CN103618897B - A testing device of a machine core main board of a TV integrated machine - Google Patents
A testing device of a machine core main board of a TV integrated machine Download PDFInfo
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- CN103618897B CN103618897B CN201310528384.XA CN201310528384A CN103618897B CN 103618897 B CN103618897 B CN 103618897B CN 201310528384 A CN201310528384 A CN 201310528384A CN 103618897 B CN103618897 B CN 103618897B
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Abstract
The invention discloses a testing device of a machine core main board of a TV integrated machine and relates to TV set main board testing technology. The technical essential of the testing device is that the testing device comprises a pneumatic pin bed, a computer equipped with a LVDS acquiring card, a pneumatic pin bed control module, an electrolytic capacitor discharging control module, a power supply module for a machine core main board to be tested, a multifunctional control module, an audio and video signal module, and a AD collector. The pneumatic pin bed control module is used for controlling the rising and the falling of the pin board a pneumatic pin bed. Pins are disposed on the pin board and are used for achieving signal connection and electrical connection between various modules of the testing device and the machine core main board to be tested. The computer is used for controlling the pneumatic pin bed control module, the electrolytic capacitor discharging control module, and the power supply module for a machine core main board to be tested to operate, receiving and displaying a testing result outputted by the multifunctional control module, analyzing a received LVDS signal and an audio signal and displaying an analyzed result.
Description
Technical field
The present invention relates to TV SKD measuring technology, especially the testing equipment of TV integrated machine chip main board.
Background technology
Chip main board assembly, LED driven unit and power panel assembly are combined " three-in-one " chip main board by LCD TV all-in-one machine mainboard.The subjectivity practicality of this chip main board checks and completes to manually, does not have automated test device available, greatly have impact on the consistency of production efficiency and product quality.
Summary of the invention
The defect that the present invention is directed to prior art provides a kind of TV integrated machine chip main board testing equipment, realizes the automatic test of chip main board, effectively reduces the testing costs such as hand labor, increases work efficiency.
The technical solution used in the present invention is as follows: comprise pneumatic needle-bar, be provided with the computer of LVDS capture card, pneumatic needle-bar control module, electrochemical capacitor control of discharge module, chip main board supply module to be measured, Multifunctional control module, audio-video signal module and AD collector;
Wherein,
Pneumatic needle-bar control module is for controlling the needle plate lifting of pneumatic needle-bar; Described needle plate has and patches pin, described in patch pin and to be connected with the signal of chip main board to be measured for realizing described testing equipment and to be electrically connected;
Control of discharge end and the electrochemical capacitor on needle plate of electrochemical capacitor control of discharge module discharge and patch pin and be connected, for controlling mainboard By Electrolysis capacitor discharge;
Chip main board supply module to be measured and the chip main board to be measured on needle plate are powered and are patched pin and be connected, for powering to chip main board to be measured;
Multifunctional control module and the short-circuit test on needle plate patch pin, ICT test patch pin, distant control function test patch pin, press key function testing patches pin, current supply circuit voltage tester patches pin, FCT tests and patches pin and be all connected, for realizing the short-circuit test of mainboard, ICT test, distant control function test, press key function testing, current supply circuit voltage tester and FCT test;
Audio-video signal module and the audio frequency and video on needle plate export and patch pin and be connected, and provide audio-video signal for receiving audio-video signal that audio-video signal source exports and exporting to chip main board to be measured; Audio-video signal module also patches pin with the audio signal on needle plate input and is connected, and for receiving the audio signal that chip main board to be measured exports, exports to AD collector after carrying out level conversion to described audio signal;
AD collector has signal with audio-video signal module and is connected, and for receiving the audio signal after level conversion, carries out AD sampling to it, and by sampling, the audio signal obtained exports to computer;
The LVDS signal that LVDS capture card on computer exports for gathering chip main board to be measured, then by described LVDS Signal transmissions to computer;
Described computer also all has signal be connected with described pneumatic needle-bar control module, electrochemical capacitor control of discharge module, chip main board supply module to be measured, Multifunctional control module; For controlling pneumatic needle-bar control module, electrochemical capacitor control of discharge module and chip main board supply module to be measured work, for receiving and showing the testing result that Multifunctional control module exports, and for carrying out analysiss also display analysis result to the LVDS signal received and audio signal.
Preferably, the short-circuit test signal of Multifunctional control module, ICT test signal, distant control function test signal, press key function testing signal, current supply circuit voltage test signal and FCT test signal by patching pin with the short-circuit test on needle plate respectively after described audio-video signal module switching, ICT test patch pin, distant control function test patch pin, press key function testing patches pin, current supply circuit voltage tester patches pin, FCT tests and patches pin and be connected.
Preferably, described pneumatic needle-bar control module, electrochemical capacitor control of discharge module and chip main board supply module three module to be measured are connected with the signal of computer to be transferred by Multifunctional control module and realize.
Preferably, described Multifunctional control module carries out handshaking and signal converting by RS232 interface and computer.
Preferably, also comprise LVDS protector, the scsi interface of described LVDS capture card is connected with the output of described LVDS protector, and the input of LVDS protector is connected with the LVDS signal plug of chip main board to be measured.
Preferably, the control of discharge end of described electrochemical capacitor control of discharge module patches pin by discharging with the electrochemical capacitor on needle plate after described pneumatic needle-bar control module switching and is connected; The feeder ear of chip main board supply module to be measured also patches pin by powering with the chip main board to be measured on needle plate after pneumatic needle-bar control module switching and is connected.
Preferably, at least one redundancy electrolysis capacitor discharge control module is also comprised; The control of discharge end of described redundancy electrolysis capacitor discharge control module patches pin by discharging with the other electrochemical capacitor on needle plate after pneumatic needle-bar control module or the switching of audio-video signal module and is connected, for controlling other electrochemical capacitors electric discharge on mainboard; Described redundancy electrolysis capacitor discharge control module also has signal with computer and is connected, and receiving computer controls.
Preferably, described needle-bar is connected with needle-bar framework removably.
Preferably, computer carries out analysis and display analysis result by LabVIEW software to the LVDS signal received and audio signal.
Preferably, also comprise the connection line of the auxiliary plate part except TV integrated machine chip main board, the connection line of described auxiliary plate part is connected by the pin that patches on described needle plate with the interface between chip main board to be measured.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1. the de-screen adopting the display replacement liquid crystal display screen of computer to realize TV integrated machine chip main board detects;
2. realize the full-automation test of chip main board under control of the computer, enhance productivity, reduce manufacturing cost.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is principle of the invention block diagram.
Embodiment
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification, unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
As Fig. 1, one embodiment of the present of invention comprise pneumatic needle-bar, be provided with the computer of LVDS capture card (such as, LVDS capture card is inserted in the PCIe 1X slot of computer), pneumatic needle-bar control module, electrochemical capacitor control of discharge module, chip main board supply module to be measured, Multifunctional control module, audio-video signal module and AD collector.
Wherein, pneumatic needle-bar control module, for controlling the needle plate lifting of pneumatic needle-bar, described needle plate has and patches pin, described in patch pin and to be connected with the signal of chip main board to be measured for realizing described testing equipment and to be electrically connected.Concrete, the needle plate of pneumatic needle-bar is driven by air pump, in gas circuit, electromagnetically operated valve is set, electromagnetically operated valve is optionally connected with the external world or is connected with air pump, when pneumatic needle-bar control module Controlling solenoid valve and air pump conducting, the gas of air pump enters gas circuit promotion needle plate jack-up and chip main board to be measured patches, when pneumatic needle-bar control module Controlling solenoid valve and extraneous connection, needle-bar declines, and is separated with chip main board to be measured.Described needle-bar framework is installed with a day plate, needle plate is positioned at immediately below day plate, when it rises under the control of the computer or declines, during work, chip main board to be measured is placed on needle plate by staff, by the test point on chip main board to be measured with patch for together, pneumatic needle-bar control module controls needle plate and rises under computer instruction, rise to day support column at plate place, the extruding of support column on sky plate is positioned over chip main board to be measured on needle plate thus the test point realizing chip main board to be measured patches pin with needle plate is connected.
Control of discharge end and the electrochemical capacitor on needle plate of electrochemical capacitor control of discharge module discharge and patch pin and be connected, for controlling mainboard By Electrolysis capacitor discharge; Those skilled in the art know, the power unit of chip main board has a larger electrochemical capacitor, for receiving 220V alternating current, then the direct current of about 300V is converted into, in test process, when the power is stopped, the 300V high pressure of this electrochemical capacitor is needed to bleed off, otherwise entail dangers to worker safety, therefore needs control of discharge module to provide discharge loop to this electric capacity, makes it discharge.In another embodiment, more than one of the electrochemical capacitor control of discharge module in testing equipment, this considers chip main board also has other to need the electric capacity of electric discharge.
Chip main board supply module to be measured and the chip main board to be measured on needle plate are powered and are patched pin and be connected, for providing the operating voltage of 220V to chip main board to be measured.
Multifunctional control module and the short-circuit test on needle plate patch pin, ICT(on-line testing) test patch pin, distant control function test patch pin, press key function testing patches pin, current supply circuit voltage tester patches pin, FCT(functional test) test and patch pin and be all connected, for realizing the short-circuit test of mainboard, ICT test, distant control function test, press key function testing, current supply circuit voltage tester and FCT test.Above-mentioned various test philosophy and circuit are prior art, do not repeat them here its detailed process.
Audio-video signal module and the audio frequency and video on needle plate export and patch pin and be connected, and provide audio-video signal for receiving audio-video signal that audio-video signal source exports and exporting to chip main board to be measured; Audio-video signal module also patches pin with the audio signal on needle plate input and is connected, and for receiving the audio signal that chip main board to be measured exports, exports to AD collector after carrying out level conversion to described audio signal.The audio-video signal that described audio-video signal source exports can be AV signal, HDMI signal, VGA signal etc., in another specific embodiment, audio-video signal module has the terminals such as AV signal input part, VGA signal input part, HDMI signal input part, it has multi-channel A V signal output, multipath VGA signal output, HDMI signal output part accordingly, that is to say, audio-video signal module is used for the signal received being carried out shunt and exports, to supply chip main board to be measured.Described all kinds of audio-video signal is converted to LVDS signal and exports and audio signal output by chip main board to be measured.
AD collector has signal with audio-video signal module and is connected, and for receiving the audio signal after level conversion, carries out AD sampling to it, and by sampling, the audio signal obtained exports to computer.
The LVDS signal that LVDS capture card on computer exports for gathering chip main board to be measured, then by described LVDS Signal transmissions to computer.
Described computer also all has signal be connected with described pneumatic needle-bar control module, electrochemical capacitor control of discharge module, chip main board supply module to be measured, Multifunctional control module; For controlling pneumatic needle-bar control module, electrochemical capacitor control of discharge module and chip main board supply module to be measured work: pneumatic needle-bar control module performs needle-bar jack-up/decline under the instruction of computer, chip main board supply module to be measured realizes chip main board Alternating Current Power Supply ON/OFF under computer instruction controls, electrochemical capacitor control of discharge module controls electrochemical capacitor electric discharge under computer instruction, and Multifunctional control module completes the test of aforementioned types of functionality under control of computer instructions successively.
Described computer also for receiving and showing the testing result that Multifunctional control module exports, and for carrying out analysiss also display analysis result to the LVDS signal received and audio signal.
Such as, the short-circuit test of multifunction module provides a short-circuit test loop to each current supply circuit in chip main board, such as will connect with current supply circuit with resistance, and the excitation power supply of certain voltage is provided to series loop, then detect ohmically voltage, by the Voltage Feedback that detects to computer, computer shows over the display to be checked for staff, if ohmically voltage is higher than set point, then thinks that current supply circuit resistance is too small, belong to short-circuit condition.
Be realized by the image processing module software on computer to the process of LVDS signal, this software is the application software of writing on LabVIEW basis of software, for judging whether LVDS signal that chip main board to be measured exports meets the requirement of setting.
Computer is the application software of writing on LabVIEW basis of software for the analysis of audio signal, realizes the oscillography of audio signal, measures peak value, frequency etc., thus realize the test of audio signal, judge whether it meets the demands.
In another embodiment, in order to reduce wiring, the control of discharge end of described electrochemical capacitor control of discharge module patches pin by discharging with the electrochemical capacitor on needle plate after described pneumatic needle-bar control module switching and is connected; The feeder ear of chip main board supply module to be measured also patches pin by powering with the chip main board to be measured on needle plate after pneumatic needle-bar control module switching and is connected.
Further, the short-circuit test signal of Multifunctional control module, ICT test signal, distant control function test signal, press key function testing signal, current supply circuit voltage test signal and FCT test signal by patching pin with the short-circuit test on needle plate respectively after described audio-video signal module switching, ICT test patch pin, distant control function test patch pin, press key function testing patches pin, current supply circuit voltage tester patches pin, FCT tests and patches pin and be connected.Described pneumatic needle-bar control module, electrochemical capacitor control of discharge module and chip main board supply module three module to be measured are connected with the signal of computer to be transferred by Multifunctional control module and realize.And described Multifunctional control module carries out handshaking and signal converting by RS232 interface and computer.
In order to protect the electrical safety of LVDS capture card; in another embodiment; the present invention also comprises LVDS protector, and the scsi interface of described LVDS capture card is connected with the output of described LVDS protector, and the input of LVDS protector is connected with the LVDS signal plug of chip main board to be measured.
In still another embodiment of the process, at least one redundancy electrolysis capacitor discharge control module is also comprised; The control of discharge end of described redundancy electrolysis capacitor discharge control module patches pin by discharging with the other electrochemical capacitor on needle plate after pneumatic needle-bar control module or the switching of audio-video signal module and is connected, for controlling other electrochemical capacitor electric discharge on mainboard, namely the electric capacity in main power circuit beyond maximum electrochemical capacitor, such as it exports the electrochemical capacitor of 60V direct voltage; Same, described redundancy electrolysis capacitor discharge control module also has signal with computer and is connected, and realizes capacitor discharge under control of the computer.
In order to reduce device fabrication cost, described needle plate is connected with needle-bar framework removably.Like this when chip main board converts, whole needle-bar need not be rectified and improved, and only need needle plate quick-replaceable to be suitable model, also improve operating efficiency.
In another embodiment, also comprise the connection line of the auxiliary plate part (as 3D function dash receiver, RF remote-controlled plate etc.) except TV integrated machine chip main board, the connection line of described auxiliary plate part is connected by the pin that patches on described needle plate with the interface between chip main board to be measured.
Set forth the lower course of work of the present invention below again, it comprises:
S1: workman opens computer, enters the LabVIEW test program interface of computer, selects chip main board test procedure document to be measured, allow testing equipment be operated in test wait state.
S2: chip main board to be measured is placed on the needle plate of testing equipment needle-bar by workman, close needle-bar sky plate, by computer control needle-bar jack-up, then starts test by computer.
S3: the electrochemical capacitor of computer-controlled instrumentation to chip main board to be measured discharges.
S4: testing equipment carries out short-circuit test to the current supply circuit of chip main board to be measured, if without short circuit, then performs S5 and subsequent step thereof successively until S10; If there is short circuit, then perform S11.
S5: testing equipment is tested the distant control function of chip main board to be measured, if function is normal, then performs S6 and subsequent step successively until S10; Otherwise perform S11.
S6: testing equipment, to the press key function testing of chip main board to be measured, if function is normal, then performs S7 and subsequent step until S10 successively; Otherwise perform S11.
S7: testing equipment, to the current supply circuit voltage tester of chip main board to be measured, if magnitude of voltage is normal, then performs S8 and subsequent step until S10 successively; Otherwise perform S11.
S8: equipment carries out ICT test to the key element of chip main board to be measured, and judge whether described ICT measured value exceeds normal range (NR); If ICT measured value belongs to normal range (NR), then perform S9 and subsequent step thereof successively until S10; If ICT measured value exceeds normal range (NR), then perform S11.
S9: testing equipment adds 220V AC power to chip main board to be measured and starts FCT functional test; If FCT testing result is abnormal, closes chip main board 220V AC power to be measured and electrochemical capacitor is discharged, then performing S11, if testing result normally, is closed chip main board 220V AC power to be measured and discharged to electrochemical capacitor and perform S10.
S10: screen display waits for that next block is tested; Simultaneous computer controls needle-bar and performs " decline " action, and workman opens needle-bar sky plate, takes out the machine core board to be measured of test passes from the needle plate of needle-bar.As continued the test of next block, again perform from S2; Otherwise exit LabVIEW test program, shut down computer.
S11: workman performs down maneuver by computer control needle-bar, and workman opens needle-bar sky plate, takes out short trouble plate send mechanic position from the needle plate of needle-bar.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (10)
1. a TV integrated machine chip main board testing equipment, is characterized in that, comprise pneumatic needle-bar, be provided with the computer of LVDS capture card, pneumatic needle-bar control module, electrochemical capacitor control of discharge module, chip main board supply module to be measured, Multifunctional control module, audio-video signal module and AD collector;
Wherein,
Pneumatic needle-bar control module is for controlling the needle plate lifting of pneumatic needle-bar; Described needle plate has and patches pin, described in patch pin and to be connected with the signal of chip main board to be measured for realizing described testing equipment and to be electrically connected;
Control of discharge end and the electrochemical capacitor on needle plate of electrochemical capacitor control of discharge module discharge and patch pin and be connected, for controlling mainboard By Electrolysis capacitor discharge;
Chip main board supply module to be measured and the chip main board to be measured on needle plate are powered and are patched pin and be connected, for powering to chip main board to be measured;
Multifunctional control module and the short-circuit test on needle plate patch pin, ICT test patch pin, distant control function test patch pin, press key function testing patches pin, current supply circuit voltage tester patches pin, FCT tests and patches pin and be all connected, for realizing the short-circuit test of mainboard, ICT test, distant control function test, press key function testing, current supply circuit voltage tester and FCT test;
Audio-video signal module and the audio frequency and video on needle plate export and patch pin and be connected, and provide audio-video signal for receiving audio-video signal that audio-video signal source exports and exporting to chip main board to be measured; Audio-video signal module also patches pin with the audio signal on needle plate input and is connected, and for receiving the audio signal that chip main board to be measured exports, exports to AD collector after carrying out level conversion to described audio signal;
AD collector has signal with audio-video signal module and is connected, and for receiving the audio signal after level conversion, carries out AD sampling to it, and by sampling, the audio signal obtained exports to computer;
The LVDS signal that LVDS capture card on computer exports for gathering chip main board to be measured, then by described LVDS Signal transmissions to computer;
Described computer also all has signal be connected with described pneumatic needle-bar control module, electrochemical capacitor control of discharge module, chip main board supply module to be measured, Multifunctional control module; For controlling pneumatic needle-bar control module, electrochemical capacitor control of discharge module and chip main board supply module to be measured work, for receiving and showing the testing result that Multifunctional control module exports, and for carrying out analysiss also display analysis result to the LVDS signal received and audio signal.
2. a kind of TV integrated machine chip main board testing equipment according to claim 1, it is characterized in that, the short-circuit test signal of Multifunctional control module, ICT test signal, distant control function test signal, press key function testing signal, current supply circuit voltage test signal and FCT test signal by patching pin with the short-circuit test on needle plate respectively after described audio-video signal module switching, ICT test patch pin, distant control function test patch pin, press key function testing patches pin, current supply circuit voltage tester patches pin, FCT tests and patches pin and be connected.
3. a kind of TV integrated machine chip main board testing equipment according to claim 1 and 2, it is characterized in that, described pneumatic needle-bar control module, electrochemical capacitor control of discharge module and chip main board supply module three module to be measured are connected with the signal of computer to be transferred by Multifunctional control module and realize.
4. a kind of TV integrated machine chip main board testing equipment according to claim 1, it is characterized in that, described Multifunctional control module carries out handshaking and signal converting by RS232 interface and computer.
5. a kind of TV integrated machine chip main board testing equipment according to claim 1; it is characterized in that; also comprise LVDS protector; the scsi interface of described LVDS capture card is connected with the output of described LVDS protector, and the input of LVDS protector is connected with the LVDS signal plug of chip main board to be measured.
6. a kind of TV integrated machine chip main board testing equipment according to claim 1, it is characterized in that, the control of discharge end of described electrochemical capacitor control of discharge module patches pin by discharging with the electrochemical capacitor on needle plate after described pneumatic needle-bar control module switching and is connected; The feeder ear of chip main board supply module to be measured patches pin by powering with the chip main board to be measured on needle plate after pneumatic needle-bar control module switching and is connected.
7. a kind of TV integrated machine chip main board testing equipment according to claim 1,2 or 5, is characterized in that, also comprises at least one redundancy electrolysis capacitor discharge control module; The control of discharge end of described redundancy electrolysis capacitor discharge control module patches pin by discharging with the other electrochemical capacitor on needle plate after pneumatic needle-bar control module or the switching of audio-video signal module and is connected, for controlling other electrochemical capacitors electric discharge on mainboard; Described redundancy electrolysis capacitor discharge control module also has signal with computer and is connected, and receiving computer controls.
8. a kind of TV integrated machine chip main board testing equipment according to claim 1, it is characterized in that, described needle plate is connected with needle-bar framework removably.
9. a kind of TV integrated machine chip main board testing equipment according to claim 1, is characterized in that, computer carries out analysis and display analysis result by LabVIEW software to the LVDS signal received and audio signal.
10. a kind of TV integrated machine chip main board testing equipment according to claim 1, it is characterized in that, also comprise the connection line of the auxiliary plate part except TV integrated machine chip main board, the connection line of described auxiliary plate part is connected by the pin that patches on described needle plate with the interface between chip main board to be measured; Described auxiliary plate part comprises 3D function dash receiver and RF remote-controlled plate.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103905817B (en) * | 2014-04-17 | 2016-01-13 | 中国电子科技集团公司第三研究所 | Based on the video automatic measuring system of LabVIEW and VideoMASTER |
| CN103997644B (en) * | 2014-06-05 | 2016-02-10 | 广州朗国电子科技有限公司 | Liquid crystal TV set controls mainboard automatic testing equipment |
| CN104506859A (en) * | 2014-12-31 | 2015-04-08 | 深圳创维－Rgb电子有限公司 | Television core test circuit and system |
| CN110494036A (en) * | 2019-09-29 | 2019-11-22 | 格力电器（武汉）有限公司 | Machine core test device and machine core test method |
| CN117214692A (en) * | 2023-04-28 | 2023-12-12 | 东莞市小强电子科技有限公司 | Multifunctional electric performance testing system and testing process for brushless motor |
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