CN109920365A - A kind of system and method for display human eye vision evaluation sighting target - Google Patents
A kind of system and method for display human eye vision evaluation sighting target Download PDFInfo
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Abstract
The present invention discloses a kind of display human eye vision evaluation view calibration method, and be used to weigh valuation thing of weighing, includes weighing unit, is used to obtain the weight data of the thing of weighing；Speech recognition module, it is used to obtain by outside offer about the thing of weighing title or the voice data of code, according to the vocoded data library for being built in the speech recognition module, the voice data is converted into corresponding coded data by the speech recognition module；And master cpu, it is used to receive the weight data from the weighing unit and the coded data from the speech recognition module, according to the weight data and the coded data, the master cpu obtains the valuation data of the thing of weighing.The invention also discloses the application methods of above-mentioned electronic scale system.The present invention has the advantages that passing through the method input encoded data of speech recognition, greatly reduce the workload of operator, improves working efficiency.
Description
Technical field
The present invention relates to a kind of system and methods of display human eye vision evaluation sighting target.
Background technique
Electronic scale system for places such as supermarket and hypermarket is essential for dissipating the cargo claimed.Current electricity
Sub- scale system is often using the side for being manually entered cargo coding (4-5 bit digital form), included printer printing thing of weighing label
Method.The disadvantage is that, for weigh personnel requirement it is relatively high, it is necessary first to it is pre-job training thing of weighing coding memory,
Secondary to need frequently to input a variety of different codings, physical strength and memory to people are all greatly to test.It is frequent to reduce
It is manually entered, there is dealer's electron scale system to work out shortcut key, and this method is simply possible to use in the few occasion of weighing species.
Therefore, it would be highly desirable to designing a kind of can quickly input the method for thing of weighing code or title to solve this problem.
Summary of the invention
Object of the present invention is to overcome the problems, such as continually to be manually entered cargo coding in the prior art, provide a kind of novel
Electronic scale system for object weighing.
In order to realize the purpose, technical scheme is as follows: a kind of system of display human eye vision evaluation sighting target,
It is characterized in that, including display module, display control module and power module composition；Power module is respectively to display module
And display control module power supply；Display control module receives the control command from host computer, according to the parsing knot of control command
Fruit calls the image data of storage inside, and exports after image data is encoded and show to display module.
A kind of system of display human eye vision evaluation sighting target, which is characterized in that display control module has 16*16 size
The LED screen of (32*32 or 64*64) carries out the illumination driving of sighting target.
Display control module has ARM and FPGA.
A kind of display human eye vision evaluation view calibration method, which is characterized in that it include following steps,
System described in any one of claims 1 to 3 is provided；
Software is divided into upper computer software, ARM embedded software and FPGA program firmware；Upper computer software realizes human-computer exchange control
Switching display image；ARM embedded software, which is realized, receives upper computer software order, parses the command and according to parsing result
Output is to FPGA after calling respective image to carry out recombination coding；FPGA firmware program receives the data that the parallel port ARM has been transmitted across, and
Output after data progress serial code is shown to LED display module.
Upper computer software generates alternating interface between man and computer, and user generates discrete magnitude signal by mouse interface, is sent to processing
Module, processing module is received data encoding after mouse message and is handled, and the result after identification is sent to communication module,
Communication module sends control data to LED display system after being encoded according to communications protocol.
ARM embedded software is mainly to receive the RS422 control signal or switch discrete magnitude signal number that host computer is sent
According to, after being decoded identification to data, called in dynamic memory by image data of the image selection processing module to storage,
After image encodes, be sent to FPGA system by protocol conversion, at the same image selection processing module send control signal to
FPGA is controlled.
FPGA firmware software mainly receives ARM embedded software and sends image parallel port data-signal and discrete control signal
Data after identifying to data, according to certain sequence after being decoded by image decoding processing module to image data, are deposited
It stores up in dynamic storing module, protocol code module recompiles the data in dynamic memory, and according to serial communication
Protocol format and control signal command are exported to LED display module.
Figure is identified by choosing different shape E, Landau ring, three rod figures etc. that host computer has stored, driving LED is corresponding
Lamp bead is lighted, and changes brightness by changing driving current.
Compared with prior art, advantages of the present invention at least that: pass through the method input encoded data of speech recognition, phase
For the prior art, greatly reduce the workload of operator, improves working efficiency.
Detailed description of the invention
Fig. 1 is a kind of LED screen Hardware Design schematic diagram.The present invention is made specifically with reference to the accompanying drawings and examples
It is bright.
In Fig. 1: main there are four modules, including task system, display control module, power module and display module.System
System is communicated by RS422 bus with outside, and the display control command that airborne task system is sent, display control module are received
It is called after reception according to command analysis and is previously stored image data in systems, and after image data is encoded, output
It is shown to display module.
Fig. 2 system architecture schematic diagram: 1 is USART, includes three parts: utilizing independent ARM(Fig. 2-3) and FPGA(figure
2-4) connected using parallel bus to improve the speed of service.Design difficulty is the picture signal conversion module in FPGA.
The built-in video memory in FPGA.For control information, image information is converted.Original is stored in ARM
Image information be read out or modify, and be output to the image video memory area of outgoing FPGA.Picture signal conversion in FPGA
Built-in video memory data are carried out transformation and refreshed in real time to external LED display by module.
Use USART(Fig. 2-1) and EXP_IO(Fig. 2-2) two ways generates to the control signal of system.Parsing control
Signal, and generate control information.
It is shown using muti-piece or one piece of LED screen (Fig. 2-5).External power supply and inside 5V power supply swap (figure
2-6).
Fig. 3 is exploitation machine software external interface figure.It is alternating interface between man and computer that upper computer software, which mainly generates, and user passes through mouse
Tag splice mouth generates discrete magnitude signal, is sent to processing module, and processing module is received data encoding after mouse message and handled,
And the result after identification is sent to communication module, communication module sent after being encoded according to communications protocol control data to
LED display system.
Fig. 4 is ARM embedded software external interface figure.ARM embedded software is mainly the RS422 for receiving host computer and sending
Signal or switch discrete magnitude signal data are controlled, after being decoded identification to data, by image selection processing module to storage
The image data deposited is called in dynamic memory, after image encodes, is sent to FPGA system by protocol conversion, is schemed simultaneously
It is controlled as selection processing module sends control signal to FPGA.
Fig. 5 is FPGA firmware software external interface figure.FPGA firmware software mainly receives ARM embedded software and sends figure
As parallel port data-signal and discrete control signal data, after being identified to data, by image decoding processing module to image
Data be decoded after according to certain sequence, store into dynamic storing module, protocol code module is to the number in dynamic memory
It exports according to being recompiled, and according to serial communication protocol format and control signal command to LED display module.
Specific implementation method
Below by specific implementation method combination attached drawing, invention is further described in detail.
Referring to Figure 1, as shown in the figure for using a kind of display human eye vision evaluation view calibration method.A kind of display human eye view
Feel evaluation sighting target LED mark screen develop, system external portion bus interface without technical requirements, fix tentatively for RS422 bus interface it is same
Host computer crosslinking, main chief component are display module, display control module, power module, system acquisition external electrical
Source.System is communicated by RS422 bus with outside, and the display control command that airborne task system is sent, display control are received
The image data being previously stored in systems is called according to command analysis after the reception of molding block, and image data is encoded
Afterwards, output is shown to display module.The illumination of sighting target is carried out using the LED screen of 16*16 size (32*32 or 64*64)
Driving.
System is drive module using the High-speed I/O of FPGA, and it is main logic unit that data dispatch and control, which use ARM,.
ARM is connected with FPGA using parallel bus to improve the speed of service.System directly reads image data from ARM, and to FPGA
In image matrix transformation and picture signal conversion module system architecture refreshed.
Software scenario is as follows: LED display system software is divided into upper computer software, ARM embedded software and FPGA program
Firmware.Upper computer software realizes human-computer exchange control switching display image；ARM embedded software mainly realizes that reception host computer is soft
Part order, output is to FPGA after parsing the command and calling respective image to carry out recombination coding according to parsing result；FPGA
Firmware program receives the data that the parallel port ARM has been transmitted across, and gives LED display module to carry out output after data progress serial code
Display.It is alternating interface between man and computer that upper computer software, which mainly generates, and user generates discrete magnitude signal by mouse interface, is sent to place
Manage module, processing module is received data encoding after mouse message and handled, and the result after identification is sent to communication mould
Block, communication module send control data to LED display system after being encoded according to communications protocol.ARM embedded software is main
It is to receive the RS422 control signal or switch discrete magnitude signal data that host computer is sent, after being decoded identification to data, leads to
It crosses image selection processing module to call in dynamic memory the image data of storage, after image encodes, by protocol conversion
It is sent to FPGA system, while image selection processing module sends control signal and controlled to FPGA.FPGA firmware software master
If receiving ARM embedded software sends image parallel port data-signal and discrete control signal data, after being identified to data,
It according to certain sequence after being decoded by image decoding processing module to image data, stores into dynamic storing module, association
View coding module recompiles the data in dynamic memory, and according to serial communication protocol format and control signal command
It exports to LED display module.Figure is identified by choosing different shape E, Landau ring, three rod figures etc. that host computer has stored, is driven
The dynamic corresponding lamp bead of LED is lighted, and changes brightness by changing driving current.
Even light is carried out to LED screen using equal tabula rasa in LED screen upper surface.So that the uniform light that LED screen issues.
Implementation method of the invention is only expressed above, and the description thereof is more specific and detailed, but and cannot therefore understand
For the limitation to patent of invention range.It should be pointed out that for those of ordinary skill in the art, not departing from this hair
Under the premise of bright design, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.Therefore, this hair
The scope of protection shall be subject to the appended claims for bright patent.
Claims (8)
1. a kind of system of display human eye vision evaluation sighting target, which is characterized in that include display module, display control module
And power module composition；Power module respectively powers to display module and display control module；Display control module reception comes from
The control command of host computer, according to the parsing result of control command call storage inside image data, and by image data into
It exports after row coding and is shown to display module.
2. a kind of system of display human eye vision evaluation sighting target according to claim 1, which is characterized in that display control mould
Block has the LED screen of 16*16 size (32*32 or 64*64), carries out the illumination driving of sighting target.
3. a kind of system of display human eye vision evaluation sighting target according to claim 1, which is characterized in that display control mould
Block has ARM and FPGA.
4. a kind of display human eye vision evaluation view calibration method, which is characterized in that it include following steps,
System described in any one of claims 1 to 3 is provided；
Software is divided into upper computer software, ARM embedded software and FPGA program firmware；Upper computer software realizes human-computer exchange control
Switching display image；ARM embedded software, which is realized, receives upper computer software order, parses the command and according to parsing result
Output is to FPGA after calling respective image to carry out recombination coding；FPGA firmware program receives the data that the parallel port ARM has been transmitted across, and
Output after data progress serial code is shown to LED display module.
5. a kind of display human eye vision evaluation view calibration method according to claim 4, which is characterized in that upper computer software
Alternating interface between man and computer is generated, user generates discrete magnitude signal by mouse interface, is sent to processing module, processing module receives
It by data encoding and is handled after mouse message, and the result after identification is sent to communication module, communication module is assisted according to communication
View sends control data to LED display system after being encoded.
6. a kind of display human eye vision evaluation view calibration method according to claim 4, which is characterized in that ARM is embedded
Software is mainly to receive the RS422 control signal or switch discrete magnitude signal data that host computer is sent, and is decoded to data
It after identification, is called in dynamic memory by image data of the image selection processing module to storage, after image encodes, is passed through
Protocol conversion is sent to FPGA system, while image selection processing module sends control signal and controlled to FPGA.
7. a kind of display human eye vision evaluation view calibration method according to claim 4, which is characterized in that FPGA firmware is soft
Part mainly receives ARM embedded software and sends image parallel port data-signal and discrete control signal data, knows to data
After not, according to certain sequence after being decoded by image decoding processing module to image data, dynamic storing module is arrived in storage
In, protocol code module recompiles the data in dynamic memory, and believes according to serial communication protocol format and control
Number order output to LED display module.
8. a kind of display human eye vision evaluation view calibration method according to claim 4, which is characterized in that on choosing
The mark figure such as different shape E, Landau ring, three rod figures that position machine has stored, the driving corresponding lamp bead of LED are lighted, and change is passed through
Driving current changes brightness in turn.
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Application publication date: 20190621 |