CN103024433A - Cascade-based signal acquisition and detection system - Google Patents
Cascade-based signal acquisition and detection system Download PDFInfo
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- CN103024433A CN103024433A CN2012105580841A CN201210558084A CN103024433A CN 103024433 A CN103024433 A CN 103024433A CN 2012105580841 A CN2012105580841 A CN 2012105580841A CN 201210558084 A CN201210558084 A CN 201210558084A CN 103024433 A CN103024433 A CN 103024433A
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Abstract
The invention discloses a cascade-based signal acquisition and detection system. The system comprises a signal acquisition and control unit and a plurality of cascaded signal switch units, wherein each lowest signal switch unit in the plurality of cascaded signal switch units is correspondingly connected with a plurality of boards to be detected so as to acquire low voltage differential signaling (LVDS) and audio/video signals; the superior signal switch unit is connected with the signal acquisition and control unit, receives a control command sent by the signal acquisition and control unit, and transmits the control command to the corresponding lowest signal switch units to acquire corresponding LVDS and audio/video signals of boards to be detected; the corresponding lowest signal switch units transmit the acquired LVDS and audio/video signals to the superior signal switch unit which transmits the LVDS and audio/video signals to the signal acquisition and control unit; and the signal acquisition and control unit is connected with and controlled by a personal computer (PC) and decodes and sends the acquired LVDS and audio/video signals to the PC for detection.
Description
Technical field
The present invention relates to electronic device field, relate in particular to a kind of signals collecting based on cascade and detection system.
Background technology
At present, in the panel TV field, in product development process, in order to guarantee the reliability of product, need to be in research and development and production process to the product detection of wearing out.
Traditional method is used artificial regular check, because burn-in chamber often is in the condition of high temperature, the danger that personnel enter and fall in a swoon.And because there is subjectivity in manual detection, the situation of mistakes and omissions can occur easily.
Afterwards, used gradually camera to carry out information gathering to detect, and still can only collect the parts of images signal, and receive that easily light disturbs.And detect and to belong to passive type, can't ACTIVE CONTROL detected aging object is with the detection of wearing out, thereby loses easily many relevant information.And this checkout gear efficient is low, also can't realize distant signal collection and detection.
Summary of the invention
Purpose of the present invention provides a kind of signals collecting based on cascade and detection system, can effectively control the coherent signal that gathers and detect television board, with the degree of aging of monitoring product, and helps to improve the quality of products and customer experience.
For achieving the above object, the invention provides a kind of signals collecting based on cascade and detection system, comprise the signal shift switch unit of signals collecting and control unit and a plurality of cascades; In the signal shift switch unit of described cascade, each the signal shift switch unit that is in subordinate is connected respectively a plurality of awaiting board card to gather LVDS signal and audio-video signal; The signal shift switch unit that is in higher level connects described signals collecting and control unit, the corresponding signal shift switch unit that receives control command that described signals collecting and control unit send and control command is delivered to subordinate to be gathering LVDS signal and the audio-video signal of a corresponding awaiting board card, and the corresponding signal shift switch unit of described subordinate is delivered to described higher level's signal shift switch unit to send described signals collecting and control unit to the LVDS signal that collects and audio-video signal; Described signals collecting and control unit are connected with PC, are subjected to the control of described PC and with the LVDS signal and the audio-video signal that gather and send to PC to detect.
As the improvement of such scheme, each signal shift switch unit comprises:
A plurality of signal receiving modules are used for receiving LVDS signal and audio-video signal from a plurality of passages of subordinate a plurality of signal shift switch unit;
Controller is used for receiving higher level's control command that higher controller sends by control bus, to send LVDS signal that current selection passes through and the control signal of audio-video signal passage; And the higher level's control command that receives carried out sending to subordinate's controller after the correspondence adjustment;
Signal selector, the control signal that sends according to controller is to switch data-signal and the audio-video signal that transmits the LVDS signal that current selection passes through;
Clock selector, the control signal that sends according to controller to be switching the clock signal that transmits the LVDS signal that current selection passes through, and clock signal is sent to phase-locked loop carry out Frequency Locking;
Synthetic and the output module of signal, be used for the data-signal of signal selector transmission and the clock signal of phase-locked loop transmission are synthesized the LVDS signal, and together export to the signal receiving module of higher level's diverter switch unit together with the audio-video signal that signal selector transmits.
As the improvement of such scheme, the signal receiving module that each signal shift switch unit comprises is four, to receive LVDS signal and the audio-video signal from four groups of passages of subordinate.
Improvement as such scheme, each the signal shift switch unit that is in subordinate connects an awaiting board card by a LVDS signal gathering unit, audio-video signal collecting unit and control signal transmitting element are corresponding respectively, described LVDS signal gathering unit is used for gathering the LVDS signal of awaiting board card, described audio-video signal collecting unit is used for gathering the audio-video signal of awaiting board card, and described control signal transmitting element is used for sending remote signal to awaiting board card.
Signals collecting and detection system based on cascade disclosed by the invention, can effectively control the coherent signal that gathers and detect television board, the full automatic monitoring of wearing out of energy, need not artificial participation, so can solve the problem that artificial test exists, improve the reliability of test result, reduce tester's difficulty of test and working strength.And help to improve the quality of products and customer experience.
Description of drawings
Fig. 1 is the structural representation of a kind of signals collecting and detection system based on cascade in the embodiment of the invention.
Fig. 2 is the structural representation of signal shift switch unit shown in Figure 1.
Fig. 3 a ~ 3b has shown how signals collecting and the detection system based on cascade of Fig. 1 realize multi-stage cascade control.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Referring to Fig. 1, it is the structural representation of a kind of signals collecting and detection system based on cascade of providing of the embodiment of the invention.Signal shift switch unit 10 and signals collecting and the control unit 20 that should comprise a plurality of cascades based on signals collecting and the detection system of cascade; Wherein, in the signal shift switch unit of described cascade, each the signal shift switch unit 10 that is in subordinate is connected respectively a plurality of awaiting board card to gather LVDS signal and the audio-video signal of each awaiting board card; The signal shift switch unit 10 that is in higher level connects described signals collecting and control units 20, the corresponding signal shift switch unit that receives control command that described signals collecting and control unit 20 send and control command is delivered to subordinate to be gathering LVDS signal and the audio-video signal of a corresponding awaiting board card, and the corresponding signal shift switch unit 10 of described subordinate is delivered to described higher level's signal shift switch unit to send described signals collecting and control unit to the LVDS signal that collects and audio-video signal; Described signals collecting and control unit 20 are connected with PC 30, be subjected to described PC 30 controls, concrete, the control signal that PC 30 is sent is encoded into described control command, and sends to PC 30 to detect after the LVDS signal that gathers and audio-video signal decoded.
In the present embodiment, it (is that each signal shift switch unit 10 has four groups of LVDS signals and audio-video signal input channel (signal of every group of input channel actual acquisition comprises respectively again a plurality of signalling channels that a signal shift switch unit 10 of every grade is connected with the signal shift switch unit 10 of four subordinates, for example one group of input channel comprises LVDS signalling channel and an audio-video signal passage at least), LVDS signal and audio-video signal with signal shift switch unit 10 output that receives four groups of subordinates), and adopt cascade to switch communicaton protocol and control, for example, adopt unified control signal to switch.Concrete, when all signal shift switch unit 10 of arbitrary grade receive the control command of upper level, after control command analyzed, only these control commands are carried out to carry out corresponding operation (for example, switching the current LVDS signal that passes through and the passage of audio-video signal) in the signal shift switch unit 10 that is strobed of with good grounds control command; And the higher level's control command that receives is carried out sending to after corresponding adjustment the (the scheme back of adjustment is described in detail) the signal shift switch unit 10 of all next stage; Equally, when the signal shift switch unit 10 of all next stage receives the control command of upper level, only this control command just can be carried out (for example to carry out corresponding operation in a signal shift switch unit 10 being strobed of with good grounds control command, switch the current LVDS signal that passes through and the passage of audio-video signal), and the higher level's control command that receives is carried out sending to after corresponding adjustment the (the scheme back of adjustment is described in detail) the signal shift switch unit 10 of all next stage, until all signal shift switch unit 10 of subordinate are when receiving the control command of upper level, only this control command just can be carried out (for example to carry out corresponding operation in a signal shift switch unit 10 being strobed of with good grounds control command, switch the current LVDS signal that passes through and the passage of audio-video signal), thus can realize nearly switching and the collection of LVDS signal/audio-video signal of 1024 tunnel.
Understandable, each the signal shift switch unit 10 that is in subordinate connects an awaiting board card by a LVDS signal gathering unit and an audio-video signal collecting unit (not shown) of are corresponding respectively, described LVDS signal gathering unit is used for gathering the LVDS signal of awaiting board card, and described audio-video signal collecting unit is used for gathering the audio-video signal of awaiting board card.
Especially, each the signal shift switch unit that is in subordinate also connects an awaiting board card by a control signal transmitting element is corresponding, and described control signal transmitting element is used for sending remote signal (detailed process the following describes) to awaiting board card.
Understandable, only used an arrow to represent the transmission of LVDS signal and audio-video signal among Fig. 1, but, do not represent only to have a signal transmission channels, this arrow can represent at least two signal transmission channels---LVDS signal transmission channels and audio-video signal transmission channels, but also can gather as required the coherent signal of awaiting board card and set up more transmission channels.
In conjunction with Fig. 2, describe now the structure of each signal shift switch unit 10 in detail, comprise the synthetic and output module 106 of a plurality of signal receiving modules 101, controller 102, data-signal selector 103, clock selector 104, phase-locked loop 105 and LVDS signal, wherein:
A plurality of signal receiving modules 101 are used for receiving LVDS signal and audio-video signal from a plurality of passages of subordinate a plurality of LVDS signal shift switch unit.In the present embodiment, each signal shift switch unit 10 comprises four signal receiving module 101a ~ 101d, to receive LVDS signal and the audio-video signal from four groups of passages of subordinate.
Phase-locked loop 105 is connected with the output of described clock selector 104, the frequency adjustment of being correlated with the clock signal of described clock selector 104 being selected switch out; Gather LVDS signal that described a plurality of signal receiving modules 101 receive and the clock signal of audio-video signal but also be connected with described a plurality of signal receiving modules 101 to control.
Synthetic and the output module 106 of signal, be used for the data-signal of signal selector 103 transmission and the clock signal of phase-locked loop 105 transmission are synthesized the LVDS signal, and together export to the signal receiving module of higher level's signal shift switch unit together with the audio-video signal that signal selector transmits.
Below, in conjunction with Fig. 3 control command ~ 3b, describe the signals collecting based on cascade of the present invention and detection system and how to realize multi-stage cascade control.
Shown in Fig. 3 control command, every grade controller adopts unified control command to switch and control and control command adopt the Lvds signal of two-way: D control command T control command and clock control.Wherein, clock(CLK) signal is clock signal, and D control command and T control command (data) signal must be coordinated the CLK signal could normally transmit data.The D control command is used for the switching of passage, be divided into two parts: frame head part and data division, (every grade of controller uses the highest two gating signals as passage, pass through again the control command adjustment, for example move to left and issue subordinate's switch after two, to realize multi-stage cascade control, for example, the one-level order is 11000100000, and then lower the order is 000100000000.
The T control command is used for the control signal (such as remote control) that control sends plate, signal is divided into three parts: frame head part, control command word and data division, wherein, frame head partly is used for protocol handshake, control word explanation control word type is (such as remote control, and data division is Control the content (such as the key of remote keying) button etc.).。For example, take remote control as example, treat the test plate at needs and carry out remote control when control, send control signals to signals collecting and control unit 20 by PC 10.Signals collecting and control unit 20 send control command by the T control command to signal switch unit 10, the signal switch unit 10 of signal switch unit 10 subordinate's gatings sends the T control command, by that analogy, until all signal shift switch unit 10 of subordinate are when receiving the control command of upper level, the T control command is sent to the control signal transmitting element, and convert actual remote signal to by the control signal transmitting element and send to awaiting board card.
Concrete, please refer to Fig. 3 b, when the controller of arbitrary grade signal shift switch unit 10 control commands reception higher level's control command is " 1011 ... " among the figure, the highest two according to control command is that " 10 " switch LVDS signal and the audio-video signal that receives when the third channel of prime, and with the higher level control command is " 1011 ... " moves to left and become the controller that control command " 1100 ... " sends to the signal shift switch unit 10b1 ~ 10b4 of all next stage after two.At this time, after the controller of the signal shift switch unit 10b1 ~ 10b4 of all next stage receives this control command, only have with signal shift switch unit 10b3 that the third channel of the signal shift switch unit of upper level connects to transmit signal and just make corresponding action according to this control command, namely the highest two according to control command are that " 11 " switch LVDS signal and the audio-video signal that receives when the four-way of prime, and with the higher level control command is " 1100 ... " moves to left and become the controller that control command " 00xx ... " sends to the signal shift switch unit 10c1 ~ 10c4 of all next stage after two.Then, after the controller of the signal shift switch unit 10c1 ~ 10c4 of all next stage receives this control command, only have with signal shift switch unit 10c4 that the four-way of the signal shift switch unit of upper level connects to transmit signal and just make corresponding action according to this control command, namely the highest two according to control command are that " 00 " switches LVDS signal and the audio-video signal that receives when the first passage of prime, and with the higher level control command is " 00xx ... " moves to left and become the controller that control command " xxxx ... " sends to the signal shift switch unit of all next stage after two.By that analogy, until all signal shift switch unit 10 of subordinate are when receiving the control command of upper level, only this control command just can be carried out carrying out corresponding operation in a signal shift switch unit 10 being strobed of with good grounds control command, can realize nearly 1024 tunnel LVDS signal and switching and the collection of audio-video signal thereby gather LVDS signal and audio-video signal with the awaiting board card to correspondence.
Note the source of this control command: transmitted control signal to signals collecting and control unit 20 by PC 30, after this signals collecting and control unit 20 receive control signal, be compiled into the control command of certain format, then control command is sent to top-ranking's signal shift switch unit 10, thereby realize the cascade transmission.
Understandable, the process that sends remote signal to awaiting board card is the same, is not repeated in this description at this.
In sum, signals collecting and detection system based on cascade disclosed by the invention, can effectively control the coherent signal that gathers and detect television board, the full automatic monitoring of wearing out of energy, need not artificial participation, so can solve the problem that artificial test exists, improve the reliability of test result, reduce tester's difficulty of test and working strength.And help to improve the quality of products and customer experience.
The above is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.
Claims (4)
1. signals collecting and detection system based on a cascade is characterized in that, comprise the signal shift switch unit of signals collecting and control unit and a plurality of cascades; In the signal shift switch unit of described cascade, each the signal shift switch unit that is in subordinate is connected respectively a plurality of awaiting board card to gather LVDS signal and audio-video signal; The signal shift switch unit that is in higher level connects described signals collecting and control unit, the corresponding signal shift switch unit that receives control command that described signals collecting and control unit send and control command is delivered to subordinate to be gathering LVDS signal and the audio-video signal of a corresponding awaiting board card, and the corresponding signal shift switch unit of described subordinate is delivered to described higher level's signal shift switch unit to send described signals collecting and control unit to the LVDS signal that collects and audio-video signal; Described signals collecting and control unit are connected with PC, be subjected to described PC control and LVDS signal and the audio-video signal that gathers sent to PC to detect.
2. signals collecting and detection system based on cascade as claimed in claim 1 is characterized in that, each signal shift switch unit comprises:
A plurality of signal receiving modules are used for receiving LVDS signal and audio-video signal from a plurality of passages of subordinate a plurality of signal shift switch unit;
Controller is used for receiving higher level's control command that higher controller sends by control bus, to send LVDS signal that current selection passes through and the control signal of audio-video signal passage; And the higher level's control command that receives carried out sending to subordinate's controller after the correspondence adjustment;
Signal selector, the control signal that sends according to controller is to switch data-signal and the audio-video signal that transmits the LVDS signal that current selection passes through;
Clock selector, the control signal that sends according to controller to be switching the clock signal that transmits the LVDS signal that current selection passes through, and clock signal is sent to phase-locked loop carry out Frequency Locking;
Synthetic and the output module of signal, be used for the data-signal of signal selector transmission and the clock signal of phase-locked loop transmission are synthesized the LVDS signal, and together export to the signal receiving module of higher level's diverter switch unit together with the audio-video signal that signal selector transmits.
3. signals collecting and detection system based on cascade as claimed in claim 2 is characterized in that, the signal receiving module that each signal shift switch unit comprises is four, to receive LVDS signal and the audio-video signal from four groups of passages of subordinate.
4. signals collecting and detection system based on cascade as claimed in claim 1, it is characterized in that, each the signal shift switch unit that is in subordinate connects an awaiting board card by a LVDS signal gathering unit, audio-video signal collecting unit and control signal transmitting element are corresponding respectively, described LVDS signal gathering unit is used for gathering the LVDS signal of awaiting board card, described audio-video signal collecting unit is used for gathering the audio-video signal of awaiting board card, and described control signal transmitting element is used for sending remote signal to awaiting board card.
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| CN112422954A (en) * | 2020-10-23 | 2021-02-26 | 中国科学院西安光学精密机械研究所 | LVDS video acquisition, detection and transmission system and method |
| CN114710660A (en) * | 2022-05-31 | 2022-07-05 | 远峰科技股份有限公司 | Camera test system of intelligence passenger cabin and autopilot territory |
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Effective date of registration: 20180626 Address after: 510530 room 803, No. 6 (1), Yun Pu four road, Whampoa District, Guangzhou, Guangdong. Co-patentee after: Guangzhou CVT Electronics Technology Co., Ltd. Patentee after: Guangzhou radium Intelligent Technology Co., Ltd. Address before: No. 192, Science City, Guangdong, Guangzhou, Guangdong Patentee before: Guangzhou CVT Electronics Technology Co., Ltd. |