CN111770312A - Security monitoring method and security monitoring system - Google Patents
Security monitoring method and security monitoring system Download PDFInfo
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- CN111770312A CN111770312A CN202010671548.4A CN202010671548A CN111770312A CN 111770312 A CN111770312 A CN 111770312A CN 202010671548 A CN202010671548 A CN 202010671548A CN 111770312 A CN111770312 A CN 111770312A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/61—Control of cameras or camera modules based on recognised objects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
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Abstract
The invention discloses a security monitoring method, which comprises the following steps: acquiring a video image shot by a camera; identifying a human shape in a video image, acquiring the position of the human shape in the video image in real time, and sending a following irradiation instruction according to the position of the human shape in the video image; and driving a spotlight device to follow the spotlight to irradiate the human shape according to the follow-irradiation instruction. The invention also discloses a security monitoring system. The invention can be used for places such as villas and the like which need to be prevented from being invaded.
Description
Technical Field
The invention relates to the field of video monitoring, in particular to a security monitoring method and a security monitoring system.
Background
With the development of society, security monitoring plays an increasingly important role in life. The principle of security monitoring is that a video camera is used for acquiring a video image, and then the video image is processed to identify the face or the shape of a person in the video image. However, the existing security monitoring video images are usually processed manually, and the video images need to be observed manually in real time or the recorded video images are called to review after the incident, so that people in the video images are found manually and then corresponding treatment is carried out, and the cost is high because of the need for people to participate. In addition, the way of observing the video images manually in real time requires that the observing people continuously pay high attention to the video images, and the real-time images are usually ignored due to negligence or leaving of people, which is costly and has poor safety. The mode of calling the recorded video image for review after the incident can only play a role of post-incident remediation, has the advantages of delay and poorer safety, and is not suitable for real-time monitoring. Therefore, for places needing real-time intrusion prevention, such as villas or unattended places, the existing security monitoring system has the defect of poor safety.
Disclosure of Invention
The invention provides a security monitoring method and a security monitoring system, aiming at solving the technical problem of poor security of the security monitoring system in the prior art.
In order to solve the technical problems, the technical scheme adopted by the invention is to design a security monitoring method, which comprises the following steps:
acquiring a video image shot by a camera;
identifying a human shape in a video image, acquiring the position of the human shape in the video image in real time, and sending a following irradiation instruction according to the position of the human shape in the video image;
and driving a spotlight device to follow the spotlight to irradiate the human shape according to the follow-irradiation instruction.
The security monitoring method further comprises a position matching step, wherein the position matching step comprises the following steps:
segmenting the video image into a plurality of cells;
carrying out position-by-position correspondence on the pointing position of the spotlight device and each divided cell, and storing position corresponding data;
the step of acquiring the position of the human figure in the video image in real time and sending a following irradiation instruction according to the position of the human figure in the video image comprises the following steps: obtaining a corresponding directing position of the human figure corresponding to the spotlight device according to the cell in the video image of the human figure and the position corresponding data, and sending a following irradiation instruction according to the corresponding directing position;
the step of driving the spotlight device to follow the spotlight human shape according to the follow-up irradiation instruction comprises the following steps of: and driving the spotlight device to rotate to the corresponding directional position according to the following irradiation instruction, and irradiating the human shape along with the spotlight.
The camera is stationary to ensure that the area of the video image captured by the camera is stationary.
The step of segmenting the video image into a plurality of cells comprises: and carrying out equidistant segmentation on the acquired video image into a plurality of cells.
The security monitoring method further comprises the steps of selecting a part of cells in the video image to be set as a defense area;
the step of identifying the human shape in the video image is as follows: only the human shape in the defense area in the video image is identified.
The real-time acquisition of the position of the human figure in the video image comprises the real-time acquisition of the current position of the human figure in the video image and the moving direction of the human figure.
The spotlight device comprises a spotlight lamp and a rotating tripod head for driving the spotlight lamp to rotate horizontally and vertically, and the rotating tripod head receives the following irradiation instruction to drive the spotlight lamp to rotate to follow the spotlight to irradiate human figures.
The light gathering irradiation lamp is a spot lamp.
The invention also provides a security monitoring system, which comprises:
a camera that takes a video image;
the human shape recognition device is connected with the camera, acquires a video image of the camera, recognizes the human shape in the video image, acquires the position of the human shape in the video image in real time, and sends out a following irradiation instruction according to the position of the human shape in the video image;
and the spotlight irradiation device is connected with the human shape recognition device and irradiates the human shape along with spotlight according to the following irradiation instruction of the human shape recognition device.
The spotlight irradiation device comprises a spotlight irradiation lamp and a rotating holder for driving the spotlight irradiation lamp to rotate horizontally and vertically;
the security monitoring system further comprises:
an image segmentation module that segments the video image into a plurality of cells;
the position matching module is used for carrying out position-by-position correspondence on the pointing position of the spotlight lamp and each divided cell and storing position corresponding data;
the human shape recognition device obtains a corresponding pointing position of the human shape corresponding to the spotlight lamp according to the cell in the video image where the human shape is located and the position corresponding data, and sends out a following irradiation instruction according to the corresponding pointing position; and the rotating cradle head receives the following irradiation instruction to drive the spotlight irradiation lamp to rotate to the corresponding pointing position and irradiate the human shape following the spotlight.
The invention solves the defect of poor safety caused by manual observation or after-call video recording in the prior art by automatically identifying the human shape in the video image; meanwhile, the position of the human figure in the video image is obtained in real time, a following irradiation instruction is sent according to the position of the human figure in the video image, the spotlight irradiation device is driven to follow the spotlight irradiation human figure according to the following irradiation instruction, and the spotlight irradiation device is used for following the human figure to irradiate, so that an invader is better warned, the invader is warned, the deterrent effect is achieved, the situation is prevented from further developing, and the safety performance is further improved. In addition, by utilizing spotlight irradiation, compared with large-area illumination, the spotlight can play a better deterrent effect, and can reduce interference on users or surrounding users.
Drawings
The invention is described in detail below with reference to examples and figures, in which:
FIG. 1 is a flow chart of a security monitoring method of the present invention;
FIG. 2 is a schematic view of video image segmentation of the security monitoring method of the present invention;
FIG. 3 is a schematic diagram of the security monitoring method of the present invention;
FIG. 4 is a logical block diagram of the security monitoring system of the present invention;
FIG. 5 is a perspective view of the spotlight device of the present invention;
FIG. 6 is an exploded view of the spotlight device of the present invention;
FIG. 7 is a cross-sectional view taken at A-A in FIG. 6;
FIG. 8 is a cross-sectional view taken at B-B of FIG. 6;
FIG. 9 is a perspective view of the rotating head of the spotlight device of the present invention with the fixed base, the support base and the second shaft removed;
fig. 10 is a perspective view of the rotating head of the spotlight device of the present invention from another perspective with the fixed base, the support base and the second shaft removed.
Detailed Description
The embodiments of the invention are further illustrated in the following figures:
please refer to fig. 1. The invention relates to a security monitoring method, which comprises the following steps:
the first step is as follows: and acquiring a video image shot by the camera.
The camera can be common digital or analog camera. Since the intrusion behavior usually occurs at night, the camera needs to support night vision. The present invention is not limited to a specific brand or model of camera as long as raw video data can be obtained.
In order to facilitate subsequent positioning of the human figure, so that the spotlight device can conveniently follow the human figure to irradiate in real time and prevent the problem of complex positioning caused by rotation of the camera, the camera is preferably fixed, the camera is fixed in position and cannot be moved or adjusted in angle, and the area of a video image shot by the camera is fixed.
In order to enable the spotlight device to follow the human-shaped irradiation in real time, the spotlight device is provided as a spotlight device capable of rotating irradiation. According to the invention, the spotlight irradiation device preferably comprises a spotlight irradiation lamp and a rotating cradle head for driving the spotlight irradiation lamp to rotate transversely and vertically, so that the spotlight irradiation lamp can rotate transversely and vertically, and the pointing angle of the spotlight irradiation device can be adjusted according to the position of a human body. In this embodiment, the spotlight illumination fixture can rotate vertically by 180 ° and horizontally by 360 °. In order to enable the spotlight device to irradiate along with the humanoid shape in real time and avoid the influence of too slow rotation on the irradiation along with the humanoid shape, the spotlight device preferably supports high-speed rotation at a rotation speed of not less than 60 degrees per second.
In order to make the light emitted by the spotlight lamp irradiate the human shape and follow the human shape in real time through strong light, the spotlight lamp adopts a focusing lens and can focus the light on the human shape. The light power can be different from 10 to 1000 watts.
The common lamplight irradiation is in a scattering state, although the large-area illumination can be realized, the pertinence is unavailable, the deterrence is not strong, and the interference to users or surrounding users is easily caused by the large-area illumination. By utilizing spotlight radiation, compared with large-area illumination, the spotlight radiation device can play a better deterrent effect and simultaneously reduce interference on users or surrounding users. The spotlight illumination lamp is preferably a spotlight.
The second step is that: identifying the human shape in the video image, acquiring the position of the human shape in the video image in real time, and sending out a following irradiation instruction according to the position of the human shape in the video image.
Please refer to fig. 2. In order to acquire the position of the human figure in the video image in real time, the video image shot by the camera and the pointing position of the spotlight device are matched in position. The location matching includes:
1. the video image is divided into a plurality of cells 91.
The video image is divided into a plurality of cells, each cell is endowed with a position parameter, and the position parameter corresponds to the position of an actual area.
For calculation, the acquired video image is equidistantly divided into a plurality of cells. How many cells the video image is divided into can be specifically divided according to the size of the actual area shot by the video image. In this embodiment, after a single camera is acquired to acquire a video image, the image is equally spaced and divided according to 64 cells, and the dividing effect is shown in fig. 2.
2. And carrying out position-by-position correspondence on the pointing position of the spotlight device and each divided cell, and storing position corresponding data.
And manually commanding the pointing position of the spotlight lamp to keep consistent with the position of the segmentation cell, enabling all the cells to correspond one by one, and storing the position corresponding data so as to obtain the corresponding pointing position of the human shape corresponding to the spotlight device according to the cell of the video image where the human shape is located.
Since the cameras are stationary, one spotlight may correspond to multiple cameras. When there are a plurality of cameras, the corresponding method is the same as that of a single camera, and each camera may be repeatedly associated with a spotlight lamp.
After the position matching in the previous stage is ready, the human figure 92 in the video image can be automatically recognized, the corresponding pointing position of the human figure corresponding to the spotlight device is obtained according to the cell in the video image where the human figure is located and the corresponding position data, and a following irradiation instruction is sent according to the corresponding pointing position.
The real-time acquisition of the position of the human figure in the video image comprises the real-time acquisition of the current position of the human figure in the video image and the moving direction of the human figure. The moving direction of the figure can be judged by the orientation of the figure. The next step position of the human shape can be quickly judged according to the moving direction of the human shape, so that the pointing position of the spotlight lamp can be quickly judged.
Of course, the human-shaped moving speed can be added to further improve the following capability of the spotlight. The next motion track of the human shape can be quickly judged by utilizing the current position of the human shape in the video image, the moving direction of the human shape and the moving speed of the human shape, so that which cell of the video image the human shape appears in is quickly judged, and the pointing position of the spotlight lamp is quickly adjusted to follow the irradiated human shape.
Please refer to FIG. 3. In some places, partial areas shot by the camera can be outside the security area, and the outside of the security area does not need to be prevented from being invaded. If the camera shoots that part of the area is located outside the villa enclosure, at the moment, if identification and irradiation are carried out, on one hand, the calculation amount of security monitoring is increased, and on the other hand, interference can be caused to people outside the security area. Therefore, the security monitoring method of the present invention further includes selecting a part of the cells in the video image to be set as a defense area 93, as shown by a thick solid line in the figure, for example, only a part of the cells corresponding to the security area located in the villa enclosure is set as the defense area. At the moment, only the human shape in the defense area in the video image is recognized, and no processing is carried out on the video image outside the defense area. Through this setting, reducible calculation volume also can not cause the interference to the people outside the security protection area simultaneously.
The image recognition capability is the premise of ensuring that the subsequent spotlight device accurately and smoothly tracks the human shape for irradiation. In this embodiment, the following processing method is adopted for image recognition:
1. and acquiring a real-time video stream, starting a motion detection algorithm, and filtering out images which are too small and do not need to be analyzed in one step through a set image change threshold value.
2. And intercepting the changed part in the image according to a movement detection algorithm, comparing the intercepted part with the defense deployment area of the camera, judging whether the intercepted part is in the defense deployment area, and respectively intercepting and splicing new images if a plurality of parts of the image change in the defense deployment area.
3. And (4) the intercepted picture is handed to a human form recognition algorithm for pre-checking, and if suspected, the picture is deeply calculated and continuously judged. When the human shape is judged for the first time, in order to avoid the defect of misjudgment, the human shape algorithm is used for carrying out secondary deep judgment, and when the human shape is judged for 2 times of calculation, the human shape recognition algorithm carries out continuous recognition according to the image of the video stream. The purpose of the continuous recognition is to obtain the position of the image after the change caused by the human-shaped movement.
After the human shape is judged, the spotlight lamp is started, the image intercepted by the human-shaped video stream is calculated each time, the image corresponds to the cell divided by the camera, the cell in which the human shape is mainly overlapped is calculated, the rotating instruction of the rotating tripod head is deduced according to the pointing position of the spotlight lamp corresponding to the camera dividing area in the early preparation work, and the executing command is sent to the rotating tripod head, so that the spotlight lamp can track the actual human shape position all the time, the light irradiation is continuously focused, and the effect of accurate deterrence is achieved.
The human shape recognition can be realized by adopting an x86 structure host, configuring different CPUs and GPUs according to the scale of the calculation camera and adopting a 64-bit linux operating system.
The third step: and driving a spotlight device to follow the spotlight to irradiate the human shape according to the follow-irradiation instruction.
And driving the spotlight device to rotate to the corresponding directional position according to the following irradiation instruction, and irradiating the human shape along with the spotlight. After a rotating cradle head of the spotlight device receives the following irradiation instruction, the spotlight lamp is rotated to the corresponding directional position according to the following irradiation instruction, the spotlight lamp is started to irradiate the human shape, and the spotlight lamp is driven to rotate to follow the spotlight to irradiate the human shape.
When the image identification has the humanoid, constantly schedule repeatedly rotatory cloud platform and follow the humanoid and shine, until in the fixed time, for example in 15 seconds, can't find the humanoid after, close spotlight and shine lamps and lanterns, rotatory cloud platform resets simultaneously, resumes initial quiescent condition.
Referring to fig. 4, the security monitoring system of the present invention includes a camera 1, a human shape recognition device 2 and a light condensing and irradiating device 3.
Wherein:
the camera 1 is used to capture video images. The camera can be common digital or analog camera. Since the intrusion behavior usually occurs at night, the camera needs to support night vision. The present invention is not limited to a specific brand or model of camera as long as raw video data can be obtained.
In order to facilitate subsequent positioning of the human figure, so that the spotlight device can conveniently follow the human figure to irradiate in real time and prevent the problem of complex positioning caused by rotation of the camera, the camera is preferably fixed, the camera is fixed in position and cannot be moved or adjusted in angle, and the area of a video image shot by the camera is fixed.
The human shape recognition device 2 is connected with the camera, acquires a video image of the camera, recognizes human shapes in the video image, acquires positions of the human shapes in the video image in real time, and sends out following irradiation instructions according to the positions of the human shapes in the video image.
Please refer to fig. 2. In order to acquire the position of the human figure in the video image in real time, the video image shot by the camera and the pointing position of the spotlight device are matched in position. The security monitoring system further comprises an image segmentation module and a position matching module, wherein the image segmentation module and the position matching module are integrated in the human shape recognition device. Wherein:
the image segmentation module segments the video image into a plurality of cells 91.
The video image is divided into a plurality of cells, each cell is endowed with a position parameter, and the position parameter corresponds to the position of an actual area.
For calculation, the acquired video image is equidistantly divided into a plurality of cells. How many cells the video image is divided into can be specifically divided according to the size of the actual area shot by the video image. In this embodiment, after a single camera is acquired to acquire a video image, the image is equally spaced and divided according to 64 cells, and the dividing effect is shown in fig. 2.
And the position matching module performs position-by-position correspondence on the pointing position of the spotlight lamp and each divided cell, and stores position corresponding data.
And manually commanding the pointing position of the spotlight lamp to keep consistent with the position of the segmentation cell, enabling all the cells to correspond one by one, and storing the position corresponding data so as to obtain the corresponding pointing position of the human shape corresponding to the spotlight device according to the cell of the video image where the human shape is located.
Since the cameras are stationary, one spotlight may correspond to multiple cameras. When there are a plurality of cameras, the corresponding method is the same as that of a single camera, and each camera may be repeatedly associated with a spotlight lamp.
After the position matching in the previous stage is ready, the human figure 92 in the video image can be automatically recognized, the corresponding pointing position of the human figure corresponding to the spotlight device is obtained according to the cell in the video image where the human figure is located and the corresponding position data, and a following irradiation instruction is sent according to the corresponding pointing position.
The real-time acquisition of the position of the human figure in the video image comprises the real-time acquisition of the current position of the human figure in the video image and the moving direction of the human figure. The moving direction of the figure can be judged by the orientation of the figure. The next step position of the human shape can be quickly judged according to the moving direction of the human shape, so that the pointing position of the spotlight lamp can be quickly judged.
Of course, the human-shaped moving speed can be added to further improve the following capability of the spotlight. The next motion track of the human shape can be quickly judged by utilizing the current position of the human shape in the video image, the moving direction of the human shape and the moving speed of the human shape, so that which cell of the video image the human shape appears in is quickly judged, and the pointing position of the spotlight lamp is quickly adjusted to follow the irradiated human shape.
Please refer to FIG. 3. In some places, partial areas shot by the camera can be outside the security area, and the outside of the security area does not need to be prevented from being invaded. If the camera shoots that part of the area is located outside the villa enclosure, at the moment, if identification and irradiation are carried out, on one hand, the calculation amount of security monitoring is increased, and on the other hand, interference can be caused to people outside the security area. Therefore, the present invention may also select a part of the cells in the video image to be set as a defense area 93, as shown by the thick solid line part in the figure, for example, only a part of the cells corresponding to the security area located in the villa enclosure is set as the defense area. At the moment, only the human shape in the defense area in the video image is recognized, and no processing is carried out on the video image outside the defense area. Through this setting, reducible calculation volume also can not cause the interference to the people outside the security protection area simultaneously.
The image recognition capability is the premise of ensuring that the subsequent spotlight device accurately and smoothly tracks the human shape for irradiation. In this embodiment, the following processing method is adopted for image recognition:
1. and acquiring a real-time video stream, starting a motion detection algorithm, and filtering out images which are too small and do not need to be analyzed in one step through a set image change threshold value.
2. And intercepting the changed part in the image according to a movement detection algorithm, comparing the intercepted part with the defense deployment area of the camera, judging whether the intercepted part is in the defense deployment area, and respectively intercepting and splicing new images if a plurality of parts of the image change in the defense deployment area.
3. And (4) the intercepted picture is handed to a human form recognition algorithm for pre-checking, and if suspected, the picture is deeply calculated and continuously judged. When the human shape is judged for the first time, in order to avoid the defect of misjudgment, the human shape algorithm is used for carrying out secondary deep judgment, and when the human shape is judged for 2 times of calculation, the human shape recognition algorithm carries out continuous recognition according to the image of the video stream. The purpose of the continuous recognition is to obtain the position of the image after the change caused by the human-shaped movement.
After the human shape is judged, the spotlight lamp is started, the image intercepted by the human-shaped video stream is calculated each time, the image corresponds to the cell divided by the camera, the cell in which the human shape is mainly overlapped is calculated, the rotating instruction of the rotating tripod head is deduced according to the pointing position of the spotlight lamp corresponding to the camera dividing area in the early preparation work, and the executing command is sent to the rotating tripod head, so that the spotlight lamp can track the actual human shape position all the time, the light irradiation is continuously focused, and the effect of accurate deterrence is achieved.
The human shape recognition device can be realized by adopting an x86 structure host, configuring different CPUs and GPUs according to the scales of the calculation cameras and adopting a 64-bit linux operating system.
The spotlight device 3 is connected with the human shape recognition device and follows the spotlight to irradiate the human shape according to the following irradiation instruction of the human shape recognition device. The human shape recognition device obtains a corresponding pointing position of the human shape corresponding to the spotlight lamp according to the cell in the video image where the human shape is located and the position corresponding data, and sends out a following irradiation instruction according to the corresponding pointing position; and the rotating cradle head receives the following irradiation instruction to drive the spotlight irradiation lamp to rotate to the corresponding pointing position and irradiate the human shape following the spotlight.
In order to enable the spotlight device to follow the human-shaped irradiation in real time, the spotlight device is provided as a spotlight device capable of rotating irradiation. According to the invention, the spotlight irradiation device preferably comprises a spotlight irradiation lamp and a rotating cradle head for driving the spotlight irradiation lamp to rotate transversely and vertically, so that the spotlight irradiation lamp can rotate transversely and vertically, and the pointing angle of the spotlight irradiation device can be adjusted according to the position of a human body. In this embodiment, the spotlight illumination fixture can rotate vertically by 180 ° and horizontally by 360 °. In order to enable the spotlight device to irradiate along with the humanoid shape in real time and avoid the influence of too slow rotation on the irradiation along with the humanoid shape, the spotlight device preferably supports high-speed rotation at a rotation speed of not less than 60 degrees per second.
In order to make the light emitted by the spotlight lamp irradiate the human shape and follow the human shape in real time through strong light, the spotlight lamp adopts a focusing lens and can focus the light on the human shape. The light power can be different from 10 to 1000 watts.
The common lamplight irradiation is in a scattering state, although the large-area illumination can be realized, the pertinence is unavailable, the deterrence is not strong, and the interference to users or surrounding users is easily caused by the large-area illumination. By utilizing spotlight radiation, compared with large-area illumination, the spotlight radiation device can play a better deterrent effect and simultaneously reduce interference on users or surrounding users. The spotlight illumination lamp is preferably a spotlight.
Please refer to FIG. 5-FIG. 10. The spotlight device 3 comprises a spotlight lamp 4, a rotary holder 5 and a directional sound tube 6. Wherein:
the light-gathering illuminating lamp 4 comprises a strip-shaped lamp shell 41 which is hollow in the center and has an opening at one end, a lamp bead (not shown in the figure) arranged in the lamp shell, a light-gathering lens 42 arranged at the front end of the lamp bead, and a lamp cover 43 covering the opening of the lamp shell. The side surface of the lamp housing 41 is provided with a lamp housing hole 411 which penetrates through the center of the lamp housing. The spotlight lamp is mainly used for strongly irradiating the human shape, not only can play a role in illuminating the human shape, but also can play a role in deterrence through spotlight irradiation. The spotlight illumination lamp is preferably a spotlight.
The rotating tripod head 5 is mainly used for driving the spotlight illumination lamp to rotate transversely and vertically, and the rotating tripod head receives a following illumination instruction input by the security monitoring system to drive the spotlight illumination lamp to rotate to irradiate human figures along with the spotlight illumination.
The side part of the fixed base 51 is provided with a wire inlet hole 511, the center of the upper part of the fixed base is provided with a base shaft hole 512, and the base shaft hole is communicated with the wire inlet hole. The wire inlet hole 511 can be fixed with a wire inlet joint, and is connected with an external power line and a signal line through the wire inlet joint.
The support seat 52 comprises a support frame 521 with a hollow center and an upper opening, and a support cover 522 for closing the upper opening; a first rotating shaft hole 523 is formed in the center of the bottom surface of the supporting frame; and second rotating shaft holes 524 are formed in the two opposite side faces of the supporting seat.
The first and second shafts 53 and 55 are both hollow in the axial center.
The rotating head further comprises a support 57, a first belt 58 and a second belt 59. Wherein:
the bracket 57 is fixed to the inner bottom surface 5211 of the support frame, and a bracket hole 571 opposite to the first pivot hole is formed in the center of the bracket. The bracket 57 may be fixed to the inner bottom surface of the support hole by a screw.
The lower end of the first rotating shaft 53 is inserted into the base shaft hole 512 and is connected with the fixed base in a transverse rotating manner, the upper end of the first rotating shaft 53 passes through the first rotating shaft hole 523 and is fixedly connected with the bracket, and the center of the first rotating shaft is opposite to the bracket 571; the first driving motor 54 is vertically fixed on the bracket; the second drive motor 56 is transversely fixed to the bracket.
The first rotating shaft 53 and the base shaft hole 512 can be in transverse rotating connection with the fixed base through a bearing, the outer ring of the bearing is fixedly connected with the base shaft hole, and the first rotating shaft 53 is fixed in the inner ring of the bearing.
A first belt 58 connects the output of the first drive motor and the first shaft. The second belt 59 connects the output of the second drive motor and the second shaft.
The second rotating shaft 55 is inserted into the second rotating shaft hole 524, and a through hole 551 communicating with the center of the second rotating shaft is formed on the side surface of the second rotating shaft in the supporting seat.
The directional sound tube 6 is mainly used for being matched with a spotlight illumination lamp for use, and when the spotlight illumination lamp illuminates a human shape, the directional sound tube emits directional warning sound to warn an intruding person to leave, so that the warning and prevention effects are achieved. The reason why the directional sound tube is provided instead of the general horn is that the directional sound tube can concentrate most of the energy of the sound in the human-shaped direction, that is, the direction of the spotlight, thereby preventing interference with the surroundings. Meanwhile, the directional sound can be used for better deterrence and warning for the invaded people.
The directional sound tube is connected with the rotating holder and is driven by the rotating holder to rotate horizontally and vertically. The directional sound tube and the spotlight lamp rotate synchronously, and the sound emitted by the directional sound tube is focused in the irradiation direction of the spotlight lamp. Therefore, when the spotlight illuminating lamp illuminates the human shape, the directional sound tube synchronously emits directional warning sound along with the human shape to warn an invader, and the spotlight illuminating lamp plays a better role in deterrence and warning.
The directional sound tube 6 comprises a strip-shaped sound tube shell 61 with a hollow center and an opening at one end, a loudspeaker (not shown in the figure) arranged in the sound tube shell and a sound tube cover 62 covering the opening of the sound tube shell; a sound tube shell hole (not shown in the figure) which is communicated with the center of the sound tube shell is formed in the side face of the sound tube shell 61, and two ends of the second rotating shaft are respectively inserted into the lamp shell hole and the sound tube shell hole.
The directional sound tube of the invention realizes the directional emission of sound by utilizing the elongated sound tube shell. The sound that loudspeaker sent reflects in the sound cartridge casing, jets out through the opening of sound cartridge casing at last, because there is a distance between loudspeaker and the opening, the sound is after the multiple reflection, jets out from the opening gathering. In order to enable directional emission of sound, the distance between the horn and the opening of the sound tube housing is at least 5 cm.
In order to facilitate the signal wire and the power wire to enter, and in the process of driving the light-focusing lamp and the directional sound tube to rotate by the rotating holder, the signal wire and the power wire are not influenced by the rotation of the light-focusing lamp and the directional sound tube. Through setting rotary drive to belt drive, and will first pivot 53 and second pivot 55 all set to axial direction center cavity, cooperate the design of support, unable adjustment base, supporting seat, sound tube casing and lamps and lanterns casing again, make power cord and signal line get into the inside of supporting seat through unable adjustment base's entrance hole, the center of first pivot and stake pocket, connect first driving motor and second driving motor. The power line and the signal line enter the center of the second rotating shaft through the line-passing hole 551 of the second rotating shaft and enter the directional sound tube and the inside of the spotlight illumination lamp through the center of the second rotating shaft.
When the mode that the hollow axis of the first rotating shaft is used for wiring is adopted, when the spotlight radiation rotating holder is reset every time, the supporting seat and the lamp are lifted, and the sound tube shell needs to be reset to the initial state, so that the phenomenon that the supporting seat rotates without limit to cause the winding of a power line and a signal line is avoided.
Of course, instead of routing the central axis of the first rotating shaft, a slip ring may be disposed between the first rotating shaft 53 and the base shaft hole 512 to transmit signals, an outer ring of the slip ring is fixedly connected to the base shaft hole, an inner ring of the slip ring is fixedly connected to the first rotating shaft, and the power line and the signal line pass through the outer ring of the slip ring to realize electrical connection. When the lamp is connected in the mode, the support seat rotates without limit, so that the power line and the signal line cannot be wound, the support seat is not reset when the rotating holder is reset, and only the lamp shell and the sound tube shell are reset.
In order to fix the driving circuit board, a fixing frame 572 is further disposed on the bracket 57, and the driving circuit board 573 is fixed on the fixing frame. The driving circuit board is electrically connected with the first driving motor and the second driving motor, receives a following irradiation instruction input by the security monitoring system, and drives the first driving motor and the second driving motor to rotate, so that the spotlight illumination lamp is driven to rotate to follow the spotlight to irradiate the human shape. In order to improve heat dissipation performance, a heat dissipation fan 574 is further disposed on a side surface of the driving circuit board.
In addition, in order to fix the power supply line or the signal line entering the supporting seat and prevent the power supply line or the signal line from being wound with the motor or the rotating shaft, a wire binding plate 575 is further arranged on the fixing frame, and a wire binding hole 576 is arranged on the wire binding plate. The power line and the signal line may be fixed to the line binding plate through the line binding hole by a binding band.
In order to prevent external rainwater from entering the supporting seat or the fixed base through the joint of the supporting seat and the fixed base, a protruding base boss 513 surrounding the base shaft hole is arranged at the upper part of the fixed base 51; the lower part of the support frame 521 is provided with a support frame boss 5212 protruding and sleeved on the base boss. In addition, in order to prevent rainwater from entering the supporting seat, a sealing ring is arranged between the supporting frame and the supporting cover.
The working principle of the invention is as follows: the method comprises the steps of fixing a camera and a spotlight device, carrying out position matching on a video image shot by the camera and the pointing position of the spotlight device, setting a defense arrangement area according to actual conditions, automatically identifying the shape of a person in the video image when the person invades the defense arrangement area, acquiring the position of the shape of the person in the video image in real time, sending a following irradiation instruction according to the position of the shape of the person in the video image, rotating the spotlight lamp to the corresponding pointing position according to the following irradiation instruction after a rotating tripod head of the spotlight device receives the following irradiation instruction, starting the spotlight lamp to irradiate the shape of the person, and driving the spotlight lamp to rotate to follow the spotlight to irradiate the shape of the person. Meanwhile, a directional warning sound is sent out through a directional sound tube which synchronously rotates with the spotlight illumination lamp, and the person who invades is warned to leave.
The invention solves the defect of poor safety caused by manual observation or after-call video recording in the prior art by automatically identifying the human shape in the video image; meanwhile, the position of the human figure in the video image is obtained in real time, a following irradiation instruction is sent according to the position of the human figure in the video image, the spotlight irradiation device is driven to follow the spotlight irradiation human figure according to the following irradiation instruction, and the spotlight irradiation device is used for following the human figure to irradiate, so that an invader is better warned, the invader is warned, the deterrent effect is achieved, the situation is prevented from further developing, and the safety performance is further improved. In addition, by utilizing spotlight irradiation, compared with large-area illumination, the spotlight can play a better deterrent effect, and can reduce interference on users or surrounding users.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A security monitoring method is characterized by comprising the following steps:
acquiring a video image shot by a camera;
identifying a human shape in a video image, acquiring the position of the human shape in the video image in real time, and sending a following irradiation instruction according to the position of the human shape in the video image;
and driving a spotlight device to follow the spotlight to irradiate the human shape according to the follow-irradiation instruction.
2. The security monitoring method according to claim 1, characterized in that:
the security monitoring method further comprises a position matching step, wherein the position matching step comprises the following steps:
segmenting the video image into a plurality of cells;
carrying out position-by-position correspondence on the pointing position of the spotlight device and each divided cell, and storing position corresponding data;
the step of acquiring the position of the human figure in the video image in real time and sending a following irradiation instruction according to the position of the human figure in the video image comprises the following steps: obtaining a corresponding directing position of the human figure corresponding to the spotlight device according to the cell in the video image of the human figure and the position corresponding data, and sending a following irradiation instruction according to the corresponding directing position;
the step of driving the spotlight device to follow the spotlight human shape according to the follow-up irradiation instruction comprises the following steps of: and driving the spotlight device to rotate to the corresponding directional position according to the following irradiation instruction, and irradiating the human shape along with the spotlight.
3. The security monitoring method according to claim 2, characterized in that: the camera is stationary to ensure that the area of the video image captured by the camera is stationary.
4. The security monitoring method according to claim 2, characterized in that: the step of segmenting the video image into a plurality of cells comprises: and carrying out equidistant segmentation on the acquired video image into a plurality of cells.
5. The security monitoring method according to claim 2, characterized in that: the security monitoring method further comprises the steps of selecting a part of cells in the video image to be set as a defense area;
the step of identifying the human shape in the video image is as follows: only the human shape in the defense area in the video image is identified.
6. The security monitoring method according to claim 1, characterized in that: the real-time acquisition of the position of the human figure in the video image comprises the real-time acquisition of the current position of the human figure in the video image and the moving direction of the human figure.
7. The security monitoring method according to claim 1, characterized in that: the spotlight device comprises a spotlight lamp and a rotating tripod head for driving the spotlight lamp to rotate horizontally and vertically, and the rotating tripod head receives the following irradiation instruction to drive the spotlight lamp to rotate to follow the spotlight to irradiate human figures.
8. The security monitoring method according to claim 7, characterized in that: the light gathering irradiation lamp is a spot lamp.
9. The utility model provides a security protection monitored control system which characterized in that: the security monitoring system comprises:
a camera that takes a video image;
the human shape recognition device is connected with the camera, acquires a video image of the camera, recognizes the human shape in the video image, acquires the position of the human shape in the video image in real time, and sends out a following irradiation instruction according to the position of the human shape in the video image;
and the spotlight irradiation device is connected with the human shape recognition device and irradiates the human shape along with spotlight according to the following irradiation instruction of the human shape recognition device.
10. The security monitoring system of claim 9, wherein:
the spotlight irradiation device comprises a spotlight irradiation lamp and a rotating holder for driving the spotlight irradiation lamp to rotate horizontally and vertically;
the security monitoring system further comprises:
an image segmentation module that segments the video image into a plurality of cells;
the position matching module is used for carrying out position-by-position correspondence on the pointing position of the spotlight lamp and each divided cell and storing position corresponding data;
the human shape recognition device obtains a corresponding pointing position of the human shape corresponding to the spotlight lamp according to the cell in the video image where the human shape is located and the position corresponding data, and sends out a following irradiation instruction according to the corresponding pointing position; and the rotating cradle head receives the following irradiation instruction to drive the spotlight irradiation lamp to rotate to the corresponding pointing position and irradiate the human shape following the spotlight.
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Application publication date: 20201013 |