CN113759432A - Security inspection system, data collection rate adjustment method and item information detection method - Google Patents
Security inspection system, data collection rate adjustment method and item information detection method Download PDFInfo
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- CN113759432A CN113759432A CN202110819847.2A CN202110819847A CN113759432A CN 113759432 A CN113759432 A CN 113759432A CN 202110819847 A CN202110819847 A CN 202110819847A CN 113759432 A CN113759432 A CN 113759432A
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Abstract
本申请涉及一种安检系统、数据采集速率调节方法和物品信息检测方法，其中，该安检系统包括：第一探测装置、第二探测装置、安检装置以及传送带，第一探测装置，用于探测移动至第一探测位置的待测对象，并生成待测对象的第一探测信号；第二探测装置用于探测移动至第二探测位置的待测对象，并生成待测对象的第二探测信号；安检装置用于根据接受到的第一探测信号和第二探测信号之间的时间间隔，以及第一探测位置与第二探测位置之间的传送距离，确定传送带的实际传送速度。其实现了安检装置对传送带的实际传送速度的主动探测，从而提高了安检装置内部根据实际传送速度调节参数的及时率，进而提高了待测对象在安检装置中扫描成像的准确度。
The present application relates to a security inspection system, a data acquisition rate adjustment method, and an item information detection method, wherein the security inspection system includes: a first detection device, a second detection device, a security inspection device and a conveyor belt, and the first detection device is used to detect movement to the object to be detected at the first detection position, and generate a first detection signal of the object to be detected; the second detection device is used to detect the object to be detected moving to the second detection position, and to generate a second detection signal of the object to be detected; The security inspection device is used to determine the actual transmission speed of the conveyor belt according to the time interval between the received first detection signal and the second detection signal, and the transmission distance between the first detection position and the second detection position. It realizes the active detection of the actual transmission speed of the conveyor belt by the security inspection device, thereby improving the timely rate of adjusting parameters according to the actual transmission speed inside the security inspection device, thereby improving the scanning and imaging accuracy of the object to be detected in the security inspection device.
Description
Technical Field
The application relates to the technical field of security check machines, in particular to a security check system, a data acquisition rate adjusting method and an article information detection method.
Background
In fields such as logistics transportation, subway security check, security check machine by the wide application in article information detection to luggage and parcel, through detecting the inside article information of suitcase, handbag and parcel, judge whether contain forbidden article to improve logistics transportation and the security of trip. The security inspection machine is mainly erected on the conveyor belt and scans and identifies the object to be detected conveyed to the security inspection machine through the conveyor belt so as to acquire the article information in the object to be detected. In the scanning and identifying process, in order to improve the accuracy of article detection, the security inspection machine needs to be matched with the conveying speed of the conveying belt to correspondingly set the acquisition rate for acquiring the energy data of the object to be detected. The transmission speed of the conveyor belt can change due to the requirement of adapting to an actual scene, and the current security check machine mainly determines a fixed acquisition rate by passively receiving the transmission speed of the conveyor belt sent by an external module, cannot actively detect the transmission speed of the conveyor belt, adjusts the acquisition rate according to the changed transmission speed, and accordingly influences the imaging accuracy of an object to be detected.
Aiming at the problem that when the conveying speed is changed due to the fact that the safety inspection machine cannot actively detect the conveying speed of the conveying belt to adjust the acquisition rate, the imaging accuracy of an object to be detected is low, no effective solution is provided at present.
Disclosure of Invention
The present embodiment provides a security inspection system, a data acquisition rate adjustment method, and an article information detection method, so as to solve the problem in the related art that a security inspection machine cannot actively detect the conveying speed of a conveyor belt to adjust the acquisition rate.
In a first aspect, there is provided in this embodiment a security inspection system comprising: first detection device, second detection device, safety inspection device and conveyer belt, wherein:
the first detection device, the second detection device and the security inspection device are all arranged on a conveying line of the conveying belt; the first detection device is used for detecting the object to be detected which moves to a preset first detection position along with the conveyor belt, and generating a first detection signal of the object to be detected according to a detection result;
the second detection device is used for detecting the object to be detected which moves to a preset second detection position along with the conveyor belt, and generating a second detection signal of the object to be detected according to a detection result;
the safety inspection device is in communication connection with the first detection device and the second detection device respectively, and is used for receiving the first detection signal and the second detection signal and determining the actual transmission speed of the conveyor belt according to the time interval between the received first detection signal and the received second detection signal and the transmission distance between the first detection position and the second detection position.
In some of these embodiments, the security device comprises a controller and an image collector; the controller is electrically connected with the image collector;
the image collector is used for collecting image data of the object to be detected which moves to a preset security inspection position along with the conveyor belt;
the controller is used for adjusting the image data acquisition rate of the image acquisition device according to the actual transmission speed of the transmission belt.
In some of these embodiments, the first detection location is upstream of the second detection location;
the second detection position is an entrance position of the security inspection device.
In some of these embodiments, the first detection position is an entrance position of the security device and the second detection position is an exit position of the security device.
In some of these embodiments, the security device further comprises an X-ray emission source; the controller is electrically connected with the X-ray emission source;
the controller is also used for controlling the X-ray emission source to send X-rays to the object to be detected when receiving a signal that the object to be detected reaches the entrance position of the security inspection device;
the image collector is also used for collecting the image data of the object to be detected based on the X ray according to the image data collecting rate.
In some embodiments, the controller is further configured to turn off the X-ray emission source upon receiving a signal that the object to be measured leaves the exit position of the security inspection device.
In some of these embodiments, the first and second detection devices are both infrared probes.
In a second aspect, in this embodiment, there is provided a data acquisition rate adjustment method for the security inspection system of the first aspect, the method includes:
when the first detection device detects that the object to be detected moves to the first detection position along with the conveyor belt, the first detection device sends a first detection signal to the security inspection device;
when the second detection device detects that the object to be detected moves to the second detection position along with the conveyor belt, the second detection device sends a second detection signal to the security inspection device;
and the security inspection device determines the actual transmission speed of a conveyor belt in the security inspection system according to the time interval for receiving the first detection signal and the second detection signal and the transmission distance between the first detection device and the second detection device, and adjusts the image data acquisition rate for acquiring the object to be detected according to the actual transmission speed of the conveyor belt.
In a third aspect, in this embodiment, there is provided an article information detecting method for a security inspection device in the security inspection system according to the first aspect, the method including:
when a signal indicating that the object to be detected reaches the inlet of the security inspection device is received, starting X-rays, and acquiring image data of the object to be detected according to a received image data acquisition rate, wherein the received image data acquisition rate is the image data acquisition rate determined by the data acquisition rate adjusting method according to claim 7;
and identifying the image data by using a preset image identification algorithm to obtain the article information of the object to be detected.
In some embodiments, the acquiring the image data of the object to be measured at the received image data acquisition rate includes:
acquiring energy data of the object to be detected based on X-rays according to the image data acquisition rate;
and converting the energy data into image data of the object to be detected according to a preset conversion method.
The security inspection system, the data acquisition rate adjusting method and the article information detecting method provided in the embodiment include: first detection device, second detection device, safety inspection device and conveyer belt, wherein: the first detection device, the second detection device and the security inspection device are all arranged on the conveying line of the conveying belt; the first detection device is used for detecting the object to be detected which moves to a preset first detection position along with the conveyor belt, and generating a first detection signal of the object to be detected according to a detection result; the second detection device is used for detecting the object to be detected which moves to a preset second detection position along with the conveyor belt, and generating a second detection signal of the object to be detected according to a detection result; the safety inspection device is in communication connection with the first detection device and the second detection device respectively and is used for receiving the first detection signal and the second detection signal and determining the actual transmission speed of the conveyor belt according to the time interval between the received first detection signal and the received second detection signal and the transmission distance between the first detection position and the second detection position. The active detection of the safety inspection device on the actual conveying speed of the conveying belt is realized, so that the timeliness of the safety inspection device for adjusting parameters according to the actual conveying speed is improved, and the accuracy of scanning and imaging of the object to be detected in the safety inspection device is improved.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of the security inspection system of the present embodiment;
FIG. 2 is a flow chart of a data acquisition rate adjustment method according to the present embodiment;
fig. 3 is a flowchart of an article information detection method of the present embodiment;
fig. 4 is a flowchart of the conveyor belt speed determination method of the present embodiment.
Detailed Description
For a clearer understanding of the objects, aspects and advantages of the present application, reference is made to the following description and accompanying drawings.
Unless defined otherwise, technical or scientific terms used herein shall have the same general meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" and "an" and "the" and similar referents in the context of this application do not denote a limitation of quantity, either in the singular or the plural. The terms "comprises," "comprising," "has," "having," and any variations thereof, as referred to in this application, are intended to cover non-exclusive inclusions; for example, a process, method, and system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or modules, but may include other steps or modules (elements) not listed or inherent to such process, method, article, or apparatus. Reference throughout this application to "connected," "coupled," and the like is not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Reference to "a plurality" in this application means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. In general, the character "/" indicates a relationship in which the objects associated before and after are an "or". The terms "first," "second," "third," and the like in this application are used for distinguishing between similar items and not necessarily for describing a particular sequential or chronological order.
The present embodiment provides a security inspection system 10, as shown in the figure, including: first detection device 12, second detection device 14, security check device 16 and conveyer belt 18, wherein:
the first detection device 12, the second detection device 14 and the security inspection device 16 are all arranged on the conveying line of the conveyor belt 18; the first detection device 12 is used for detecting the object to be detected which moves to a preset first detection position along with the conveying belt 18 and generating a first detection signal of the object to be detected according to a detection result;
the second detection device 14 is configured to detect the object to be detected that moves to the preset second detection position along with the conveyor belt 18, and generate a second detection signal of the object to be detected according to a detection result;
the security inspection device 16 is in communication connection with the first detection device 12 and the second detection device 14, respectively, and is configured to receive the first detection signal and the second detection signal, and determine an actual transmission speed of the conveyor belt 18 according to a time interval between the received first detection signal and the received second detection signal and a transmission distance between the first detection position and the second detection position.
The first detecting device 12 and the second detecting device 14 may be infrared probes, or may be ultrasonic probes. When the first detecting device 12 and the second detecting device 14 are infrared probes, the first detecting device 12 and the second detecting device 14 may each include a pair of infrared probes disposed at two sides of the conveyor belt and opposite to each other. The security inspection device 16 is erected on the conveyor belt 18, and is used for performing X-ray scanning on the object to be detected when the object to be detected moves to the interior of the security inspection device 16 along with the conveyor belt, so as to obtain information of the interior of the object to be detected. Wherein, the security inspection device 16 can set the time for collecting the X-ray energy data according to the transmission speed of the conveyor belt. As the conveying speed of the conveyor belt is faster, the number of lines of energy data that the security inspection device 16 needs to collect per unit time is larger. Therefore, when the internal parameters of the security inspection device 16 do not match the conveying speed, the accuracy of the scanning imaging of the object to be measured presented by the security inspection device 16 will be reduced. In particular, the object to be measured may be a package or baggage.
Additionally, the first detection position may be an entrance position of the security check device or other position. The second detection position may be an exit position of security device 16 or other position. Preferably, when the first detection position is the entrance position of the security inspection device 16 and the second detection position is the exit position of the security inspection device 16, the security inspection device 16 may further turn on the X-ray source to scan the object to be detected entering the security inspection device 16, in addition to determining the actual conveying speed of the conveyor belt based on the first detection signal and the second detection signal, when receiving the first detection signal indicating that the object to be detected enters the security inspection device 16, and turn off the X-ray source when receiving the second detection signal indicating that the object to be detected leaves the security inspection device 16, so that the performance of the security inspection device 16 can be prevented from being lost, and the service life of the security inspection device 16 can be prolonged.
It should be clear that the conveying speed of the conveyor belt is constant, and the first detection position and the second detection position may also be any other two positions of the security inspection system, wherein the first detection position may be located upstream of the second detection position, i.e. the object to be detected passes through the first detection position and the second detection position in sequence, so that the first detection signal and the second detection signal are generated by the first detection device 12 and the second detection device 14 in sequence. The security check device 16 has a time difference between the receipt of the first detection signal and the receipt of the second detection signal, and the distance between the first detection position and the second detection position is known, so the security check device 16 can determine the actual conveying speed of the conveyor belt according to the time interval between the receipt of the first detection signal and the second detection signal, and the conveying distance between the first detection position and the second detection position. Additionally, the speed of the conveyor belt 18 may be adjusted depending on the number of packages being transported. For example, at a subway gate, when the passenger flow volume is large and the number of parcels to be detected is large, the conveying speed of the conveyor belt 18 can be increased to avoid crowd gathering and blocking at the subway gate, and when the passenger flow volume is small, the conveying speed of the conveyor belt 18 can be decreased to reduce the energy consumption of the security inspection system. Therefore, the security inspection device 16 needs to calculate the actual conveying speed of the conveyor belt 18 once each time the first detection signal and the second detection signal are received, so as to adjust the relevant parameters, so that the scanning of the object to be detected by the security inspection device 16 is adapted to the actual conveying speed of the conveyor belt, thereby improving the accuracy of scanning and imaging of the object to be detected.
Specifically, the security inspection device 16 can adjust the image data acquisition rate of the object to be detected in the security inspection device 16 according to the actual transmission speed of the conveyor belt, so as to improve the imaging accuracy of the object to be detected. When the security inspection device 16 is located between the first detection position and the second detection position, the security inspection device 16 may adjust the image data acquisition rate of the next object to be detected according to the actual transmission speed of the conveyor belt 18 determined by the first detection signal and the second detection signal received this time. Preferably, the first detection position and the second detection position are both upstream of the security inspection device 16, so as to determine the actual conveying speed of the conveyor belt 18 before the object to be detected enters the security inspection device 16, thereby adjusting the image data acquisition rate of the security inspection device 16, and further improving the accuracy of imaging the object to be detected. When the first detection position and the second detection position are both located at the upstream of the security inspection device 16, the second detection position may be the entrance position of the security inspection device 16, and in addition, a third detection device may be further disposed at the exit position of the security inspection device 16, so as to obtain the signal of the object to be detected entering and exiting the security inspection device 16.
When the object to be detected reaches the first detection position along with the conveyor belt 18, the first detection device 12 detects the object to be detected and generates a first detection signal of the object to be detected according to a detection result. When the object to be detected reaches the second detection position following the conveyor belt 18, the second detection device 14 detects the detection object and generates a second detection signal of the detection object according to the detection result. The security inspection device 16 calculates the actual conveying speed of the conveyor belt according to the time interval between the first detection signal and the second detection signal which are received successively and the conveying distance between the first detection position and the second detection position. Compared with the conveying speed of the conveying belt of the security check machine in the related art, the mode that the security check device 16 determines the speed of the conveying belt 18 through the first detection device 12 and the second detection device 14 in the embodiment can improve the timeliness of the security check device 16 for adjusting internal parameters according to the actual conveying speed, and further improve the accuracy of scanning and imaging of the object to be detected entering the security check device 16.
The security inspection system comprises: first detection device, second detection device, safety inspection device and conveyer belt, wherein: the first detection device, the second detection device and the security inspection device are all arranged on the conveying line of the conveying belt; the first detection device is used for detecting the object to be detected which moves to a preset first detection position along with the conveyor belt, and generating a first detection signal of the object to be detected according to a detection result; the second detection device is used for detecting the object to be detected which moves to a preset second detection position along with the conveyor belt, and generating a second detection signal of the object to be detected according to a detection result; the safety inspection device is in communication connection with the first detection device and the second detection device respectively and is used for receiving the first detection signal and the second detection signal and determining the actual transmission speed of the conveyor belt according to the time interval between the received first detection signal and the received second detection signal and the transmission distance between the first detection position and the second detection position. The active detection of the safety inspection device on the actual conveying speed of the conveying belt is realized, so that the timeliness of the safety inspection device for adjusting parameters according to the actual conveying speed is improved, and the accuracy of scanning and imaging of the object to be detected in the safety inspection device is improved.
Additionally, in one embodiment, security device 16 includes a controller and an image collector; the controller is electrically connected with the image collector; the image collector is used for collecting image data of the object to be detected which moves to a preset security inspection position along with the conveyor belt; the controller is used for adjusting the image data acquisition rate of the image acquisition device according to the actual transmission speed of the transmission belt.
The image data of the object to be detected collected by the image collector may include internal information of the object to be detected, such as information of internal articles of a package. Specifically, the image collector may be a detection plate, and the detection plate may be configured to collect X-ray-based energy data of the object to be detected according to an image data collection rate. Additionally, the detection panel may be coupled to a processor in the security device 16 to convert the acquired energy data into corresponding image data. The image data acquisition rate may be determined by the processor calculating an actual conveying speed of the conveyor belt according to a time interval between receiving the first detection signal and the second detection signal and a conveying distance between the first detection position and the second detection position.
Additionally, in one embodiment, the first probe location is upstream of the second probe location; the second detection position is an entrance position of the security check device 16.
When the second detection position is the entrance position of the security inspection device 16, and the object to be detected reaches the second detection position, the security inspection device 16 may receive the first detection signal, determine that the object to be detected is about to enter the security inspection device 16, and may turn on the X-ray to scan the object to be detected. Further, the security inspection device 16 may determine the actual transmission speed of the conveyor belt when transmitting the object to be detected before acquiring the image data of the object to be detected, so as to adjust the internal parameters in time, thereby improving the accuracy of acquiring the image data of the object to be detected.
In one embodiment, the first sensing position is an entrance position of security check device 16 and the second sensing position is an exit position of security check device 16. Under the condition that the first detection position is the inlet position of the safety inspection device 16 and the second detection position is the outlet position of the safety inspection device 16, the safety inspection device 16 can calculate the actual conveying speed of the conveyor belt according to the first detection signal and the second detection signal, simultaneously can turn on the X-ray according to the first detection signal and turn off the X-ray according to the second detection signal. Therefore, other detection devices are not required to be additionally arranged to position the position relation between the object to be detected and the security inspection device 16, the cost of the security inspection system 10 is reduced, and the loss of the performance of the security inspection device 16 is reduced.
Additionally, in one embodiment, security device 16 further includes an X-ray emission source; the controller is electrically connected with the X-ray emission source; the controller is also used for controlling the X-ray emission source to send X-rays to the object to be detected when receiving a signal that the object to be detected reaches the inlet position of the security inspection device 16; the image collector is also used for collecting the X-ray-based image data of the object to be detected according to the image data collection rate.
Further, in one embodiment, the controller is further configured to turn off the X-ray emission source upon receiving a signal that the object to be measured leaves the exit position of the security inspection device 16.
In one embodiment, the first detection device 12 and the second detection device 14 are both infrared probes. Wherein, selecting the infrared probe as the first detection device 12 and the second detection device 14 can improve the accuracy and stability of detecting the object to be detected.
According to the security inspection system, the security inspection device comprises the controller and the image collector, and the controller is used for adjusting the image data acquisition rate of the image collector according to the actual transmission speed of the conveyor belt, so that the accuracy of the image collector for acquiring the image data of the object to be detected is improved; the entrance position of the security inspection device is set as the second detection position, and the first detection position is set as the upstream of the second detection position, so that the actual conveying speed of the conveyor belt can be determined before the object to be detected enters the security inspection device, and the timeliness of the security inspection device for adjusting the image data acquisition rate according to the actual conveying speed is improved; the inlet position of the security inspection device is set as the first detection position, and the outlet position is set as the second detection position, so that the security inspection device can determine the actual conveying speed of the conveyor belt based on the first detection signal and the second detection signal and timely control the X-ray source to be turned on or off, the energy consumption of the security inspection device is reduced, and the service life of the security inspection device is prolonged; the safety inspection device can actively calculate the actual conveying speed of the conveying belt, and can adjust the internal parameters according to the actual conveying speed, so that the accuracy of scanning and imaging of the object to be detected in the safety inspection device is improved.
Fig. 2 is a flowchart of a data acquisition rate adjustment method provided in this embodiment, wherein the data acquisition rate adjustment method can be used in the security inspection system 10 of the above embodiment. As shown in fig. 2, the process includes the following steps:
in step S210, when detecting that the object to be detected moves to the first detection position along with the conveyor belt 18, the first detection device 12 sends a first detection signal to the security inspection device 16.
In step S220, the second detection device 14 sends a second detection signal to the security inspection device 16 when detecting that the object to be detected moves to the second detection position along with the conveyor belt 18.
In step S230, the security inspection device 16 determines an actual transmission speed of the conveyor belt 18 in the security inspection system according to the time interval between the first detection signal and the second detection signal and the transmission distance between the first detection device 12 and the second detection device 14, and adjusts an image data acquisition rate for acquiring the object to be detected according to the actual transmission speed of the conveyor belt 18.
Step S210 to step S230, when detecting that the object to be detected moves to a first detection position along with the conveyor belt, the first detection device sends a first detection signal to the security inspection device; when the second detection device detects that the object to be detected moves to a second detection position along with the conveyor belt, a second detection signal is sent to the security inspection device; the security inspection device determines the actual transmission speed of a conveyor belt in the security inspection system according to the time interval for receiving the first detection signal and the second detection signal and the transmission distance between the first detection device and the second detection device, and adjusts the image data acquisition rate for acquiring the object to be detected according to the actual transmission speed of the conveyor belt. The active detection of the safety inspection device on the actual transmission speed of the transmission belt is realized, so that the imaging accuracy of the object to be detected in the safety inspection device is improved.
In an embodiment, an article information detection method is provided, and is used for the security inspection device 16 in the security inspection system 10 of the above embodiment, as shown in fig. 3, specifically including the following steps:
step S310, when receiving a signal indicating that the object to be detected reaches the entrance of the security inspection apparatus, turning on an X-ray, and acquiring image data of the object to be detected according to the received image data acquisition rate, wherein the received image data acquisition rate is the image data acquisition rate determined by the data acquisition rate adjustment method according to claim 7.
When the first detection position is the entrance position of the security inspection device 16, the signal indicating that the object to be detected reaches the entrance of the security inspection device 16 may be the first detection signal. When the second detection position is the entrance position of the security inspection device 16, the signal indicating that the object to be measured reaches the entrance of the security inspection device 16 may be the second detection signal. When the first detection position and the second detection position are not both the entrance positions, other detection devices may be additionally provided at the entrance positions of the security inspection device 16 to detect the object to be detected entering the security inspection device 16. Similarly, a detection device may be disposed at an exit position of the security inspection device 16 to prompt the object to be measured to leave the security inspection device 16.
And S320, recognizing the image data by using a preset image recognition algorithm to obtain the article information of the object to be detected.
And identifying the image data through a preset image identification algorithm so as to obtain the internal article information contained in the object to be detected and marking the article type.
In the above steps S310 to S320, when a signal indicating that the object to be detected reaches the entrance of the security inspection apparatus is received, starting X-ray, and acquiring image data of the object to be detected according to the received image data acquisition rate, wherein the received image data acquisition rate is the image data acquisition rate determined by the data acquisition rate adjustment method according to claim 7; and recognizing the image data by using a preset image recognition algorithm to obtain the article information of the object to be detected. The image acquisition rate is adjusted based on the actual conveying speed of the conveying belt, so that the accuracy of scanning and imaging of the object to be detected is improved.
Further, in an embodiment, based on the step S310, the method for acquiring the image data of the object to be measured according to the received image data acquisition rate specifically includes the following steps:
and step S311, acquiring energy data of the object to be detected based on the X-ray according to the image data acquisition rate.
Step S312, converting the energy data into image data of the object to be measured according to a preset conversion method.
Additionally, in one embodiment, a conveyor belt speed determination method is provided, as shown in fig. 4, comprising the steps of:
s410, detecting the package by a first infrared probe at the entrance of the security inspection device;
step S420, starting X-rays of a security inspection device;
step S430, acquiring energy data of the package through a detection plate of a security inspection device;
step S440, converting the energy data into image data of the package through a server of the security inspection device;
s450, sending the parcel image data to an intelligent module of a security inspection device for identification processing;
step S460, displaying the recognition result of step S450 on a display;
step S470, after detecting the package through a second infrared probe positioned at the outlet of the security inspection device, closing the X-ray;
step S480, calculating the running speed of the conveyor belt according to the time for receiving the signals of the first infrared probe and the second infrared probe and the distance between the first infrared probe and the second infrared probe;
step S490, judge whether the running speed of the conveyer belt changes, if yes, carry out step S500, otherwise carry out step S410;
and S500, reconfiguring the acquisition parameters of the security inspection device according to the running speed of the conveyor belt, and executing the step S410.
It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to be limiting. All other embodiments, which can be derived by a person skilled in the art from the examples provided herein without any inventive step, shall fall within the scope of protection of the present application.
It is obvious that the drawings are only examples or embodiments of the present application, and it is obvious to those skilled in the art that the present application can be applied to other similar cases according to the drawings without creative efforts. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
The term "embodiment" is used herein to mean that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly or implicitly understood by one of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the patent protection. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (10)
1. A security inspection system, comprising: first detection device, second detection device, safety inspection device and conveyer belt, wherein:
the first detection device, the second detection device and the security inspection device are all arranged on a conveying line of the conveying belt; the first detection device is used for detecting the object to be detected which moves to a preset first detection position along with the conveyor belt, and generating a first detection signal of the object to be detected according to a detection result;
the second detection device is used for detecting the object to be detected which moves to a preset second detection position along with the conveyor belt, and generating a second detection signal of the object to be detected according to a detection result;
the safety inspection device is in communication connection with the first detection device and the second detection device respectively, and is used for receiving the first detection signal and the second detection signal and determining the actual transmission speed of the conveyor belt according to the time interval between the received first detection signal and the received second detection signal and the transmission distance between the first detection position and the second detection position.
2. The security system of claim 1, wherein the security device comprises a controller and an image collector; the controller is electrically connected with the image collector;
the image collector is used for collecting image data of the object to be detected which moves to a preset security inspection position along with the conveyor belt;
the controller is used for adjusting the image data acquisition rate of the image acquisition device according to the actual transmission speed of the transmission belt.
3. A security system according to claim 1 or claim 2, wherein the first detection position is upstream of the second detection position;
the second detection position is an entrance position of the security inspection device.
4. A security system according to claim 1 or 2, wherein the first detection position is an entrance position of the security device and the second detection position is an exit position of the security device.
5. The security system of claim 2, wherein said security device further comprises an X-ray emission source; the controller is electrically connected with the X-ray emission source;
the controller is also used for controlling the X-ray emission source to send X-rays to the object to be detected when receiving a signal that the object to be detected reaches the entrance position of the security inspection device;
the image collector is also used for collecting the image data of the object to be detected based on the X ray according to the image data collecting rate.
6. The security inspection system of claim 5, wherein the controller is further configured to turn off the X-ray emitting source upon receiving a signal that the object to be inspected leaves the exit location of the security inspection device.
7. The security system of claim 1, wherein the first detection device and the second detection device are both infrared probes.
8. A data acquisition rate adjustment method for use in the security inspection system of any one of claims 1 to 7, the method comprising:
when the first detection device detects that the object to be detected moves to the first detection position along with the conveyor belt, the first detection device sends a first detection signal to the security inspection device;
when the second detection device detects that the object to be detected moves to the second detection position along with the conveyor belt, the second detection device sends a second detection signal to the security inspection device;
and the security inspection device determines the actual transmission speed of a conveyor belt in the security inspection system according to the time interval for receiving the first detection signal and the second detection signal and the transmission distance between the first detection device and the second detection device, and adjusts the image data acquisition rate for acquiring the object to be detected according to the actual transmission speed of the conveyor belt.
9. An article information detection method used for a security inspection device in the security inspection system according to any one of claims 1 to 7, the method comprising:
when a signal indicating that the object to be detected reaches the inlet of the security inspection device is received, starting X-rays, and acquiring image data of the object to be detected according to a received image data acquisition rate, wherein the received image data acquisition rate is the image data acquisition rate determined by the data acquisition rate adjusting method according to claim 8;
and identifying the image data by using a preset image identification algorithm to obtain the article information of the object to be detected.
10. The item information detection method according to claim 9, wherein the acquiring image data of the object to be measured at the received image data acquisition rate includes:
acquiring energy data of the object to be detected based on X-rays according to the image data acquisition rate;
and converting the energy data into image data of the object to be detected according to a preset conversion method.
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