CN108332718B - Structured light information acquisition system - Google Patents
Structured light information acquisition system Download PDFInfo
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- CN108332718B CN108332718B CN201810282316.2A CN201810282316A CN108332718B CN 108332718 B CN108332718 B CN 108332718B CN 201810282316 A CN201810282316 A CN 201810282316A CN 108332718 B CN108332718 B CN 108332718B
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- structured light
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- image acquisition
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- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
- G01C11/02—Picture taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2612—Data acquisition interface
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Multimedia (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Projection Apparatus (AREA)
- Studio Devices (AREA)
- Image Input (AREA)
Abstract
The invention discloses a structured light information acquisition system, which comprises: projection equipment, a plurality of image acquisition devices, controller, lower computer, host computer and USB concentrator, projection equipment connection director, every image acquisition device, controller, lower computer and host computer all connect the USB concentrator, every image acquisition device still connects the lower computer. The beneficial effects of the invention are as follows: the control instruction is sent to the lower computer through the upper computer, the lower computer is forwarded to the controller, the lower computer controls the image acquisition device, the controller controls the projection equipment, projection and photographing time can be regulated and controlled according to actual conditions, and the exposure time of the image acquisition device is prolonged, all the components are connected through the USB hub, connecting cables among all the components are reduced, and the whole system structure is more compact.
Description
Technical Field
The invention relates to the technical field of structured light acquisition, in particular to a structured light information acquisition system.
Background
At present, a three-dimensional model is generated by using structured light, and an electronic micromirror of TI is used as a structured light projection element, the synchronization of structured light projection and camera photographing is completed by a controller chip of TI, and the structured light projection time and the camera photographing time are completely synchronized, so that two problems are caused: 1. the projection and the camera photographing are started at the same time, and a certain time is required from the start of projection to normal display, so that a ghost image may be generated in the photograph. 2. The projection time is as long as the photographing time of the camera, and the exposure time of the camera cannot be adjusted according to the illumination intensity.
Disclosure of Invention
The invention provides a structured light information acquisition system, which solves the technical problems in the prior art.
The technical scheme for solving the technical problems is as follows:
a structured light information acquisition system comprising: the projection equipment is connected with the controller, each image acquisition device, the controller, the lower computer and the upper computer are all connected with the USB concentrator, and each image acquisition device is also connected with the lower computer;
the upper computer is used for sending a control instruction to the lower computer through the USB hub;
the lower computer is used for sending a projection control instruction to the controller through the USB hub according to the received control instruction and directly sending acquisition instructions to the plurality of image acquisition devices;
the controller is used for sending a projection instruction to the projection equipment through the USB hub according to the received projection control instruction;
the projection equipment is used for projecting the structured light to the target object according to the received projection instruction;
the image acquisition devices are used for acquiring images of the target object with the structured light according to the received acquisition instructions, acquiring image information of the target object with structured light information, and transmitting the image information of the target object to the lower computer through the USB hub;
the lower computer is used for sending the received target object image information to the upper computer through the USB hub.
The beneficial effects of the invention are as follows: the control instruction is sent to the lower computer through the upper computer, the lower computer is forwarded to the controller, the lower computer controls the image acquisition device, the controller controls the projection equipment, projection and photographing time can be regulated and controlled according to actual conditions, and the exposure time of the image acquisition device is prolonged, all the components are connected through the USB hub, connecting cables among all the components are reduced, and the whole system structure is more compact.
On the basis of the technical scheme, the invention can be improved as follows.
Preferably, the USB hub comprises: the host computer includes: and the TTL interfaces of each image acquisition device are connected with one TTL interface of the lower computer.
Preferably, the USB hub is a 3304 model USB hub.
Preferably, the lower computer is a single chip microcomputer.
Preferably, the lower computer is a singlechip of STM32F103 type.
Preferably, the controller is a model DLPC350 controller.
Preferably, the upper computer is a computer.
Preferably, the image acquisition device is a camera.
Drawings
Fig. 1 is a schematic structural diagram of a structured light information acquisition system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a structured light information acquisition system according to another embodiment of the present invention.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 1, a structured light information acquisition system includes: the projection equipment 1, a plurality of image acquisition devices 2, a controller 3, a lower computer 4, an upper computer 5 and a USB hub 6, wherein the projection equipment 1 is connected with the controller 3, each image acquisition device 2, the controller 3, the lower computer 4 and the upper computer 5 are all connected with the USB hub 6, and each image acquisition device 2 is also connected with the lower computer 4;
the upper computer 5 is used for sending a control instruction to the lower computer through the USB hub 6;
the lower computer 4 is used for sending projection control instructions to the controller 3 through the USB hub 6 according to the received control instructions, and directly sending acquisition instructions to the plurality of image acquisition devices 2;
the controller 3 is used for sending a projection instruction to the projection equipment 1 through the USB hub 6 according to the received processed control instruction;
the projection device 1 is used for projecting structural light to a target object according to the received projection instruction;
the plurality of image acquisition devices 2 are used for carrying out image acquisition on a target object with structured light according to the received acquisition instruction, acquiring target object image information with structured light information, and sending the target object image information to the lower computer 4 through the USB hub 6;
the lower computer 4 is used for transmitting the received target object image information to the upper computer 5 through the USB hub 6.
The upper computer sends a control instruction to the lower computer, the lower computer forwards the control instruction to the controller, the lower computer controls the image acquisition device, the controller controls the projection equipment, projection and photographing time and exposure time of the image acquisition device can be regulated and controlled according to actual conditions, the upper computer distributes addresses to the USB hub, the components are connected through the USB hub, connecting cables among the components are reduced, and the whole system is more compact in structure.
As shown in fig. 2, the USB hub 6 includes: the plurality of USB interfaces, the lower computer 4 includes: the device comprises a plurality of TTL interfaces, wherein the USB interface of each image acquisition device 2, a controller 3, a lower computer 4 and an upper computer 5 are respectively connected with one USB interface of a USB hub 6, and the TTL interface of each image acquisition device 2 is connected with one TTL interface of the lower computer 4.
The data flow is that the TTL interface of the lower computer 4 outputs data signals, clock signals and control signals to the image acquisition device 2. The lower computer 4 acquires the image information of the target object from the image acquisition device 2 via the USB interface of the USB hub 6. The lower computer 4 sends a time sequence signal to the controller 3 through the USB interface of the USB hub 6, so that the controller 3 controls the projection equipment 1 according to the time sequence signal, and the lower computer 4 performs information interaction with the upper computer 5 through the USB interface of the USB hub.
Preferably, the USB hub is a model 3304 USB hub.
Preferably, the lower computer is a single chip microcomputer.
Preferably, the lower computer is a singlechip of STM32F103 type.
Preferably, the controller is a model DLPC350 controller.
Preferably, the upper computer is a computer.
Preferably, the image acquisition device is a camera.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (8)
1. A structured light information acquisition system, comprising: the projection equipment is connected with the controller, each image acquisition device, the controller, the lower computer and the upper computer are all connected with the USB concentrator, and each image acquisition device is also connected with the lower computer;
the upper computer is used for sending a control instruction to the lower computer through the USB hub;
the lower computer is used for sending a projection control instruction to the controller through the USB hub according to the received control instruction and directly sending acquisition instructions to the plurality of image acquisition devices; the device is also used for adjusting photographing time and exposure time of the image acquisition device;
the controller is used for sending a projection instruction to the projection equipment through the USB hub according to the received projection control instruction; also used for adjusting the projection time;
the projection equipment is used for projecting the structured light to the target object according to the received projection instruction;
the image acquisition devices are used for acquiring images of the target object with the structured light according to the received acquisition instructions, acquiring image information of the target object with structured light information, and transmitting the image information of the target object to the lower computer through the USB hub;
the lower computer is used for sending the received target object image information to the upper computer through the USB hub.
2. A structured light information acquisition system as claimed in claim 1 wherein said USB hub comprises: the host computer includes: and the TTL interfaces of each image acquisition device are connected with one TTL interface of the lower computer.
3. A structured light information acquisition system as claimed in claim 2 wherein said USB hub is a model 3304 USB hub.
4. The structured light information collection system of claim 1 wherein the lower computer is a single-chip microcomputer.
5. The structured light information collection system according to claim 4, wherein the lower computer is a single-chip microcomputer of STM32F103 type.
6. A structured light information acquisition system as claimed in any one of claims 1 to 5 wherein said controller is a model DLPC350 controller.
7. A structured light information collection system according to any one of claims 1 to 5 wherein said host computer is a computer.
8. A structured light information acquisition system as claimed in any one of claims 1 to 5 wherein said image acquisition device is a camera.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102918 | 2018-02-01 | ||
| CN201820180000 | 2018-02-01 | ||
| CN2018101029185 | 2018-02-01 | ||
| CN2018201800008 | 2018-02-01 |
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| Publication Number | Publication Date |
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| CN108332718A CN108332718A (en) | 2018-07-27 |
| CN108332718B true CN108332718B (en) | 2024-04-05 |
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| CN201820467240.6U Active CN207936962U (en) | 2018-02-01 | 2018-03-30 | A kind of structure light information acquisition system |
| CN201810282316.2A Active CN108332718B (en) | 2018-02-01 | 2018-03-30 | Structured light information acquisition system |
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| CN201820467240.6U Active CN207936962U (en) | 2018-02-01 | 2018-03-30 | A kind of structure light information acquisition system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108332718A (en) | 2018-07-27 |
| CN207936962U (en) | 2018-10-02 |
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