CN102207536A - Signal detection device for circuit board - Google Patents
Signal detection device for circuit board Download PDFInfo
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- CN102207536A CN102207536A CN201010141499XA CN201010141499A CN102207536A CN 102207536 A CN102207536 A CN 102207536A CN 201010141499X A CN201010141499X A CN 201010141499XA CN 201010141499 A CN201010141499 A CN 201010141499A CN 102207536 A CN102207536 A CN 102207536A
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Abstract
The invention relates to a signal detection device for a circuit board, which comprises a complex programmable logic device, a connection interface and a debug card. The complex programmable logic device is arranged on the circuit board and is used for receiving a plurality of detection signals of the circuit board and generating a plurality of corresponding coding signals. The connection interface is arranged on the circuit board, is connected to the complex programmable logic device and is used for transmitting the plurality of coding signals. The debug card is connected to the circuit board via the connection interface, and comprises a decoding unit and a display unit. The decoding unit is connected to the connection interface, receives the plurality of coding signals and decodes the plurality of coding signals to generate a plurality of decoding signals. The display unit is connected to the decoding unit, and receives and displays the plurality of decoding signals. By the signal detection device provided by the invention, the detection time of the circuit board (main board) can be effectively reduced, and the detection and maintenance efficiency can be improved.
Description
Technical field
The present invention relates to a kind of signal supervisory instrument, relate in particular to a kind of signal supervisory instrument of circuit board.
Background technology
Along with the progress of science and technology, the popularity rate of computing machine (for example server, notebook etc.) and utilization rate also significantly promote, because various factors makes computing machine can produce some defective productss in a large amount of manufacturing processes.And computing machine is all very complicated usually huge, and the part on the mainboard (motherboard) is various and close and numerous.
In general, the employed mainboard of computing machine or servomechanism all needs the checking by electrifying timing sequence (powersequence), so that determine whether mainboard can normally use.Therefore the test item of electrifying timing sequence is very important for the Test Engineer carries out the mainboard detection.
In addition, with regard to this test item of electric power starting program, mainly be to be used for verifying mainboard when electric power starting (power-on), whether the voltage quasi position of the voltage to be measured of each on the mainboard is correct, and whether the time point of the accurate position transition of the voltage logic between each voltage to be measured is correct.If the voltage quasi position of each voltage to be measured is correct and each voltage to be measured between the time point of the accurate position transition of voltage logic correct, the expression mainboard can normally use; If the voltage quasi position of each voltage to be measured is incorrect and each voltage to be measured between the time point of the accurate position transition of voltage logic incorrect, the expression mainboard can not normally use.In addition, the multiple signal in the mainboard is also explained by voltage form.
The Test Engineer checks that the voltage to be measured on the mainboard normally utilizes universal electric meter to detect one by one to have or not on the mainboard supply voltage unusual or utilizing oscillograph to check on the mainboard has or not anomalous signals.At last, according to above-mentioned detected abnormal voltage or signal and circuit theory diagrams or layout (layout) figure, interlock circuit is analyzed to find out problem points again.
Owing to need the voltage of detection and signal (for example operating voltage on the mainboard, power supply good signal or reset signal etc.) a lot,, cause detection efficiency to reduce if measuring above-mentioned voltage to be measured and signal one by one will expend many time costs in regular turn.And voltage to be measured and signal are various and complicated, make the Test Engineer forget detection order easily and need and measure again, so also can waste too much detection time, and allow the detection deleterious.
Summary of the invention
The invention provides a kind of signal supervisory instrument of circuit board,, improve and detect and maintenance efficiency in order to reduce the detection time of circuit board (mainboard) effectively.
The invention provides a kind of signal supervisory instrument of circuit board, comprise complex programmable logic device, connecting interface and Debug Card.Complex programmable logic device is disposed on the described circuit board, in order to receiving a plurality of detection signals of described circuit board, and produces corresponding a plurality of coded signals.Connecting interface is disposed on the described circuit board, and is connected to described complex programmable logic device, in order to transmit described a plurality of coded signal.Debug Card is connected to described circuit board by described connecting interface, and described Debug Card comprises decoding unit and display unit.Decoding unit is connected to described connecting interface, receives described a plurality of coded signal, and described a plurality of coded signals are decoded, to produce a plurality of decoded signals.Display unit is connected to described decoding unit, receives and shows described a plurality of decoded signal.
In one embodiment of this invention, described a plurality of detection signal comprises power initiation status signal, power initiation initialize signal and light emitting diode indicator signal.
In one embodiment of this invention, described display unit is a LCD.
In one embodiment of this invention, described connecting interface is that (serialgeneral purpose input output abbreviates as: SGPIO) interface the general input and output of serial.
In one embodiment of this invention, described circuit board is a mainboard.
The embodiment of the invention is by a plurality of detection signals of complex programmable logic device circuit board for receiving (mainboard), and corresponding generation coded signal.Then, coded signal is sent to decoding unit by connecting interface and decodes, and shows the information that detects at display unit.Thus, user (Test Engineer) just can confirm which signal on the circuit board goes wrong by the detection information that display unit shows, with manpower, time and the cost of saving detection effectively, and the detection speed of lifting fast-circuit plate.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and be described in detail below in conjunction with the accompanying drawings.
Description of drawings
Fig. 1 is depicted as the calcspar of signal supervisory instrument of the circuit board of one embodiment of the invention.
The main element symbol description:
100: signal supervisory instrument; 110: complex programmable logic device;
120: connecting interface; 130: Debug Card;
131: decoding unit; 132: display unit;
140: circuit board.
Embodiment
Fig. 1 is depicted as the calcspar of signal supervisory instrument of the circuit board of one embodiment of the invention.In the present embodiment, circuit board 140 is the mainboard (motherboard) of a computing machine.Please refer to Fig. 1, signal supervisory instrument 100 comprises complex programmable logic device 110, connecting interface 120 and Debug Card (debugcard) 130.
Complex programmable logic device 110 is disposed on the circuit board 140, in order to a plurality of detection signals of circuit board for receiving 140, and produces corresponding a plurality of coded signals.In the present embodiment, above-mentioned detection signal can comprise startup power state signal (for example good (power good) signal of power supply), start power supply initialize signal ((reset) signal of for example resetting) and light emitting diode indicator signal (for example port80 light emitting diode indicator signal).Wherein, port80 light emitting diode indicator signal can be produced by the south bridge wafer (not shown) that is disposed on the circuit board (mainboard) 140.In addition, above-mentioned coded signal for example is 8 bits (bit), i.e. " 00000000 "～" 11111111 ", that is to say, the corresponding tables of complex programmable logic device 110 meeting configuration detection signals and coded signal, and this corresponding tables can be by in advance definition of user, and visual demand is adjusted voluntarily or changed.
For instance, when complex programmable logic device 110 receives the startup power state signal, then can produce coded signal " 00000000 "; Start the power supply initialize signal when complex programmable logic device 110 receives, then can produce coded signal " 00000010 "; When complex programmable logic device 110 receives port80 light emitting diode indicator signal, then can produce " 00001000 ".Above-mentioned example only is one embodiment of the present invention, but does not limit form of the present invention.
Connecting interface 120 is disposed on the circuit board 140 and is connected to complex programmable logic device 110, in order to transmit above-mentioned coded signal.In the present embodiment, connecting interface for example is the general input and output of serial port (serial general purpose input output) interface.
Debug Card 130 can be connected to circuit board 140 by connecting interface 120, and comprises decoding unit 131 and display unit 132.Decoding unit 131 (for example for microcontroller) is connected to connecting interface 120, in order to receiving above-mentioned coded signal, and above-mentioned coded signal is decoded, to produce decoded signal.Display unit 132 is connected to decoding unit 131, in order to receive and the demonstration decoded signal.In the present embodiment, display unit 132 for example is a LCD, informs the situation of user's testing circuit plate 140 so that show the information of decoded signal.
Next, the operation of an example clear signal pick-up unit 100 will be enumerated.
At first, when circuit board (mainboard) 140 when electric power starting (power-on), can produce different voltages and signal in regular turn, make circuit board 140 normally to use, and above-mentioned voltage and signal are the detection signal of signal supervisory instrument 100 required detections.So complex programmable logic device 110 just can receive above-mentioned detection signal, and corresponding generation coded signal (for example above-mentioned coded signal " 00000000 ", " 00000010 ", " 00001000 ").Afterwards, coded signal can be sent to the decoding unit 131 of Debug Card 130 by connecting interface 120, with the operation of advancing to decode, and produces corresponding decoded signal.Then, after display unit 132 receives above-mentioned decoded signal, decoded signal can be shown.
For instance, hypothesis decoding unit 131 receives coded signal " 00000000 ", then produce decoded signal " power good ", then demonstrate " power good " by display unit 132, it is normal condition that expression starts power state signal (power supply good signal); The hypothesis decoding unit receives coded signal " 00000010 ", then produces decoded signal " reset ", then demonstrates " reset " by display unit 132, and it is normal condition that expression starts power supply initialize signal (reset signal), and all the other are then analogized.
But, if decoding unit 131 receives coded signal " 00000000 ", " 00000010 " and does not receive " 00001000 ", then can produce decoded signal " power good ", " reset ", then demonstrate " power good ", " reset " by display unit 132, and when showing " port80 ", expression signal supervisory instrument 100 does not receive " the port80 light emitting diode indicator signal " that is produced on the circuit board 140.In 0 be, user (Test Engineer) just can determine which signal on the circuit board 140 goes wrong by display unit 132 shown information, then just can overhaul at the interlock circuit that causes signal to go wrong, thus, just can save manpower, time and cost effectively, to promote the detection speed of circuit board 140.
In sum, the embodiment of the invention is by a plurality of detection signals of complex programmable logic device circuit board for receiving (mainboard), and corresponding generation coded signal.Then, coded signal is sent to decoding unit by connecting interface and decodes, and shows the information that detects at display unit.Thus, user (Test Engineer) just can confirm which signal on the circuit board goes wrong by the detection information that display unit shows, with manpower, time and the cost of saving detection effectively, and the detection speed of lifting fast-circuit plate.
Though the present invention discloses as above with embodiment; but it is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; can suitably change or be equal to replacement, so protection scope of the present invention should be as the criterion with the scope that claims were defined.
Claims (5)
1. the signal supervisory instrument of a circuit board is characterized in that, comprising:
One complex programmable logic device is disposed on the described circuit board, in order to receiving a plurality of detection signals of described circuit board, and produces corresponding a plurality of coded signals;
One connecting interface is disposed on the described circuit board, and is connected to described complex programmable logic device, in order to transmit described a plurality of coded signal; And
One Debug Card be connected to described circuit board by described connecting interface, and described Debug Card comprises:
One decoding unit is connected to described connecting interface, receives described a plurality of coded signal, and described a plurality of coded signals are decoded, to produce a plurality of decoded signals; And
One display unit is connected to described decoding unit, receives and shows described a plurality of decoded signal.
2. the signal supervisory instrument of circuit board according to claim 1 is characterized in that, described a plurality of detection signals comprise power initiation status signal, power initiation initialize signal and light emitting diode indicator signal.
3. the signal supervisory instrument of circuit board according to claim 1 is characterized in that, described display unit is a LCD.
4. the signal supervisory instrument of circuit board according to claim 1 is characterized in that, described connecting interface is the serial universal input/output interface.
5. the signal supervisory instrument of circuit board according to claim 1 is characterized in that, described circuit board is a mainboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010141499XA CN102207536A (en) | 2010-03-31 | 2010-03-31 | Signal detection device for circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010141499XA CN102207536A (en) | 2010-03-31 | 2010-03-31 | Signal detection device for circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102207536A true CN102207536A (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010141499XA Pending CN102207536A (en) | 2010-03-31 | 2010-03-31 | Signal detection device for circuit board |
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| CN (1) | CN102207536A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181964A (en) * | 2013-05-28 | 2014-12-03 | 英业达科技有限公司 | Power supply control device and method |
| CN104297664A (en) * | 2013-07-19 | 2015-01-21 | 鸿富锦精密工业(武汉)有限公司 | Mainboard time sequence measuring device and method |
| CN106445858A (en) * | 2015-08-13 | 2017-02-22 | 联想(北京)有限公司 | Information processing method, information processing module and electronic device |
| WO2017035927A1 (en) * | 2015-09-01 | 2017-03-09 | 沈阳拓荆科技有限公司 | Interlocking circuit test equipment and test method |
-
2010
- 2010-03-31 CN CN201010141499XA patent/CN102207536A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181964A (en) * | 2013-05-28 | 2014-12-03 | 英业达科技有限公司 | Power supply control device and method |
| CN104181964B (en) * | 2013-05-28 | 2016-01-20 | 英业达科技有限公司 | Power control and method |
| CN104297664A (en) * | 2013-07-19 | 2015-01-21 | 鸿富锦精密工业(武汉)有限公司 | Mainboard time sequence measuring device and method |
| CN106445858A (en) * | 2015-08-13 | 2017-02-22 | 联想(北京)有限公司 | Information processing method, information processing module and electronic device |
| CN106445858B (en) * | 2015-08-13 | 2020-06-23 | 联想(北京)有限公司 | Information processing method, information processing module and electronic equipment |
| WO2017035927A1 (en) * | 2015-09-01 | 2017-03-09 | 沈阳拓荆科技有限公司 | Interlocking circuit test equipment and test method |
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Application publication date: 20111005 |