A kind of method and device of automatic detection 4K2K product master control boradTechnical field
The present invention relates to the checkout equipment technical field of product master control borad, especially relate to a kind of method and device of automatic detection 4K2K product master control borad.
Background technology
Along with the user to the improving constantly of multimedia display product image quality, the televisors such as super large screen, ultra high-definition from we life also more and more close to.Such as Sony, Toshiba, LG, Samsung, Hisense, Haier, Skyworth, TCL, Konka, Changhongs etc. both at home and abroad each large TV producer are released the ultra high-definition televisor of the 4K2K interface of various models this year, also have each large liquid crystal panel manufacturer such as group to create photoelectricity, Youda, Samsung, Sharp Corp releases the 4K2K liquid crystal panel of different size, be applied in the various multimedia display products, ultra high-definition 4K2K multimedia display product is finished the transmission of super large data volume with the brand-new data transfer mode of V-BY-ONE, it seems that at present V-BY-ONE is the development trend of a technology, follow-uply have more product and do ultra high-definition and show, even higher resolution.
V-BY-ONE is the new data transfer mode that has THine company to propose, and the transmission mode of similar LVDS, eDP or iDP is mainly transmitted by a pair of differential signal.
The meaning of V-BY-ONE interface is " video by one ", namely transmit LVDS or TTL signal by " single line ", popular saying is exactly to have reduced PCB layout, especially the application on large-size screen monitors, for example 4K2K60Hz TV gives me a little screen with 96 of LVDS line needs, but give me a little screen with the v-by-one line, only need 18 lines; 4K2K120Hz TV needs 192 with the LVDS line and gives me a little screen, but only needs 34 lines with the words of v-by-one line, can greatly reduce like this problem on PCB layout, but also can reduce the interference problem of EMI/EMC.
The composition of 4K2K product is shown in Figure 1, and 4K2K multimedia display product is comprised of power module, 4K2K product master control borad, 4K2K display panel, voice output, input media; Power module finish by the input of outside 110V/220V alternating current convert to the required road 12V of 4K2K master control borad 5V 3.3V the DC voltage of 24V, be supplied to the 4K2K master control borad, the 4K2K master control borad can be by various input terminals such as AV, YPBPR, HDMI, TV, the input of the signal such as SCART or VGA, after decoding is processed through 4K2K, image section is by the display panel demonstration image of V-BY-ONE interface output with the V-BY-ONE interface, by the voice output output audio signal to loudspeaker power amplifier etc., finish sound signal output, can also respond input media such as touch panel simultaneously, keyboard, the input command of mouse is carried out corresponding function.
At present, show that for band V-BY-ONE interface multimedia detection method and the checkout equipment of product master control borad (PCBA) are: for example with the liquid crystal display television core board of V-BY-ONE interface, ultra high-definition projector machine master control borad, detection method is directly to connect the display screen with the V-BY-ONE interface with V-BY-ONE interface product master control borad to be identified by artificial naked eyes at present, the method is subject to the duty when detecting workman's testing product, therefore testing result exists very large subjectivity and undulatory property, the non-constant of consistance, product quality can not be ensured reliably.At present the bottleneck of the whole production efficiency of the sector is in the test side of product, for this reason each large producer can only p-wire constantly the increase personnel guarantee whole product output efficient and yields; But, because recent year labor cost rapid growth certainly will increase production cost so greatly.Each large producer of multimedia display product industry is all knocking down price to exchange for the larger market share one after another at present, therefore is necessary to release new detection method, can greatly enhance productivity again under the prerequisite that can guarantee product quality.
Summary of the invention
The method that the purpose of this invention is to provide a kind of automatic detection 4K2K product master control borad, it realizes the full-automatic detection to master control borad to be detected, and detection efficiency is high, and accuracy rate is high, and testing result is reliable and stable.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of method of automatic detection 4K2K product master control borad may further comprise the steps,
Initialization, central processing module gathers reforming unit, sound collection conversion equipment, electric current and voltage Collect conversion device with V-BY-ONE and finishes initial work;
Test signal is supplied with, and the test signal supplying module provides signal to 4K2K master control borad to be detected;
Start V-BY-ONE Collect conversion device, 4K2K master control borad to be detected is carried out the collection of V-BY-ONE signal and change into the RGB image signal transmission to central processing module by V-BY-ONE Collect conversion device, finish the automatic detection judgement to the picture signal of 4K2K master control borad to be detected;
Start the sound collection conversion equipment, gather the integrated circuit board voice signal of 4K2K master control borad to be detected by the sound collection conversion equipment, be transferred to central processing module, finish the detection of the integrated circuit board voice signal of 4K2K master control borad to be detected is judged;
Trigger voltage current acquisition conversion equipment gathers the integrated circuit board voltage and current signal of 4K2K master control borad to be detected by electric current and voltage Collect conversion device, is transferred to central processing module, finishes detection and judgement to the integrated circuit board electric current and voltage of 4K2K master control borad to be detected;
Central processing module outputs to test result output module to last judged result, finishes the output to the last testing result of board under test.
Further in the technical scheme, start in the V-BY-ONE Collect conversion device step, V-BY-ONE Collect conversion device with 4K2K master control borad to be detected by the picture signal collection on the screen that will be presented at other V-BY-ONE interface of V-BY-ONE interface output, and convert this picture signal to the rgb image data form and be saved in Computer Analysis, judge by computer automatic analysis whether this converts rgb image data to qualified.
Further in the technical scheme, starting in the V-BY-ONE Collect conversion device step, is the detection method of " Pixel by Pixel " to the automatic detection determination methods of 4K2K master control borad picture signal to be detected:
By the selected test zone of client,
In each pixel and the sample image pixel that should (X, Y) is carried out R in this test zone, G, B diversity ratio pair, comparative result is then judged this pixel as qualified in setting the disparity range that allows, otherwise judges that this pixel is as defective.
Further in the technical scheme, start in the sound collection conversion equipment step, detection method to the integrated circuit board voice signal of 4K2K master control borad to be detected is: go out this signal frequency, amplitude, distortion rate parameter according to the sampled voice calculated signals, it is qualified that the parameter value of signal frequency, amplitude, distortion rate parameter all then is judged to be in the disparity range that allows, otherwise be judged to be defective.
Further in the technical scheme, detection method to the integrated circuit board electric current and voltage of 4K2K master control borad to be detected is: the signal that collects according to electric current and voltage Collect conversion device carries out obtaining the electric current and voltage value after the ADC conversion, this value is judged as this point voltage electric current in the permission disparity range of setting be qualified, otherwise be defective.
Further in the technical scheme, realize communication by the IO control module, central processing module is finished communication to 4K2K master control borad to be detected according to visitor's setup control IO control module, make 4K2K master control borad to be detected automatically enter each functional module of self, finish one by one startup V-BY-ONE Collect conversion device step, start sound collection conversion equipment and trigger voltage current device, finish one by one the measuring ability of each step.
Further in the technical scheme, after finishing initialization step, carry out the parameter setting steps,
According to the characteristic of V-BY-ONE mainboard to be detected the parameter value of V-BY-ONE Collect conversion device, sound collection conversion equipment and electric current and voltage Collect conversion device is set, finishes the parameter setting that V-BY-ONE is gathered the testing operation of reforming unit, sound collection conversion equipment and electric current and voltage Collect conversion device.
The purpose of this invention is to provide a kind of automatic detection device of a kind of 4K2K product master control borad, it realizes the full-automatic detection to master control borad to be detected, and detection efficiency is high, and accuracy rate is high, and testing result is reliable and stable.
A kind of automatic detection device of 4K2K product master control borad of the method that realizes above-mentioned automatic detection 4K2K product master control borad, comprise a computing machine, computer installation has automatic detection unit, automatic detection unit comprises central processing module, be used for realizing with 4K2K master control borad to be detected the IO control module of communication, be used for 4K2K master control borad to be detected is provided the test signal supplying module of a test signal, V-BY-ONE Collect conversion device, the sound collection conversion equipment, electric current and voltage Collect conversion device and test result output module, central processing module connects respectively V-BY-ONE Collect conversion device, sound collection conversion equipment and electric current and voltage Collect conversion device, IO control module and test result output module, V-BY-ONE Collect conversion device, the sound collection conversion equipment, electric current and voltage Collect conversion device connects respectively 4K2K master control borad to be detected.
Further in the technical scheme, V-BY-ONE Collect conversion device comprises V-BY-ONE acquisition interface module, signals collecting decoder module, central processing module, signal output interface module and detects judge module, V-BY-ONE acquisition interface module connects the signals collecting decoder module, the signals collecting decoder module connects central processing module, and central processing module connects the signal output interface module and detects judge module;
The sound collection conversion equipment comprises voice acquisition interface module, sound collection modular converter, central processing module and sound output interface module, the voice acquisition interface module connects the sound collection modular converter, the sound collection modular converter connects central processing module, and central processing module connects the voice output interface module;
Electric current and voltage Collect conversion device comprises electric current and voltage acquisition interface module, ADC modular converter, central processing module and electric current and voltage output interface module, electric current and voltage acquisition interface module connects the ADC modular converter, the ADC modular converter connects central processing module, and central processing module connects the electric current and voltage output interface module.
Further in the technical scheme, described IO control module comprises control interface load module, central processing module and output interface module, and output interface module comprises IR remote control output interface module, I2C output interface module or RS232 serial ports output interface module.
After adopting said structure, the present invention is compared with existing technology the advantage that has and is:
The present invention is simple in structure, and the communication interface by computer connects master control borad to be detected, such as pci interface, PCI-E interface and USB interface, realization is to the full-automatic detection of master control borad to be detected, and detection efficiency is high, and accuracy rate is high, testing result is reliable and stable, uses manpower and material resources sparingly.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the 4K2K product of prior art.
Fig. 2 is the circuit diagram of automatic detection device of the present invention.
Fig. 3 is the circuit diagram of V-BY-ONE Collect conversion device of the present invention.
Fig. 4 is the circuit diagram of sound collection conversion equipment of the present invention.
Fig. 5 is the circuit diagram of electric current and voltage Collect conversion device of the present invention.
Fig. 6 is the circuit diagram of IO control module of the present invention.
Embodiment
The following stated only is preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.
Embodiment one
A kind of method of automatic detection 4K2K product master control borad sees that Fig. 2 to shown in Figure 6, may further comprise the steps.
Initialization, central processing module gathers reforming unit, sound collection conversion equipment, electric current and voltage Collect conversion device with V-BY-ONE and finishes initial work.
The parameter setting steps, according to the characteristic of V-BY-ONE mainboard to be detected the parameter value of V-BY-ONE Collect conversion device, sound collection conversion equipment and electric current and voltage Collect conversion device is set, finishes the parameter setting that V-BY-ONE is gathered the testing operation of reforming unit, sound collection conversion equipment and electric current and voltage Collect conversion device.
Test signal is supplied with, and the test signal supplying module provides signal to 4K2K master control borad to be detected.
Start V-BY-ONE Collect conversion device, 4K2K master control borad to be detected is carried out the collection of V-BY-ONE signal and change into the RGB image signal transmission to central processing module by V-BY-ONE Collect conversion device, finish the automatic detection judgement to the picture signal of 4K2K master control borad to be detected.
V-BY-ONE Collect conversion device with 4K2K master control borad to be detected by the picture signal collection on the screen that will be presented at other V-BY-ONE interface of V-BY-ONE interface output, and convert this picture signal to the rgb image data form and be saved in Computer Analysis, judge by computer automatic analysis whether this converts rgb image data to qualified.
Particularly, automatic detection determination methods to 4K2K master control borad picture signal to be detected is the detection method of " Pixel by Pixel ": by the selected test zone of client, in this test zone in each pixel and the sample image to should (X, Y) pixel carries out R, G, B diversity ratio pair, comparative result are then judged this pixel as qualified in setting the disparity range that allows, otherwise judge that this pixel is as defective.
Start the sound collection conversion equipment, gather the integrated circuit board voice signal of 4K2K master control borad to be detected by the sound collection conversion equipment, be transferred to central processing module, finish the detection of the integrated circuit board voice signal of 4K2K master control borad to be detected is judged; Detection method to the integrated circuit board voice signal of 4K2K master control borad to be detected is: go out this signal frequency, amplitude, distortion rate parameter according to the sampled voice calculated signals, it is qualified that the parameter value of signal frequency, amplitude, distortion rate parameter all then is judged to be in the disparity range that allows, otherwise be judged to be defective.
Trigger voltage current acquisition conversion equipment gathers the integrated circuit board voltage and current signal of 4K2K master control borad to be detected by electric current and voltage Collect conversion device, is transferred to central processing module, finishes detection and judgement to the integrated circuit board electric current and voltage of 4K2K master control borad to be detected; Detection method to the integrated circuit board electric current and voltage of 4K2K master control borad to be detected is: the signal that collects according to electric current and voltage Collect conversion device carries out obtaining the electric current and voltage value after the ADC conversion, this value is judged as this point voltage electric current in the permission disparity range of setting be qualified, otherwise be defective.
Realize communication by the IO control module, central processing module is finished communication to 4K2K master control borad to be detected according to visitor's setup control IO control module, make 4K2K master control borad to be detected automatically enter each functional module of self, finish one by one startup V-BY-ONE Collect conversion device step, start sound collection conversion equipment and trigger voltage current device, finish one by one the measuring ability of each step.
Central processing module outputs to test result output module to last judged result, finishes the output to the last testing result of board under test.
Embodiment two
A kind of automatic detection device of 4K2K product master control borad of the method that realizes embodiment one, comprise a computing machine, see that Fig. 2 is to shown in Figure 6, computer installation has automatic detection unit, automatic detection unit comprises central processing module, be used for realizing with 4K2K master control borad to be detected the IO control module of communication, be used for 4K2K master control borad to be detected is provided the test signal supplying module of a test signal, V-BY-ONE Collect conversion device, the sound collection conversion equipment, electric current and voltage Collect conversion device and test result output module, central processing module connects respectively V-BY-ONE Collect conversion device, sound collection conversion equipment and electric current and voltage Collect conversion device, IO control module and test result output module, V-BY-ONE Collect conversion device, the sound collection conversion equipment, electric current and voltage Collect conversion device connects respectively 4K2K master control borad to be detected.
V-BY-ONE Collect conversion device comprises V-BY-ONE acquisition interface module, signals collecting decoder module, central processing module, signal output interface module and detects judge module, V-BY-ONE acquisition interface module connects the signals collecting decoder module, the signals collecting decoder module connects central processing module, and central processing module connects the signal output interface module and detects judge module.The interface shape of V-BY-ONE Collect conversion device can be pci interface, PCI-E interface or USB interface, and V-BY-ONE Collect conversion device comes by pci interface, PCI-E interface or USB interface and the computing machine machine carries out physical connection.
V-BY-ONE acquisition interface module provide one be connected the coupling arrangement that the V-BY-ONE interface of 4K2K master control borad connects, the input end of this coupling arrangement connects the output terminal of the V-BY-ONE interface of 4K2K master control borad to be detected, signal enters into the signals collecting decoder module by V-BY-ONE acquisition interface module, finish the signal decoding to V-BY-ONE, and in real time decoded TTL signal data is sent to central processing module (FPGA) in real time and judges and put in order, arrangement converted rgb image data to after CPU (central processing unit) was judged the TTL signal analysis, send engine by the output interface module trigger data, transmit by computer equipment data transmission bus (PCI or PCI-E or USB), after being sent to calculator memory by the high speed DMA passage, on the graphical interfaces that testing system software is presented at this rgb image data, this image is consistent with the shown image out of LCDs of the direct connecting band V-BY-ONE of 4K2K master control borad to be detected interface.
The sound collection conversion equipment comprises voice acquisition interface module, sound collection modular converter, central processing module and sound output interface module, the voice acquisition interface module connects the sound collection modular converter, the sound collection modular converter connects central processing module, and central processing module connects the voice output interface module.
The sound collection conversion equipment is used for realization to the detection of the audio output function module of 4K2K master control borad to be detected; The voice acquisition interface module of sound collection conversion equipment is connected with the audio output interface of 4K2K master control borad to be detected, triggered by central processing module, opening the voice acquisition interface module finishes the defeated signals collecting that goes out voice signal of 4K2K master control borad to be detected, carried out again the processing such as ADC conversion or opto-electronic conversion by the sound collection modular converter, convert the frequency of digital signal audio frequency signal to, carry out simultaneously calculating and the analysis of amplitude, distortion rate, exported analyzing data and result by the voice output interface module.
Electric current and voltage Collect conversion device comprises electric current and voltage acquisition interface module, ADC modular converter, central processing module and electric current and voltage output interface module, electric current and voltage acquisition interface module connects the ADC modular converter, the ADC modular converter connects central processing module, and central processing module connects the electric current and voltage output interface module.
Electric current and voltage Collect conversion device: be used for supply voltage and the electric current of each chip on the 4K2K master control borad to be detected are detected, and each road voltage and current of exporting on the 4K2K master control borad to be detected is detected; Electric current and voltage gathers the electric current and voltage acquisition interface module of reforming unit and each road electric current and voltage interface to be tested of 4K2K master control borad to be detected is connected, triggered by central processing module, cut-in voltage current acquisition interface module, finish the signals collecting to the output voltage electric current of 4K2K master control borad to be detected, then carried out the processing such as ADC conversion by the ADC modular converter, after converting digital signal to, again analysis processing result is exported by the electric current and voltage output interface module.
The IO control module comprises control interface load module, central processing module and output interface module, and output interface module comprises IR remote control output interface module, I2C output interface module or RS232 serial ports output interface module.
The IO control module be used for to realize and the communicating by letter of 4K2K master control borad to be detected that 4K2K master control borad to be detected provides three kinds of communication hardware connecting interfaces, is respectively IR infrared remote control interface mode, I2C interface and RS232 serial line interface; According to the control interface that 4K2K master control borad to be detected provides, the mode that can select any one or multiple mixing in three kinds to use; The central processing module of Auto-Test System is finished control to 4K2K master control borad to be detected by the IO control module, switch the duty of 4K2K master control borad to be detected, enter and start each sub-function module of 4K2K master control borad to be detected, then finish the detection of all functions performance under each functional module of 4K2K master control borad to be detected.
The control interface load module of IO control module is outer setting, uses any interface module and 4K2K master control borad to be detected to communicate control by central processing module control interface load module; Central processing module is controlled corresponding output interface module according to the input value of control interface load module, finishes and the communicating by letter of 4K2K master control borad to be detected.
Above content is preferred embodiment of the present invention only, for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, and this description should not be construed as limitation of the present invention.