattering and transmission, the received energy value of the back scattering detector is higher, in order to reduce the received energy value of the transmission detector, the scattering light source filter 7 is added on the surface of the transmission detector, and the received energy value of the transmission detector is reduced.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.
Claims (2)
1. The same light source setting method suitable for the double-source mixed detection type channel type security inspection system is characterized by comprising the following steps of: the method comprises the following steps:
step 1, installing an X-ray machine at a position between a back scattering light source and a transmission light source of a double-source mixed detection type channel type security inspection system to replace the back scattering X-ray machine and the transmission X-ray machine;
step 2, calculating the energy value of the X-ray machine according to the installation position and the difference of the energy values of the light source required by back scattering and transmission; wherein the light source energy of the back scatter detector X-ray machine is set to the central value of the light source energy required for back scattering and transmission
Step 3, adjusting the transmission detector according to the requirement of the transmission on the energy value of the required light source; the surface of the transmission detector is additionally provided with a focusing lens, so that the energy value received by the transmission detector is improved;
and 4, adjusting the backscatter detector according to the requirement of backscatter on the energy value of the required light source, wherein the backscatter detector is additionally provided with a scattered light source filter on the surface of the transmission detector to reduce the energy value received by the backscatter detector.
2. The same light source setting method suitable for the dual-source mixed-inspection type channel type security inspection system according to claim 1, wherein: the specific implementation method of the step 1 comprises the following steps: an X-ray machine is arranged between a back scattering light source and a transmission light source of the double-source mixed detection type channel type security inspection system to replace the back scattering X-ray machine and the transmission X-ray machine, and meanwhile, the light source emitted by the arranged X-ray machine can be detected by a transmission detector and a back scattering detector.
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