CN208971623U - A kind of video camera with the angle detection function - Google Patents
A kind of video camera with the angle detection function Download PDFInfo
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- CN208971623U CN208971623U CN201821780866.9U CN201821780866U CN208971623U CN 208971623 U CN208971623 U CN 208971623U CN 201821780866 U CN201821780866 U CN 201821780866U CN 208971623 U CN208971623 U CN 208971623U
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- 238000004891 communication Methods 0.000 claims abstract description 22
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Abstract
The utility model discloses a kind of video camera with the angle detection function, the monitor camera does not depend on the restriction of cradle head control control mode, and has the function of itself real-time dynamic angle detection and determine.The video camera mainly includes sensor unit, data processing unit, image acquisition units, image processing unit, communication unit and shell.The video camera acquires the dynamic angle information of the video camera using three-axis gyroscope sensor, with detection fast speed, the features such as detection accuracy is higher, can real-time monitoring video camera real-time angular, dynamic target tracking monitoring and image recognition positioning field have a wide range of applications.
Description
Technical field
The utility model relates to a kind of video camera with the angle detection function, which is related to sensor data acquisition
And the fields such as data processing.
Background technique
Monitor camera is the primary video equipment of safety defense monitoring system.With digital image processing techniques and pattern-recognition
The development of technology, the application range further expansion of monitor camera.Also more it is applied in coal mine underground monitoring video camera
The fields such as coal is exploited automatically, personnel and monitoring of tools position.Monitor camera is generally fixedly installed on holder, by holder control
System control transformation angle processed, to realize the Image Acquisition to different zones.Since holder uses open loop control mode, monitoring
Center can control cloud platform rotation, however can not obtain the real-time angular of monitor camera, even if having closed loop control using special
The holder of system, when video camera forces rotation manually by field personnel or changed angle by other external forces, in monitoring
The heart can not equally obtain the accurate real-time angular of monitor camera, due to can not accurately obtain the real-time angular of monitor camera,
Monitoring center just can not accurately determine the monitoring area of acquired image, therefore can not be by image pattern recognition to monitoring
Target is accurately positioned, and the development and application of monitoring technology are seriously restrict.So one kind is needed not depend on holder control in a hurry
System processed, the monitor camera with self-view real-time detection function.
Utility model content
The utility model aim is to provide a kind of video camera with the angle detection function.The camera shooting has with following
Beneficial effect:
1. solving the problems, such as that existing video camera can not accurately obtain the real-time angular of monitor camera, holder can not depended on
The features such as real-time angular of the automatic output monitoring video camera of control system has detection fast speed, and detection accuracy is higher.
2. having the function of the superposition of camera angle data real-time video and angle-data transmission, accurately sentence for monitoring center
The monitoring area of fixed acquired image provides service.
3. technical support is provided be accurately positioned to monitoring objective by image pattern recognition, in dynamic mesh
Mark tracing and monitoring and framing field have a wide range of applications.
The video camera includes sensor unit, data processing unit, image acquisition units, image processing unit, communication
Unit and shell；The sensor unit is used for bearing data when acquisition camera attitudes vibration, and sensor unit at least wraps
Include a three-axis gyroscope；The data processing unit is responsible for handling the collected data of gyroscope institute, is imaged
Real-time angular data when machine attitudes vibration；Described image acquisition unit is responsible for video image acquisition, including camera lens and photosensitive core
Piece, camera lens are used for light signal collection, and sensitive chip is for converting optical signal into electric signal, using CCD or CMOS photosensitive element；
Described image processing unit is responsible for video data digital, by the angle-data obtained by data processing unit with character style
It is added in video image, and superimposed encoding video pictures is compressed and are exported；Communication unit is responsible for image processing unit
The angle-data of coding compressed video image and the data processing unit output of output is uploaded to receiving device.
1. the video camera further comprises: the sensitized lithography of the sensitive chip and the central axis of camera housing hang down
Directly.
2. the video camera further comprises: it need to be determined according to installation environment when video camera is installed and refer to three-dimensional system of coordinate,
Reference as video camera pivot offset angle；Include with reference to three-dimensional system of coordinate method of determination, setting Z axis perpendicular to ground to
On, X-axis installs metope perpendicular to the video camera, and Y-axis is parallel to the video camera installation metope.
3. the video camera further comprises: the two of them shaft of the three-axis gyroscope and the two of the sensitive chip
A side is parallel, and the third shaft of three-axis gyroscope is vertical with the sensitized lithography of sensitive chip；Turned with three of three-axis gyroscope
Three-dimensional system of coordinate reference axis of the axis as video camera body.
4. the video camera further comprises: the video camera needs to adjust the angle when installing and using, and makes according to three axis accelerometer
The video camera body three-dimensional system of coordinate that three shafts of instrument determine and each coordinate of reference three-dimensional system of coordinate determined according to installation environment
Axis direction is consistent, makes 0 degree of initial offset angle in three planes.
5. the video camera further comprises: the video camera is added to the angle in video image by image processing unit
Degree evidence and include that video camera body is flat in reference three-dimensional system of coordinate XOY, XOZ, YOZ by the angle-data that communication unit exports
Deviation angle on face.
6. the video camera further comprises: the video camera includes analog video output port.
7. the video camera further comprises: communication unit uses wire communication module or wireless communication module, for having
Gauze network or wireless communication.
8. the video camera further comprises: the video camera further includes power circuit, is provided for each unit equipment component
It supports.
Detailed description of the invention
Fig. 1 camera function structural schematic diagram with the angle detection function.
The three-dimensional system of coordinate schematic diagram of Fig. 2 video camera with the angle detection function.
Fig. 3 video camera body with the angle detection function and reference three-dimensional system of coordinate angle schematic diagram.
Each axial schematic diagram of Fig. 4 three-axis gyroscope.
Fig. 5 camera operation flow chart with the angle detection function.
Specific embodiment
In the video camera with the angle detection function embodiment as shown in Figure 1, comprising:
1. sensor unit (101), the three-axis gyroscope sensor fast using reaction speed, detection accuracy is high, can be used
The MPU3050 three-axis gyroscope chip of InvenSense company production.The chip characteristics be motion sensing range it is wide, by 250 to
2000 °/sec, susceptibility is higher, and 1% susceptibility is calibrated to before factory, and signal collected is digital signal, collection result
Data processing unit (102) are transferred to by I2C serial communication mode, need measurement three-axis gyroscope sensor axially inclined before use
Shifting degree compensates final result according to degrees of offset.
2. data processing unit (102) passes through for handling the angular rate signal obtained by sensor unit (101)
Superposition obtains certain moment relative to three axially direction angles.The MSP430F147 monolithic of data processor selection TI company
Machine.16 risc architectures of the model have 32k Flash, 1kRAM；And there are 5 kinds of low-power consumption modes.Three-axis gyroscope sensing
SCL with the SDA pin of device can connect two standard I/O interfaces of MSP430F147 processor plus pull-up resistor, pass through processor
Control generates clock signal and realizes I2C serial data communication.Processor can also be realized by FPGA.
3. image processing unit (103), for handling image acquisition units (104) acquired image information, using DSP
Processor and OSD chip, dsp processor is for being compressed data and being handled, and OSD chip is for obtaining data processor
Angle-data be added in image.
4. image acquisition units (104), including camera lens and sensitive chip, camera lens is used for light signal collection, and sensitive chip is used
In converting optical signal into electric signal, using CCD or CMOS photosensitive element.
5. wire communication module or wireless communication module can be used in communication unit (105), it to be used for cable network and wireless network
Network communication, by the angle of the compressed video data of image acquisition units (104) output and data processing unit (102) output.
6. auxiliary circuit (106), in addition to above-mentioned each unit equipment, device further includes the auxiliary circuits such as power circuit
And related elements, support is provided for each unit equipment component.
7. shell (107) is such as used in underground coal mine, the explosion-resistant enclosure for meeting downhole anti-explosion standard need to be used.
In the specific embodiment of the video camera with the angle detection function, three-dimensional system of coordinate and angle definition reference
Fig. 2, Fig. 3 and Fig. 4:
1. refer to Fig. 2, (201) are with reference to three-dimensional system of coordinate, and (202) are the three-dimensional system of coordinate of video camera body, in this example
It faces upward with reference to three-dimensional system of coordinate Z axis perpendicular to ground, X-axis is parallel to the video camera installation metope, and Y-axis is perpendicular to the camera shooting
It is outside that machine installs metope.Two coordinate system origin can not be overlapped.
2. referring to Fig. 3, (301) are initial offset angle of the video camera body in XOY plane, and (302) are video camera body in XOZ
The initial offset angle of plane, (303) are initial offset angle of the video camera body in YOZ plane.When specific installation is implemented, it should use up
Amount keeps video camera body three-dimensional system of coordinate consistent with reference to each change in coordinate axis direction of three-dimensional system of coordinate, makes initial inclined in three planes
Moving angle is 0 degree.
3. referring to Fig. 4, (401) are three-axis gyroscope chip, and shaft is respectively Xt, Yt, Zt, when it is implemented, video camera
Body three-dimensional system of coordinate should be determined with reference to three-axis gyroscope shaft.
The video camera specific implementation step with the angle detection function is as shown in Figure 5:
1. sensor unit obtains the instantaneous angular velocity α in three axial directionsX,αY, αZ.
2. data processing unit is to all α since updating initial offset angleX,αY、αZData are overlapped processing, if
Video camera body is respectively A1, A2, A3 in the initial offset angle of reference three-dimensional system of coordinate XOY, XOZ, YOZ plane, then video camera
Body is A1+ ∫ a in the deviation angle of XOY planeZdt；Video camera body is A2+ ∫ a in the deviation angle of XOZ planeYdt；Video camera
Body is A3+ ∫ a in the deviation angle of YOZ planeXdt；T has been the accumulated time since updating initial offset angle in formula；Complete meter
By the deviation angle being calculated as initial offset angle after calculation.
3. image acquisition units acquire video image information, and video image information is transferred to image processing unit.
4. image processing unit handles the moment collected video image information, and angle-data is added to video figure
As in and carry out compressed encoding.
5. communication unit transmits the video image data after compressed encoding and the angle-data with temporal information
To receiving device.
Claims (9)
1. a kind of video camera with the angle detection function, it is characterised in that: the video camera includes sensor unit, at data
Manage unit, image acquisition units, image processing unit, communication unit and shell；The sensor unit is used for acquisition camera
Bearing data when attitudes vibration, sensor unit include at least a three-axis gyroscope；Responsible pair of the data processing unit
The collected data of gyroscope institute are handled, and real-time angular data when video camera attitudes vibration are obtained；Described image acquisition
Unit is responsible for video image acquisition, including camera lens and sensitive chip, and camera lens is used for light signal collection, and sensitive chip is for believing light
Number it is converted into electric signal, using CCD or CMOS photosensitive element；Described image processing unit is responsible for video data digital, will lead to
It crosses the angle-data that data processing unit obtains to be added in video image with character style, and by superimposed video image coding
Code compression output；Communication unit is responsible for the coding compressed video image for exporting image processing unit and data processing unit output
Angle-data be uploaded to receiving device.
2. video camera as described in claim 1, it is characterised in that: the sensitized lithography of the sensitive chip and camera housing
Central axis upright.
3. video camera as described in claim 1, it is characterised in that: need to be determined according to installation environment when video camera is installed and refer to three
Tie up coordinate system, the reference as video camera pivot offset angle；It include that setting Z axis is vertical with reference to three-dimensional system of coordinate method of determination
It faces upward in ground, X-axis installs metope perpendicular to the video camera, and Y-axis is parallel to the video camera installation metope.
4. video camera as described in claim 1, it is characterised in that: the two of them shaft and the sense of the three-axis gyroscope
Two sides of optical chip are parallel；Using three shafts of three-axis gyroscope as the coordinate of itself three-dimensional system of coordinate of video camera body
Axis.
5. video camera as described in claim 1, it is characterised in that: the video camera needs to adjust the angle when installing and using, and makes root
The video camera body three-dimensional system of coordinate determined according to three shafts of three-axis gyroscope and the three-dimensional seat of the reference determined according to installation environment
Each change in coordinate axis direction of mark system is consistent, makes 0 degree of initial offset angle in three planes.
6. video camera as described in claim 1, it is characterised in that: the video camera is added to video by image processing unit
Angle-data in image and by the angle-data that communication unit exports include, video camera body reference three-dimensional system of coordinate XOY,
Deviation angle in XOZ, YOZ plane.
7. video camera as described in claim 1, it is characterised in that: communication unit uses wire communication module or radio communication mold
Block is used for cable network or wireless communication.
8. video camera as described in claim 1, it is characterised in that: the video camera further includes power circuit, is set for each unit
Standby element provides support.
9. video camera as described in claim 1, it is characterised in that: the video camera includes analog video output port.
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| CN201821780866.9U CN208971623U (en) | 2018-10-31 | 2018-10-31 | A kind of video camera with the angle detection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109167902A (en) * | 2018-10-31 | 2019-01-08 | 中国矿业大学(北京) | A kind of video camera with the angle detection function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109167902A (en) * | 2018-10-31 | 2019-01-08 | 中国矿业大学(北京) | A kind of video camera with the angle detection function |
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