CN112082654B - Infrared thermal image temperature measurement system and method - Google Patents
Infrared thermal image temperature measurement system and method Download PDFInfo
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- CN112082654B CN112082654B CN202010792439.8A CN202010792439A CN112082654B CN 112082654 B CN112082654 B CN 112082654B CN 202010792439 A CN202010792439 A CN 202010792439A CN 112082654 B CN112082654 B CN 112082654B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
- G01J5/0025—Living bodies
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
- E01F13/04—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
- G06V40/166—Detection; Localisation; Normalisation using acquisition arrangements
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- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
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- G—PHYSICS
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
Abstract
The invention discloses an infrared thermal image temperature measurement system. The fixed temperature measurement module comprises a first stop and a second stop, and the movable temperature measurement module comprises a third stop; the first gear door is arranged at the inlet of a normal channel of the temperature measuring area, the second gear door is arranged at the inlet of an abnormal channel of the temperature measuring area, and the third gear door is arranged at the outlet of the abnormal channel; the fixed thermal imager controls the first stop and the second stop through the measured body temperature of the passenger; the mobile temperature measurement module is arranged on one side of the abnormal channel and comprises a plurality of mobile thermal imagers and a plurality of sliding rods; the movable thermal imager moves on the sliding rod to follow the passenger and repeatedly measure the body temperature of the passenger, and the third gear is controlled through the body temperature of the passenger; the identity identification module comprises an identity card scanning device; passenger ID card information, passenger's body temperature all transmit to the workstation computer and save data through RS 485. The invention also discloses an infrared thermal image temperature measurement method. The invention can avoid the jam of the temperature measuring area personnel, is suitable for the crowd with wide height and lightens the working pressure of the temperature measuring staff.
Description
Technical Field
The invention belongs to the technical field of temperature measurement control, and particularly relates to an infrared thermal image temperature measurement system and method.
Background
Areas with large personnel flow volume, such as airports, railway stations and the like, are high-incidence areas infected by viruses and bacteria, so that the airports and the railway stations are also key places for measuring temperature and recording personnel flow information. In the prior art, a temperature measurement registration method for the passengers who come and go is to arrange temperature measurement areas at the station entrance of an airport and a railway station, and the passengers queue to enter the temperature measurement areas for temperature measurement and registration. The temperature measuring area is usually registered by workers, and the temperature of the temperature measuring area is measured manually by the workers; or a thermal imager is arranged, thermal imaging temperature measurement is carried out by the thermal imager, thermal imaging images of queued passengers are displayed on a display screen, and the thermal imaging images are observed on the display screen by workers. In the temperature measurement registration method and the adopted equipment in the prior art, once the abnormal body temperature of a certain passenger is detected, the temperature measurement is carried out manually by staff to judge whether the passenger actually has fever, so that the temperature measurement area is easy to be blocked, and the trouble of waiting is brought to the passenger who queues up behind for time. For workers, the workload of registering and measuring the temperature is large, and a display screen of the thermal imager is easy to fatigue when the thermal imager is observed at any time.
In the prior patent, for example, patent publication No. CN107049253A, an infrared thermal imaging body temperature detection method and device based on artificial intelligence are provided, so as to improve the accuracy and efficiency of body temperature detection. The method comprises the following steps: the method comprises the steps that images are collected through a camera arranged on a cloud deck, and a detection target and a human body naked part of the detection target are identified; responding to the short-wave infrared ray of the naked part of the human body and the short-wave infrared ray of the environment where the detection target is located, and detecting the body surface temperature of the detection target and the environment temperature of the environment where the detection target is located; substituting the body surface temperature of the detection target and the environment temperature of the environment where the detection target is located into an algorithm formula to obtain the human body core temperature of the detection target; and sending the human body core temperature of the detection target to a medical care server. The prior patent technology also fails to solve the problem of congestion of passengers queuing behind when abnormal body temperature occurs in the temperature measuring area; when abnormal body temperature occurs to passengers, timely isolation is not achieved, and the pretreatment on a worker is still needed.
Disclosure of Invention
The invention aims to solve the problems and provides an infrared thermal image temperature measuring system which can avoid people in a temperature measuring area from being jammed, is suitable for people with wide body height and reduces the working pressure of temperature measuring workers.
The invention is realized by the following technical scheme: the invention provides an infrared thermal image temperature measurement system, which comprises an identity identification module, a fixed temperature measurement module and a movable temperature measurement module; the fixed temperature measurement module and the identity recognition module are arranged at the entrance of the temperature measurement area; the fixed temperature measurement module comprises a first stop arranged at an inlet of a normal channel of the temperature measurement area and a second stop arranged at an inlet of an abnormal channel of the temperature measurement area, and the movable temperature measurement module comprises a third stop arranged at an outlet of the abnormal channel; the fixed temperature measuring module comprises a fixed thermal imager, and the fixed thermal imager controls the opening and closing states of the first shutter and the second shutter according to the measured temperature of the passenger; the mobile temperature measurement module is arranged on one side of the abnormal channel; the mobile temperature measuring module comprises a plurality of mobile thermal imagers and a plurality of sliding rods; when the passenger walks on the abnormal passage, the mobile thermal imager moves on the sliding rod to follow the passenger and repeatedly measure the body temperature of the passenger; the mobile thermal imager controls the opening and closing state of the third shutter according to the measured temperature condition of the passenger, and sends information of the passenger with abnormal temperature to the workbench computer; the identity identification module comprises an identity card scanning device, passenger identity card information acquired by the identity card scanning device, the passenger body temperature measured by the fixed thermal imager and the passenger body temperature measured by the mobile thermal imager are transmitted to the workbench computer through RS485, and data are stored by the workbench computer.
Optionally, the fixed thermal imager comprises a fixed thermal image camera, a fixed thermal image processor and a fixed thermal image display screen, wherein the fixed thermal image camera is electrically connected with the fixed thermal image processor; the first gear and the second gear are both electrically connected with the fixed heat processor and are directly controlled by the fixed heat processor; the fixed thermal image processor is used for controlling the fixed thermal imager to work and sending a control signal to the movable thermal image processor; the fixed thermal image camera acquires a visible light image and an infrared image; the fixed thermal image display screen displays an infrared thermal image and the body temperature of the passenger.
Optionally, the mobile thermal imager comprises a mobile thermal image camera, a mobile thermal image processor and a mobile thermal image display screen, wherein the mobile thermal image camera, the mobile thermal image processor and the mobile thermal image display screen are electrically connected with the mobile thermal image processor; the third gear door comprises a signal receiver and a third processor, and when the third processor receives a third gear door control signal sent by the mobile heat processor through RS485, the third processor controls the third gear door to be closed; the mobile thermal image processor receives the control signal and controls the mobile thermal imager to work; the mobile thermal image camera acquires a visible light image and an infrared image; the mobile thermal image display screen displays an infrared thermal image and the body temperature of the passenger; the fixed heat processor and the movable heat processor carry out information interaction through the RS 485.
Optionally, the mobile temperature measurement module further comprises a mobile infrared emitter, a mobile infrared receiver and a mobile positioning light emitter, which are electrically connected to the mobile heat processor; the mobile thermal imaging camera, the mobile infrared transmitter, the mobile infrared receiver and the mobile positioning light emitter are all fixedly connected with a first rotating shaft piece and are rotationally connected with the mobile thermal imager through the first rotating shaft piece; the mobile thermal imagery camera, the mobile infrared transmitter, the mobile infrared receiver and the mobile positioning light emitter face the direction of a person in an abnormal channel; the fixed temperature measurement module also comprises a fixed infrared transmitter, a fixed infrared receiver and a fixed positioning light transmitter which are electrically connected with the fixed heat processor; the voice broadcasting device is electrically connected with the fixed heat processor; the fixed thermal imaging camera, the fixed infrared emitter, the fixed infrared receiver and the fixed positioning light emitter are all fixedly connected with a second rotating shaft piece and are rotationally connected with the fixed thermal imager through the second rotating shaft piece; the voice broadcasting device is electrically connected with the fixed heat processor; the fixed thermal imagery camera, the fixed infrared emitter, the fixed infrared receiver, and the fixed positioning light emitter all face a passenger handling direction; the visible light range emitted by the movable positioning light emitter and the fixed positioning light emitter is 500nm to 560 nm;
optionally, the sliding rod comprises a measuring rod for moving to measure temperature and a recovery rod for recovering the thermal imager, and the measuring rod and the recovery rod are parallel and connected end to form a ring; the mobile thermal imager is connected with the sliding rod in a rolling mode through a roller device.
The invention also provides an infrared thermal image temperature measurement method, which is applied to the infrared thermal image temperature measurement system and comprises the following steps:
step S1: the identity card scanning device scans the identity card of the passenger and transmits the identity information of the passenger to the computer on the workbench;
step S2: the fixed thermal imagery camera collects infrared images and visible light images, and transmits the infrared images and the visible light images to the fixed thermal processor for processing;
step S3: the fixed heat processor processes the visible light image;
step S4: the fixed heat processor processes the infrared image and measures the body temperature of the forehead area of the passenger;
when the body temperature of the forehead area of the passenger is within a healthy body temperature range, the fixed heat processor controls the first shutter to be opened;
when the temperature of the forehead area of the passenger is not within the healthy body temperature range, the process proceeds to step S5.
Step S5: the fixed thermal imager measures height information of the forehead of a passenger, selects a mobile thermal imager with proper height, and sends a control signal to the mobile thermal imager;
step S6: the mobile thermal image processor of the mobile thermal imager with the proper height receives the control signal and drives the mobile thermal image camera of the mobile thermal imager with the proper height to acquire an infrared image and a visible light image;
step S7: the movable heat processor processes the visible light image and sends a feedback signal to the fixed heat processor after the preparation work is finished;
step S8: after the fixed heat processor receives the feedback signal, the fixed heat processor controls the second shutter to be opened;
step S9: the mobile thermal imager moves on the sliding rod in accordance with the traveling speed of the passenger;
step S10: the mobile heat processor processes the infrared images, measures the body temperatures of the forehead areas of a plurality of groups of passengers, and calculates an average value;
when the mean value is within the healthy body temperature range, the abnormal channel outlet is kept unblocked;
and when the average value is not in the healthy body temperature range, the third gear at the outlet of the abnormal channel is closed, and the workbench server receives the body temperature abnormal information of the passenger and prompts the staff.
Optionally, the step S3 further includes the following sub-steps:
step S31: the fixed heat processor detects the face position of the passenger and the position of the key point by using an mtcnn method for the acquired visible light image;
step S32: the fixed thermal image processor judges whether the face faces the fixed thermal image camera or not according to the positions of the key points;
when the judgment result is negative, the voice broadcaster sends out a voice prompt;
if the determination result is yes, the process proceeds to step S33;
step S33: the fixed heat processor judges the size of the face of the passenger according to the position of the key point and selects the largest face;
step S34: the fixed heat processor judges the forehead area of the human face according to the position of the key point of the maximum human face;
optionally, the step S5 further includes the following sub-steps:
step S51: the fixed thermal image camera rotates around the second rotating shaft piece, so that fixed positioning light emitted by the fixed positioning light emitter is aligned to the forehead area of a passenger;
step S52: infrared rays emitted by the fixed infrared emitter are reflected by the forehead area of the passenger and then are received by the fixed infrared receiver; the fixed thermal image processor calculates a first linear distance between the fixed thermal image camera and the forehead area of the passenger according to the transmitted and received infrared information;
step S53: the fixed thermal image processor calculates the height of the forehead of the passenger according to the first linear distance, the rotating angle of the fixed thermal image camera and the height of the fixed thermal image camera;
optionally, the step S7 further includes the following sub-steps:
step S71: the mobile heat processor detects the positions of the faces and the positions of key points of the passengers by using an mtcnn method for the acquired visible light images;
step S72: the mobile heat processor judges the size of the face of the passenger according to the position of the face and the position of the key point, and selects the largest face; after the mobile thermal image processor finishes selecting the largest face, a feedback signal is sent to the fixed thermal image processor;
optionally, the step S9 further includes the following sub-steps:
step S91: the mobile thermal imaging camera rotates around the first rotating shaft piece, so that the mobile positioning light emitted by the mobile positioning light emitter is aligned to the forehead area of a passenger;
step S92: infrared rays emitted by the mobile infrared emitter are reflected by the forehead area of the passenger and then are received by the mobile infrared receiver; the mobile thermal image processor calculates a second linear distance between the mobile thermal image camera and the forehead area of the passenger according to the transmitted and received infrared information;
step S93: the moving heat processor controls the moving speed of the roller device to ensure that the second linear distance is unchanged; the second linear distance is less than the first linear distance.
The invention has the beneficial effects that:
1. according to the invention, through the forms of self-brushing of the identity card by the passenger and automatic temperature measurement of the fixed thermal imager, the working pressure of the staff can be reduced in public places with large passenger flow, such as airports, stations and the like, and the automation of recording the flow information of the staff and the automation of temperature measurement of the staff are realized.
2. According to the invention, when the fixed thermal imager detects abnormal body temperature, the passenger with abnormal body temperature and the passenger with normal body temperature can be separated at the first time, so that panic is avoided; the invention also enables the abnormal temperature passenger to enter the abnormal passage in time instead of being pre-processed by the staff, thereby avoiding the problems of overlong queue and staff blockage and avoiding the condition of congestion at the entrance of the temperature measuring area. When the temperature detected by the thermal imager is abnormal due to reasons such as rain, air blowing or hot drink of passengers who should have normal body temperature originally, the passengers with the false abnormal body temperature can obtain a plurality of times of body temperature detection in the process of walking in an abnormal channel, and finally obtain a relatively accurate result, so that the passengers can be prevented from being blocked at the entrance of a temperature measuring area to cause personnel jam.
3. The movable thermal imager is arranged in the abnormal passage, can move along with the walking of the passengers, and automatically accelerates or decelerates to keep a certain distance from the passengers. The design can carry out temperature measurement on passengers for many times under the condition of not influencing the walking of the passengers in the process of walking in the abnormal passage of the passengers, and the average value of the results of the temperature measurement for many times is calculated, so that the accuracy of the temperature measurement result is improved.
4. The mobile thermal imager of this embodiment is provided with a plurality of, and at the co-altitude, judges and selects the mobile thermal imager of suitable height by the testing result of fixed thermal imager, opens the second shelves door after the selection is accomplished and lets the passenger get into, can guarantee no matter what kind of height the passenger, can both obtain the following detection of the mobile thermal imager of appropriate height at the walking of unusual passageway, is suitable for the object extensively promptly.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic structural diagram of a fixed thermal imager, a first shutter and a second shutter according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a stationary thermal imager in accordance with an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a mobile thermal imager according to an embodiment of the invention;
FIG. 4 is a schematic view of a connection structure of a mobile thermal imager and a sliding rod according to an embodiment of the invention;
FIG. 5 is a schematic diagram of a position structure of each device and area of an infrared thermographic temperature measurement system in practical application according to an embodiment of the present invention;
FIG. 6 is a schematic view of a plurality of slide bars according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating connection control relationships between a fixed thermal imager and a mobile thermal imager and each component according to an embodiment of the invention;
FIG. 8 is a flowchart illustrating a process from step S1 to step S10 according to an embodiment of the present invention;
FIG. 9 is a flow diagram illustrating substeps of step 3 of an embodiment of the present invention;
FIG. 10 is a flow diagram illustrating substeps of two step 5 according to an embodiment of the present invention;
FIG. 11 is a flow diagram illustrating substeps of two step 7 according to an embodiment of the present invention;
FIG. 12 is a flow diagram illustrating substeps of two steps 9 of an embodiment of the present invention;
100-fixed thermal imager; 101-a first shutter; 102-a second shutter; 110-a second shaft member; 120-fixing the thermal imaging camera; 131-a fixed infrared emitter; 132-a stationary infrared receiver; 140-fixed positioning light emitters; 150-fixing the thermal image display screen; 160-voice announcer;
200-moving the thermal imager; 210-a first shaft member; 220-moving the thermal imagery camera; 231-mobile infrared emitters; 232-mobile infrared receiver; 240-moving the positioning light emitter; 250-moving the thermal image display screen; 260-a roller device;
300-an identification card scanning device; 400-a slide bar; 410-measuring rod; 420-a recovery rod; 500-normal channel; 600-exception channel; 700-third gear gate; 800-desk computer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "plurality" or "a number" means two or more unless specifically limited otherwise.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.
The first embodiment is as follows:
the embodiment discloses an infrared thermal image temperature measurement system which comprises an identity identification module, a fixed temperature measurement module and a movable temperature measurement module. As shown in fig. 5, the fixed temperature measuring module and the identity recognition module are disposed at the entrance of the temperature measuring area. The fixed temperature measurement module and the identity recognition module are both arranged at the entrance of the temperature measurement area. The fixed temperature measurement module comprises a first shutter 101 and a second shutter 102, and the movable temperature measurement module comprises a third shutter 700. The temperature measurement area includes a normal channel 500 and an abnormal channel 600. The first shutter 101 is disposed at the inlet of the normal channel 500, the second shutter 102 is disposed at the inlet of the abnormal channel 600, and the third shutter 700 is disposed at the outlet of the abnormal channel 600. The fixed temperature measurement module comprises a fixed thermal imager 100, and when the fixed thermal imager 100 measures that the body temperature of a passenger is normal, a first door 101 is opened; when the fixed thermal imager 100 detects that the body temperature of the passenger is abnormal, the second shutter 102 is opened. The movable temperature measuring module is arranged on one side of the abnormal channel 600. The mobile temperature measuring module comprises a plurality of mobile thermal imagers 200 and a plurality of sliding rods 400; when the passenger walks on the abnormal passageway 600, the mobile thermal imager 200 moves on the slide bar 400 to follow the passenger and repeatedly measure the passenger's body temperature. When the average value of the body temperatures of the multiple groups of passengers measured by the mobile thermal imager 200 is normal, the third door 700 is kept open; when the average value of the body temperatures of a plurality of groups of passengers measured by the mobile thermal imager 200 is abnormal, the third shutter 700 is closed, and meanwhile, the mobile thermal imager 200 sends the information of the passengers with abnormal body temperatures to the workbench computer 800. The identity identification module comprises an identity card scanning device 300, passenger identity card information acquired by the identity card scanning device 300, the passenger body temperature measured by the fixed thermal imager 100 and the passenger body temperature measured by the mobile thermal imager 200 are transmitted to the workbench computer 800 through RS485, and data are stored by the workbench computer 800.
As shown in fig. 2 and 7, the mobile thermal imager 200 includes a mobile thermal image camera 220, a mobile thermal processor, and a mobile thermal image display screen 250. The stationary thermal imager 100 includes a stationary thermal image camera 120, a stationary thermal processor, and a stationary thermal image display screen 150. The fixed heat processor and the movable heat processor carry out information interaction through RS 485.
The first and second shutters 101 and 102 are electrically connected to the fixed heat processor and directly controlled by the fixed heat processor. The third shutter 700 includes a signal receiver and a third processor which controls the third shutter 700 to be closed when the third processor receives a third shutter 700 control signal transmitted by the moving heat processor through RS 485.
The fixed thermal image camera 120 and the fixed thermal image display screen 150 are electrically connected to the fixed heat processor. The stationary thermal processor is used to control the operation of the stationary thermal imager 100 and to send control signals to the moving thermal processor. The fixed thermal imagery camera 120 acquires visible light images and infrared images and transmits the acquired visible light images and infrared images to the fixed thermal processor for processing and display through the fixed thermal imagery display screen 150. The stationary thermal image display 150 is used to display the infrared thermal image and the passenger's body temperature.
As shown in fig. 3 and 7, the mobile thermal image camera 220 and the mobile thermal image display screen 250 are electrically connected to the mobile thermal image processor. The mobile heat processor receives the control signal transmitted by the fixed heat processor through the RS485 and controls the mobile thermal imager 200 to work. The mobile thermographic camera 220 acquires visible light images and infrared images. The moving thermal image display 250 displays the infrared thermal image and the passenger's body temperature.
The mobile thermometry module further includes a mobile infrared transmitter 231, a mobile infrared receiver 232, and a mobile positioning light emitter 240. The mobile thermal imager camera 220, the mobile infrared emitter 231, the mobile infrared receiver 232 and the mobile positioning light emitter 240 are all fixedly connected with the first rotating shaft 210, and are rotatably connected with the mobile thermal imager 200 through the first rotating shaft 210. Namely, when the first rotating shaft 210 rotates, the mobile thermal image camera 220, the mobile infrared emitter 231, the mobile infrared receiver 232 and the mobile positioning light emitter 240 can be driven to rotate, so that the rotation amplitudes of the mobile thermal image camera 220, the mobile infrared emitter 231, the mobile infrared receiver 232 and the mobile positioning light emitter 240 are kept consistent. And the moving thermographic camera 220, the moving infrared transmitter 231, the moving infrared receiver 232 and the moving positioning light transmitter 240 are all directed toward the people in the abnormal passageway 600. The mobile infrared emitter 231 is used for emitting infrared rays, and the emitted infrared rays are reflected by the forehead of the passenger and then received by the mobile infrared receiver 232, so that the distance between the mobile thermal imager 200 and the forehead of the passenger is calculated after being processed by the mobile heat processor.
The fixed temperature measurement module further comprises a fixed infrared emitter 131, a fixed infrared receiver 132 and a fixed positioning light emitter 140 which are electrically connected with the fixed heat processor; and a voice announcer 160 electrically connected to the fixed thermal processor. The fixed thermal imager camera 120, the fixed infrared emitter 131, the fixed infrared receiver 132, and the fixed positioning light emitter 140 are all fixedly connected to the second rotating shaft 110, and are rotatably connected to the fixed thermal imager 100 through the second rotating shaft 110. The voice broadcaster 160 is electrically connected to the fixed heat processor. The stationary thermal imagery camera 120, the stationary infrared transmitter 131, the stationary infrared receiver 132, and the stationary positioning light emitter 140 are all directed toward the passenger.
The mobile thermal image display screen 250 is fixedly connected with the mobile thermal imager 200 and is used for enabling passengers to check the body temperature and check whether the passengers enter the mirror or not by themselves. The fixed thermal image display screen 150 is fixedly connected with the fixed thermal imager 100 and is used for allowing passengers to check the body temperature and check whether the passengers enter the mirror or not by themselves.
The visible light range emitted by the movable positioning light emitter 240 and the fixed positioning light emitter 140 is 500nm to 560nm, that is, the emitted positioning light is green visible light, and is used for visually judging whether the forehead area of the face is aligned to the movable thermal image camera 220 and the fixed thermal image camera 120, that is, when a passenger walks in the abnormal passage 600 or swipes an identity card, the passenger can automatically check through the movable thermal image display screen 250/the fixed thermal image display screen 150, or a patrol worker checks whether the forehead of the passenger has light spots to judge whether the forehead area of the passenger is aligned to the movable thermal image camera 220/the fixed thermal image camera 120.
Specifically, as shown in fig. 4, the sliding rod 400 includes a measuring rod 410 for moving to measure temperature and a recycling rod 420 for recycling the thermal imager 200, and the measuring rod 410 and the recycling rod 420 are parallel and connected at the head to form a ring. As shown in fig. 5 and fig. 6, a plurality of layers of sliding bars 400 are arranged on one side of the abnormal channel 600, and a plurality of thermal moving imagers 200 are arranged on each layer of sliding bars 400. As shown in fig. 4, the mobile thermal imager 200 is connected to the slide bar 400 in a rolling manner through a roller device 260, and the roller device 260 is disposed on one side of the mobile thermal imager 200 and is fixedly connected to the mobile thermal imager 200. The mobile thermal imager 200 moves on the measuring bar 410 following the traveling passenger, and when the end point is reached, the mobile thermal imager 200 ends the image pickup work and returns to the starting position from the recovery bar 420. When the passenger with abnormal body temperature walks on the abnormal passage 600, the mobile thermal imager 200 moves on the sliding rod 400, and the distance between the forehead of the passenger and the mobile thermal imager 200 is judged through the infrared emitter and the infrared receiver. When the distance is too large, the moving heat processor controls the roller device 260 to slow down the speed of the roller; when the distance is too small, the moving thermal processor controls the roller unit 260 to increase the speed of the roller.
The second embodiment:
the embodiment discloses an infrared thermal image temperature measurement method which is applied to an infrared thermal image temperature measurement system in the first embodiment. Specifically, as shown in fig. 8, the method comprises the following steps:
step S1: the identification card scanning apparatus 300 scans the passenger identification card and transfers the passenger identification information to the workstation computer 800. Namely, a passenger stands at the specified position of the entrance of the temperature measuring area, the identity card is swiped at the identity card scanning device 300 to record the identity information of the passenger, and the identity card scanning device 300 transmits the acquired identity information of the passenger to the workbench computer 800 through the RS485 and is recorded by the workbench computer 800.
Step S2: the fixed thermal imagery camera 120 collects infrared images and visible light images and transmits the acquired infrared images and visible light images to the fixed thermal processor for processing.
Step S3: the stationary thermal processor of the stationary thermal imager 100 processes the visible light image. After this step, the process proceeds to step S4. Specifically, as shown in fig. 9, the step S3 includes the following sub-steps (i.e., step S31-step S34):
step S31: the fixed heat processor detects the face position of the passenger and the position of the key point using the mtcnn method on the acquired visible light image.
Step S32: the fixed thermal processor determines whether the face is facing the fixed thermal imagery camera 120 based on the location of the keypoints.
When the judgment result is negative, that is, when the face of the person is not facing the fixed thermal image camera 120, the voice broadcaster 160 sends a voice prompt to prompt the passenger to face the fixed thermal image camera 120.
If so, i.e., if the face of the person is facing the fixed thermal image camera 120, the method proceeds to step S33;
step S33: the fixed heat processor judges the size of the face of the passenger according to the position of the key point and selects the largest face. At this time, the fixed heat processor defaults that the maximum face is the face corresponding to the current identification card information.
Step S34: the fixed heat processor judges the forehead area of the human face according to the position of the key point of the maximum human face. The frontal area of the face obtained by judgment is an area for measuring the body temperature, namely the position representing the body temperature of the human body in the infrared thermal imaging.
Step S4: and the fixed heat processor processes the infrared image and measures the body temperature of the forehead area of the passenger through the infrared image. The fixed heat processor judges the forehead area of the passenger when processing the visible light image, so the body temperature of the passenger only needs to measure the body temperature of the judged forehead area of the passenger.
When the body temperature of the forehead area of the passenger is within the healthy body temperature range, the fixed heat processor controls the first gear door 101 to be opened;
when the temperature of the forehead area of the passenger is not within the healthy body temperature range, the process proceeds to step S5.
Step S5: the stationary thermal imager 100 measures height information of the forehead of the passenger and selects the mobile thermal imager 200 that is highly matched, and sends a control signal to the mobile thermal imager 200. After this step, the process proceeds to step S6. Specifically, as shown in fig. 10, the step S5 further includes the following sub-steps (i.e., step S51-step S53):
step S51: the fixed thermal imaging camera 120 rotates around the rotating shaft, so that the fixed positioning light emitted by the fixed positioning light emitter 140 is directed at the forehead area of the passenger. The fixed positioning light functions to allow the passenger to determine whether the forehead of the passenger enters the irradiation area of the fixed thermal image camera 120 from the fixed thermal image display screen 150, and to facilitate the inspection staff to determine whether the temperature measurement operation of the passenger is standard.
Step S52: the infrared ray emitted by the infrared emitter is reflected by the forehead area of the passenger and then received by the infrared receiver. The fixed thermal image processor calculates a first linear distance between the fixed thermal image camera 120 and the forehead area of the passenger based on the transmitted and received infrared information.
Step S53: the fixed thermal image processor calculates the height of the forehead of the passenger according to the first linear distance, the rotating angle of the fixed thermal image camera 120 and the height of the fixed thermal image camera 120. The calculated height of the forehead of the passenger is used by the stationary heat processor to determine which height of the thermal moving imager 200 should be selected. The step can be convenient for the body temperature measurement of people with any height.
Step S6: and the mobile thermal image processor of the mobile thermal imager 200 with the proper height receives the control signal and drives the mobile thermal image camera 220 of the mobile thermal imager 200 with the proper height to collect the infrared image and the visible light image.
Step S7: moving the thermal processor to process the visible light image; and sends a feedback signal to the stationary heat processor after the preparation is completed. After this step, the process proceeds to step S8. Specifically, as shown in fig. 11, the present step further includes the following sub-steps (i.e., step S71-step S72):
step S71: the movable heat processor detects the positions of the faces and the key points of the passengers by using an mtcnn method for the acquired visible light images;
step S72: the mobile heat processor judges the size of the face of the passenger according to the position of the face and the position of the key point, and selects the largest face. And after the movable heat processor finishes selecting the maximum human face, sending a feedback signal to the fixed heat processor.
Step S8: and after receiving the feedback signal, the fixed heat processor controls the second shutter 102 to open. Namely, the second door 102 is opened after the mobile thermal imager 200 completes the preparation work. The passenger enters the abnormal passage 600 from the second door 102, and the temperature measurement is performed in the abnormal passage 600, that is, the temperature measurement is performed repeatedly during the traveling process.
Step S9: the mobile thermal imager 200 moves on the slide bar 400 in accordance with the traveling speed of the passenger. After this step, the process proceeds to step S10. Specifically, as shown in fig. 12, the present step further includes the following sub-steps (i.e., step S91-step S92):
step S91: the moving thermal imaging camera 220 rotates around the rotating shaft, so that the moving positioning light emitted by the moving positioning light emitter 240 is directed to the forehead area of the passenger. It is convenient to measure the second straight distance between the mobile thermal image camera 220 and the forehead area of the passenger by the mobile infrared emitter 231 and the mobile infrared receiver 232.
Step S92: the infrared rays emitted from the mobile infrared ray emitter 231 are reflected by the forehead area of the passenger and then received by the mobile infrared ray receiver 232; the mobile thermal image processor calculates a second linear distance between the mobile thermal image camera 220 and the forehead area of the passenger according to the transmitted and received infrared information.
Step S93: the moving heat processor controls the moving speed of the roller device 260 to ensure that the second linear distance is constant. When the second straight-line distance is too large, the moving heat processor controls the roller device 260 to decelerate; when the second linear distance is too large, the moving heat processor controls the roller device 260 to accelerate, ensuring that the second linear distance remains unchanged. The second straight-line distance is smaller than the first straight-line distance, the distance is smaller, and the authenticity of a measured result is higher.
Step S10: the mobile heat processor processes the infrared images, measures the body temperatures of the forehead areas of a plurality of groups of passengers, and calculates the average value;
when the mean value is within the healthy body temperature range, the abnormal channel 600 outlet remains unblocked;
when the average value is not in the healthy body temperature range, the third shutter 700 at the outlet of the abnormal channel 600 is closed, and the workbench server receives the abnormal body temperature information of the passenger and prompts the staff. With third door 700 closed, the passenger can only walk to the work bench and be taken and handled by the crew.
The embodiment can reduce the working pressure of workers in public places with large passenger flow, such as airports and stations, and has the functions of recording the flowing information automation of the workers and the automation of the temperature measurement of the workers by the mode that the passengers brush the identity cards and fix the thermal imager 100 for automatic temperature measurement.
When the temperature of the first round is abnormal, namely the temperature of the fixed thermal imager 100 is measured and displayed as abnormal, the second shutter 102 of the abnormal channel 600 can be opened in time instead of the first shutter 101 of the normal channel 500, so that on one hand, the abnormal-body-temperature passenger and the normal-body-temperature passenger can be separated and isolated at the first time, and panic can be avoided; on the other hand, when the temperature of a passenger is detected to be abnormal, the passenger can enter the abnormal channel 600 in time instead of being preprocessed by the staff, so that the problems of overlong queue and staff blockage can be avoided, and the condition of congestion at the entrance of the temperature measuring area can be avoided. When a passenger who originally should have normal body temperature detects abnormally in the first wheel body temperature due to rain, blowing or drinking hot drinks and other reasons, the passenger who has the abnormal body temperature in the position can obtain body temperature detection for many times in the walking process of the abnormal channel 600, finally obtain a relatively accurate result, and can avoid the passenger from blocking at the entrance of the temperature measuring area to cause people to block.
The mobile thermal imager 200 is arranged on the abnormal passage 600, can move along with the movement of the passengers, and automatically accelerates or decelerates to keep a certain distance from the passengers. In the design, when a passenger walks in the abnormal passage 600, the passenger can be subjected to temperature measurement for many times without influencing the walking of the passenger, and the average value of the results of the temperature measurement for many times is calculated, so that the accuracy of the temperature measurement result is improved.
The mobile thermal imagers 200 of the embodiment are provided with a plurality of mobile thermal imagers 200, the mobile thermal imagers 200 with proper heights are judged and selected according to detection results of the fixed thermal imagers 100 at different heights, the second baffle doors 102 are opened after selection is completed to allow passengers to enter, it can be guaranteed that the passengers with any height can obtain following detection of the mobile thermal imagers 200 with proper heights when walking in the abnormal channel 600, and the application range of objects is wide.
In conclusion, the temperature measurement device has the advantages of avoiding the jam of the temperature measurement personnel, improving the accuracy of body temperature detection, being suitable for people with wide height and reducing the working pressure of the temperature measurement personnel.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.
Claims (6)
1. An infrared thermal image temperature measurement system is characterized by comprising an identity identification module, a fixed temperature measurement module and a movable temperature measurement module;
the fixed temperature measurement module and the identity recognition module are arranged at the entrance of the temperature measurement area; the fixed temperature measurement module comprises a first stop (101) arranged at the inlet of a normal channel (500) of the temperature measurement area and a second stop (102) arranged at the inlet of an abnormal channel (600) of the temperature measurement area, and the movable temperature measurement module comprises a third stop (700) arranged at the outlet of the abnormal channel (600);
the fixed temperature measurement module comprises a fixed thermal imager (100), and the fixed thermal imager (100) controls the opening and closing states of the first shutter (101) and the second shutter (102) according to the measured temperature of the passenger;
the mobile temperature measurement module is arranged on one side of the abnormal channel (600); the mobile temperature measuring module comprises a plurality of mobile thermal imagers (200) and a plurality of sliding rods (400); when a passenger walks on the abnormal passageway (600), the mobile thermal imager (200) moves on the sliding bar (400) to follow the passenger and repeatedly measure the body temperature of the passenger;
the mobile thermal imager (200) controls the opening and closing states of the third shutter (700) according to the measured body temperature conditions of the passengers, and sends abnormal body temperature passenger information to the workbench computer (800);
the identity identification module comprises an identity card scanning device (300), passenger identity card information acquired by the identity card scanning device (300), the passenger body temperature measured by the fixed thermal imager (100) and the passenger body temperature measured by the mobile thermal imager (200) are transmitted to the workbench computer (800) through RS485, and data are stored by the workbench computer (800);
the stationary thermal imager (100) comprises: a fixed thermal image processor, a fixed thermal image display screen (150) and a fixed thermal image camera (120) electrically connected with the fixed thermal image processor;
the first gear (101) and the second gear (102) are both electrically connected with the fixed heat processor and are directly controlled by the fixed heat processor;
the mobile thermal imager (200) comprises a mobile thermal image processor, a mobile thermal image display screen (250) and a mobile thermal image camera (220) electrically connected with the mobile thermal image processor;
the fixed thermal processor is used for controlling the fixed thermal imager (100) to work and sending a control signal to the movable thermal processor; the fixed thermal image camera (120) acquires a visible light image and an infrared image; the fixed thermal image display screen (150) displays an infrared thermal image and the body temperature of the passenger;
the third shutter (700) comprises a signal receiver and a third processor, and when the third processor receives a third shutter (700) control signal sent by the mobile heat processor through RS485, the third processor controls the third shutter (700) to close;
the mobile thermal image processor receives the control signal and controls the mobile thermal imager (200) to work; the mobile thermal image camera (220) acquires a visible light image and an infrared image; the mobile thermal image display screen (250) displays an infrared thermal image and the body temperature of the passenger;
the fixed heat processor and the movable heat processor carry out information interaction through the RS 485;
the mobile temperature measurement module further comprises a mobile infrared transmitter (231), a mobile infrared receiver (232) and a mobile positioning light emitter (240), which are electrically connected with the mobile heat processor;
the mobile thermal image camera (220), the mobile infrared emitter (231), the mobile infrared receiver (232) and the mobile positioning light emitter (240) are all fixedly connected with a first rotating shaft piece (210) and are rotationally connected with the mobile thermal imager (200) through the first rotating shaft piece (210); the mobile thermographic camera (220), the mobile infrared transmitter (231), the mobile infrared receiver (232) and the mobile positioning light transmitter (240) are all directed towards an abnormal channel (600) personnel handling direction;
the fixed temperature measurement module also comprises a fixed infrared transmitter (131), a fixed infrared receiver (132) and a fixed positioning light emitter (140), which are electrically connected with the fixed heat processor; and a voice announcer (160) electrically connected to the fixed thermal processor;
the fixed thermal imagery camera (120), the fixed infrared emitter (131), the fixed infrared receiver (132) and the fixed positioning light emitter (140) are all fixedly connected with a second rotating shaft piece (110), and are rotationally connected with the fixed thermal imagery system (100) through the second rotating shaft piece (110); the voice broadcasting device (160) is electrically connected with the fixed heat processor; the stationary thermal imagery camera (120), the stationary infrared transmitter (131), the stationary infrared receiver (132), and the stationary positioning light emitter (140) are all directed toward a passenger;
the visible light range of the mobile positioning light emitter (240) and the fixed positioning light emitter (140) is 500nm to 560 nm;
the sliding rod (400) comprises a measuring rod (410) used for moving temperature measurement and a recovery rod (420) used for recovering the thermal mobile imager (200), and the measuring rod (410) and the recovery rod (420) are parallel and are connected end to form a ring; the mobile thermal imager (200) is connected with the sliding rod (400) in a rolling mode through a roller device (260).
2. An infrared thermal image temperature measurement method is applied to the infrared thermal image temperature measurement system of claim 1, and is characterized by comprising the following steps:
step S1: the identity card scanning device (300) scans the identity card of the passenger and transmits the identity information of the passenger to the workbench computer (800);
step S2: the fixed thermal image camera (120) collects infrared images and visible light images and transmits the infrared images and the visible light images to the fixed thermal processor for processing;
step S3: the fixed heat processor processes the visible light image;
step S4: the fixed heat processor processes the infrared image and measures the temperature of the forehead area of the passenger;
when the body temperature of the forehead area of the passenger is within a healthy body temperature range, the fixed heat processor controls a first gear door (101) to be opened;
when the temperature of the forehead area of the passenger is not within the healthy body temperature range, the step S5 is carried out;
step S5: the fixed thermal imager (100) measures height information of the forehead of a passenger, selects a mobile thermal imager (200) with proper height, and sends a control signal to the mobile thermal imager (200);
step S6: the mobile thermal image processor of the mobile thermal imager (200) with the proper height receives the control signal and drives a mobile thermal image camera (220) of the mobile thermal imager (200) with the proper height to collect an infrared image and a visible light image;
step S7: the movable heat processor processes the visible light image and sends a feedback signal to the fixed heat processor after the preparation work is finished;
step S8: after receiving the feedback signal, the fixed heat processor controls a second gear (102) to be opened;
step S9: the mobile thermal imager (200) moves on the sliding rod (400) in accordance with the traveling speed of the passenger;
step S10: the mobile heat processor processes the infrared images, measures the body temperatures of the forehead areas of a plurality of groups of passengers, and calculates an average value;
when the mean value is within the healthy body temperature range, the abnormal channel (600) outlet is kept open;
and when the average value is not in the healthy body temperature range, a third shutter (700) at the outlet of the abnormal channel (600) is closed, and the workbench server receives the abnormal body temperature information of the passenger and prompts a worker.
3. The infrared thermographic temperature measurement method according to claim 2, wherein said step S3 further comprises the following sub-steps:
step S31: the fixed heat processor detects the face position of the passenger and the position of the key point by using an mtcnn method for the acquired visible light image;
step S32: the fixed thermal image processor judges whether the face faces the fixed thermal image camera (120) or not according to the positions of the key points;
when the judgment result is negative, the voice broadcaster (160) sends out a voice prompt;
if the determination result is yes, the process proceeds to step S33;
step S33: the fixed heat processor judges the size of the face of the passenger according to the position of the key point and selects the largest face;
step S34: and the fixed heat processor judges the forehead area of the human face according to the position of the key point of the maximum human face.
4. The thermographic thermometry method according to claim 3, wherein said step S5 further comprises the sub-steps of:
step S51: the fixed thermal image camera (120) rotates around the second rotating shaft piece (110), so that the fixed positioning light emitted by the fixed positioning light emitter (140) is aligned to the forehead area of the passenger;
step S52: infrared rays emitted by the fixed infrared emitter (131) are reflected by the forehead area of the passenger and then are received by the fixed infrared receiver (132); the fixed thermal image processor calculates a first linear distance between the fixed thermal image camera (120) and the forehead area of the passenger according to the transmitted and received infrared information;
step S53: and the fixed thermal image processor calculates the height of the forehead of the passenger according to the first linear distance, the rotating angle of the fixed thermal image camera (120) and the height of the fixed thermal image camera (120).
5. The thermographic thermometry method according to claim 4, wherein said step S7 further comprises the sub-steps of:
step S71: the movable heat processor detects the face position and the key point position of the passenger by using an mtcnn method for the acquired visible light image;
step S72: the mobile heat processor judges the size of the face of the passenger according to the position of the face and the position of the key point, and selects the largest face; and after the movable heat processor finishes selecting the maximum human face, sending a feedback signal to the fixed heat processor.
6. The thermographic thermometry method according to claim 5, wherein said step S9 further comprises the sub-steps of:
step S91: the mobile thermal image camera (220) rotates around the first rotating shaft piece (210) so that the mobile positioning light emitted by the mobile positioning light emitter (240) is aligned to the forehead area of the passenger;
step S92: infrared rays emitted by the mobile infrared ray emitter (231) are reflected by the forehead area of the passenger and then are received by the mobile infrared ray receiver (232); the mobile thermal image processor calculates a second linear distance between the mobile thermal image camera (220) and the forehead area of the passenger according to the transmitted and received infrared information;
step S93: the moving heat processor controls the moving speed of the roller device (260) and ensures that the second linear distance is unchanged; the second linear distance is less than the first linear distance.
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