CN101153889A - Malfunction detection system and method thereof - Google Patents
Malfunction detection system and method thereof Download PDFInfo
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- CN101153889A CN101153889A CNA2006101412377A CN200610141237A CN101153889A CN 101153889 A CN101153889 A CN 101153889A CN A2006101412377 A CNA2006101412377 A CN A2006101412377A CN 200610141237 A CN200610141237 A CN 200610141237A CN 101153889 A CN101153889 A CN 101153889A
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Abstract
A fault detection system and method provides a test equipment connected with a key unit, wherein, the test equipment comprises a touch unit connected with the first interface and the second interface of the key unit. The method includes at least a first interface which realizes electric connection of a control module with the key unit, wherein, the control module transmits a control signal which controls the motion of the key unit to the first interface; moreover, the touch unit can realize electric conduction of the key unit with the corresponding first interface and the second interface so as to ensure that the corresponding second interface of the key unit outputs a back signaling; a receiving module is in electric connection with the second interface to receive the back signaling after the control module transmits the control signal; moreover, a processing module, according to the control signal transmitted by the control module and the back signaling received by the receiving module, analyzes whether the back signaling is identical to the control signal and makes judgment that the key unit has line fault when the back signaling is different from the control signal.
Description
Technical field
The present invention relates to a kind of fault detection technique, more specifically, relate to a kind of fault detection system and method thereof of the line status in order to the many push-button units on the testing circuit plate.
Background technology
Progress along with science and technology, computer has been widely used in different field, computer is notebook computer especially, generally dispose a switching motherboard (switch board), and group is provided with many push-button units on this switching motherboard, carry out machine open/close (Power on/off) in order to auxiliary this notebook computer, computer reset (reset), the brightness size adjustment, associative operations such as volume adjusting, open circuit fault appears in a certain button in above-mentioned push-button unit, to influence the corresponding function of computer (such as can't normal boot-strap, can't reset etc.) normal use, so, in a large amount of shipment of this switching motherboard with follow-up carry out the computer components assembly operation before, this switching motherboard is carried out corresponding fault detect just seems particularly important.
At present, industry generally adopts testing apparatus to carry out the switching motherboard failure detection operations with the mode that for example oscillographic testing tool matches, this testing apparatus provides load bearing seat and is positioned over this load bearing seat top and apart from this load bearing seat tool many shake-up unit to the push-button unit on should switching motherboard at regular intervals, and each push-button unit all has four pins (pin) on this switching motherboard, and by these four pins in twos short circuit form first interface and second interface, simultaneously, on this switching motherboard respectively first interface of this push-button unit be serially connected to form common terminal, in testing process, in advance with the common terminal ground connection of this switching motherboard, simultaneously this switching motherboard is positioned over this load bearing seat top, and the signal wire of this testing tool is electrically connected to respectively second interface of this push-button unit, when operating personnel push a certain shake-up unit downwards and electrically conduct to touch first interface that makes its corresponding key unit and second interface, detection that can be by this testing tool is to judge the line status of this push-button unit, when this testing tool shows that this push-button unit is output as high potential signal, judge that then open circuit fault appears in this push-button unit circuit, when this testing tool shows that this push-button unit is output as low-potential signal, judge that then the circuit of this push-button unit is normal.Treat that all push-button unit tests finish, and then excise the ground state of the common terminal of this switching motherboard.
Whether arbitrary push-button unit that can detect apace on the switching motherboard by above-mentioned detection mode exists open circuit fault, so, but ignored an important circuit hidden danger (being switching motherboard common terminal problem with grounding), at surface mount (Surface Mount Technology; When SMT) re-packing; to this switching motherboard, cause tin excessive during corresponding contact at the pin of this push-button unit of welding because of operating personnel's error sometimes; the pin (the especially pin at common terminal place) that causes this push-button unit with cover on the push-button unit in order to protecting this push-button unit and the metal covering short circuit of ground connection, and then cause the common terminal ground connection of this push-button unit.In case first interface of arbitrary push-button unit of this switching motherboard (being common terminal) ground connection, to cause the key combination function of this switching motherboard unusual phenomenon to occur, for example, when operating personnel only press the wherein push-button unit of this switching motherboard, (operating personnel are this push-button unit of start not) situation of (promptly touching two push-button unit starts simultaneously) of also being pressed produces may to cause that another push-button unit is arranged simultaneously.But, because above-mentioned detection mode is in advance with the common terminal ground connection of this switching motherboard, therefore, can't detect the circuit hidden danger whether this switching motherboard exists common terminal ground connection, when the follow-up switching motherboard of this circuit hidden danger that will exist is assembled in the notebook computer, the operation of whole computer is undesired with causing, fault detect this moment expanded range is to whole computer, not only increase the difficulty of fault detect, simultaneously, also increased the detection cost relatively.
In sum, how to propose a kind of fault detection system and method thereof that solves the shortcoming of prior art, real is the present technical issues that need to address.
Summary of the invention
In view of the shortcoming of above-mentioned prior art, the invention provides a kind of fault detection system and method thereof of line status of energy complete detection push-button unit.
The present invention also provides a kind of fault detection system and method thereof, can effectively avoid having short trouble because of failing in time to detect push-button unit in the prior art, cause the fault of this push-button unit is expanded to the fault of whole computer, and then increase the difficulty of fault detect.
The present invention provides a kind of fault detection system and method thereof again, can reduce and detect cost.
For reaching above-mentioned purpose and other purposes, the invention provides a kind of fault detection system, be that overlap joint is to having the testing apparatus of the push-button unit of first interface and second interface in order to test, this testing apparatus comprises first interface that electrically connects this push-button unit when being used to be touched and the shake-up unit of second interface, this fault detection system comprises at least: control module, be electrically connected to first interface of this push-button unit, in order to send one in order to control this first interface that controls signal to of this push-button unit action, and touch by this shake-up unit this push-button unit and this corresponding first and second interface are electrically conducted, export a back-signalling to make corresponding second interface of this push-button unit; Receiver module is second interface that is electrically connected to this push-button unit, after being used to this control module and sending aforesaid control signal, receives this back-signalling that this push-button unit is exported by this second interface; And processing module, be in order to according to control signal that this control module sent and the back-signalling that this receiver module received, whether with this control signal identical, and when this control signal and this back-signalling are inequality, judge that line fault appears in this push-button unit if analyzing this back-signalling.
In fault detection system of the present invention, respectively first interface of this push-button unit is to be serially connected to form common terminal.This line fault can be line short fault or open circuit fault, and this line short fault shows as this common terminal ground connection.This control signal and this back-signalling are to can be high potential signal or low-potential signal.
More specifically, this processing module is high potential signal and this back-signalling when being low-potential signal analyzing this control signal also, judges that promptly this push-button unit circuit is a short trouble; And be low-potential signal and this back-signalling when being high potential signal in this control signal, judge that then this push-button unit circuit is an open circuit fault; And, when the electric potential signal of this back-signalling all is equal to the electric potential signal of this control signal, judge that then this push-button unit circuit is normal when control signal that this control module sent is during for noble potential or low-potential signal.
In addition, fault detection system of the present invention also comprises in order to electrically connect the first electric connection unit of this control module and this first interface, and in order to electrically connect the second electric connection unit of this second interface and this receiver module, wherein, this first electric connection unit and this second electric connection unit are cables.
For reaching above-mentioned identical purpose, the present invention also provides a kind of fault detection method, overlap joint is to having the testing apparatus of the push-button unit of first interface and second interface in order to test, this testing apparatus comprises first interface that electrically connects this push-button unit when being used to be touched and the shake-up unit of second interface, this fault detection method may further comprise the steps at least: (1) makes a control module be electrically connected to first interface of this push-button unit, in order to send one in order to control this first interface that controls signal to of this push-button unit action, and touch by this shake-up unit this push-button unit and this corresponding first and second interface are electrically conducted, export a back-signalling to make corresponding second interface of this push-button unit; (2) make a receiver module be electrically connected to second interface of this push-button unit, after being used to this control module and sending aforesaid control signal, receive this back-signalling that this push-button unit is exported by this second interface; And (3) make a processing module according to control signal that this control module sent and the back-signalling that this receiver module received, whether analyze this back-signalling identical with this control signal, and when this control signal and this back-signalling are inequality, judge that line fault appears in this push-button unit.
In fault detection method of the present invention, respectively first interface of this push-button unit is to be serially connected to form common terminal.This line fault can be line short fault or open circuit fault, and this line short fault shows as this common terminal ground connection.This control signal and this back-signalling can be high potential signal or low-potential signal.
In fault detection method of the present invention, also comprise a display, interconnect with this processing module, in order to show this judged result.
In an embodiment of fault detection method of the present invention, above-mentioned determining step also comprises: when (4) are high potential signal in this control signal, analyze the electric potential signal whether this back-signalling is equal to this control signal, if not, then proceed to step (5), if then proceed to step (6); (5) judge that short trouble appears in this push-button unit circuit, show corresponding judged result with output; (6) be back to step (1), and make control module send the low-potential signal control signal, then execution in step (2); (7) analyze the electric potential signal whether this back-signalling is equal to this control signal, if, then proceed to step (8), if not, then proceed to step (9); (8) judge that this push-button unit circuit for normal, shows corresponding judged result with output; And (9), judge that open circuit fault appears in this push-button unit circuit, show corresponding judged result with output.
In another embodiment of fault detection method of the present invention, above-mentioned determining step also comprises: when (10) are low-potential signal in this control signal, analyze the electric potential signal whether this back-signalling is equal to this control signal, if not, then proceed to step (11), if then proceed to step (12); (11) judge that open circuit fault appears in this push-button unit circuit, show corresponding judged result with output; (12) be back to step (1), and make control module send the high potential signal control signal, then execution in step (2); (13) analyze the electric potential signal whether this back-signalling is equal to this control signal, if, then proceed to step (14), if not, then proceed to step (15); (14) judge that this push-button unit circuit for normal, shows corresponding judged result with output; And (15), judge that short trouble appears in this push-button unit circuit, show corresponding judged result with output.
In addition, electrical connection between this control module and this first interface is to electrically connect the unit by first to reach, and the electrical connection between this second interface and this receiver module is reached by the second electric connection unit, wherein, this first electric connection unit and this second electric connection unit are cables.
In another embodiment of fault detection method of the present invention, this judged result is by being shown with the interconnective display of this processing module.
Than prior art, fault detection system of the present invention and method thereof mainly are first and second interfaces that control module and receiver module is electrically connected to push-button unit respectively, and by control signal to this push-button unit of this control module transmission in order to the switch motion of control specific keys, to receive back-signalling by this receiver module, and then supply processing module according to control signal that this control module sent and the back-signalling that this receiver module received, analyze this back-signalling and whether this control signal is equal to, and in this control signal and unequal while of this back-signalling, judge that line fault appears in this push-button unit, and can further judge open circuit fault or short trouble.So, need not first interface of this push-button unit ground connection in advance can be detected this push-button unit and whether has open circuit fault by the present invention, also can detect whether there is short trouble, reach the effect of the line status that detects push-button unit; Simultaneously, can detect this push-button unit early by the present invention and whether have short trouble, can effectively avoid having short trouble because of failing to detect push-button unit in the prior art, cause the follow-up switching motherboard of this circuit hidden danger that will exist to be assembled in the notebook computer, expand to the fault of whole computer with fault with this push-button unit, and then the difficulty of increase fault detect, and reduce relatively and detect cost, so the preferable industrial utilization of the real tool of the present invention.
Description of drawings
Fig. 1 is the basic framework block schematic diagram that shows fault detection system of the present invention;
Fig. 2 is fault detection method of the present invention is carried out fault detect by a fault detection system of the present invention process flow diagram; And
Fig. 3 is fault detection method of the present invention is carried out another embodiment of fault detect by a fault detection system of the present invention process flow diagram.
The main element symbol description
1 fault detection system
11 control modules
12 first electrically connect the unit
13 second electrically connect the unit
14 receiver modules
15 processing modules
16 displays
3 push-button units
31 first interfaces
32 second interfaces
33 keyswitches
5 testing apparatuss
51 touch the unit
S10～S17, S20～S27 step
Embodiment
Below be that those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this instructions by specific instantiation explanation embodiments of the present invention.The present invention also can be implemented or be used by other different instantiations, and the every details in this instructions also can be based on different viewpoints and application, carries out various modifications and change under the spirit of the present invention not deviating from.
Seeing also Fig. 1, is the basic framework block schematic diagram that shows fault detection system of the present invention.As shown in the figure, fault detection system 1 of the present invention is that overlap joint is to having the testing apparatus 5 of the push-button unit 3 of first interface 31 and second interface 32 in order to test, this testing apparatus 5 comprises first interface 31 that electrically connects this push-button unit 3 when being used to be touched and the shake-up unit 51 of second interface 32, whether can when being touched, this push-button unit 3 normally electrically conduct by this first interface 31 and second interface 32, and whether normal with the function of judging this push-button unit 3.
In present embodiment, this push-button unit 3 comprises a plurality of keyswitches 33, and this shake-up unit 51 has the quantity identical with this keyswitch, and each touches unit 51 all corresponding to specific keyswitch 33.And in other embodiment, the visual actual needs of the quantity of this keyswitch 33 is provided with, and this quantity of touching unit 51 is identical.In addition, this first interface 31 and second interface 32 are golden fingers, and wherein each golden finger all electrically connects with corresponding respectively this keyswitch 33.In addition, first interface 31 of respectively this keyswitch 33 of this push-button unit 3 is serially connected to form common terminal (common port).
In present embodiment, the switching motherboard (switchboard) that this push-button unit 3 is notebook computers.More specifically, this push-button unit 3 is positioned in this testing apparatus 5 and corresponding respectively this shake-ups unit 51 under, also be a shake-up of each keyswitch 33 correspondence unit 51.In testing process, push this shake-up unit 51 downwards and electrically conduct to touch first interface 31 and second interface 32 that make its corresponding key unit 3.
As shown in Figure 1, fault detection system 1 of the present invention is to comprise that control module 11, first electrically connects unit 12, second and electrically connects unit 13, receiver module 14 and processing module 15.In present embodiment, this control module 11, receiver module 14 and processing module 15 all are composition important documents of a microcontroller (not shown), but not as limit, also can be the electronic component that has with the function equivalent that respectively this module possessed.This first electric connection unit 12 and this second electric connection unit 13 are for example to be flexible flat cable (Flexible FlatCable; FFC), but not as limit, such as can realize respectively this keyswitch 33 and respectively this keyswitch 33 of this push-button unit 3 and the signal transmssion line of the electrical connection between this receiver module 14 of this control module 11 and this push-button unit 3, but all belong to practical range of the present invention.In present embodiment, this first electric connection unit 12 and this second electric connection unit 13 are the golden finger slot flexible flat cables that have corresponding to respectively this golden finger of this first interface 31 and second interface 32.
This control module 11 is first interfaces 31 that are electrically connected to this push-button unit 3 by this first electric connection unit 12, in order to send one in order to controlling signal to mutually of control specific keys switch 33 actions should specific keys switch 33 first interface 31, and touch by this shake-up unit 51 this specific keys switch 33 and this corresponding first and second interface 31,32 are electrically conducted, export back-signallings to this receiver module 14 to make these specific keys switch 33 corresponding second interfaces 32.In present embodiment, this control signal and this back-signalling can show as high potential signal or low-potential signal.
This receiver module 14 is electrically connected to second interface 32 of the specific keys switch 33 of this push-button unit 3 by this second electric connection unit 13, after being used to this control module 11 and sending aforesaid control signal, receive the back-signalling that the specific keys switch 33 of this push-button unit 3 is exported by this second interface 32.
The back-signalling that this processing module 15 is received in order to the control signal that sent according to this control module 11 and this receiver module 14, whether analyze this back-signalling identical with this control signal, and when this control signal and this back-signalling are inequality, judge that line fault appears in the specific keys switch 33 of this push-button unit 3.In present embodiment, this line fault can be line short fault or open circuit fault, and this line short fault shows as this common terminal ground connection.More specifically, this processing module 15 is high potential signal and this back-signalling when being low-potential signal analyzing this control signal, judges that promptly specific keys switch 33 circuits of this push-button unit 3 are short trouble; And be low-potential signal and this back-signalling when being high potential signal in this control signal, judge that then specific keys switch 33 circuits of this push-button unit 3 are open circuit fault; And when the control signal that is sent when this control module 11 is noble potential or low-potential signal, when the electric potential signal of this back-signalling all is equal to the electric potential signal of this control signal, judge that then specific keys switch 33 circuits of this push-button unit 3 are normal.In view of the above, can judge not only whether specific keys switch 33 circuits of this push-button unit 3 exist open circuit fault, can also judge whether the common terminal circuit of this switching motherboard exists short trouble.
Moreover, processing module 15 of the present invention also interconnects with a display 16, shown in order to this judged result is exported to this display 16, wherein, this display 16 can for example be LCD display, light-emitting diode display, OLED display, CRT monitor or plasma display panel etc., with operating personnel by the current line status of this display 16 specific keys switch of understanding these push-button units 3 directly perceived 33, when line fault occurring, can in time get rid of corresponding fault according to the type of line fault for operating personnel with specific keys switch 33 in this push-button unit 3.What should be specified is that the display mode of this judged result is not with above-mentioned described exceeding, and in other embodiment, can be shown by the mode as light-emittingdiode pilot lamp such as (LED) yet.
In addition, two types the fault (short trouble and open circuit fault) that may occur at specific keys switch 33 circuits of this push-button unit 3, by fault detection system 1 of the present invention carry out detecting operation at the detection object also different.Particularly, for the line broken circuit fault, because the keyswitch 33 of each push-button unit 3 all this type fault may occur on this switching motherboard, the keyswitch 33 that therefore needs to touch all push-button units 3 on this switching motherboard detects one by one.Relative, for the line short fault, because no matter the first interface ground connection of which push-button unit all can cause this type line fault on this switching motherboard,, can detect the type fault and whether exist so only need the keyswitch 33 of arbitrary this push-button unit 3 on this switching motherboard of shake-up.
See also Fig. 2, it is fault detection method of the present invention is carried out fault detect by an aforementioned fault detection system of the present invention process flow diagram.
As shown in the figure, at first carry out step S10, make control module 11 be electrically connected to first interface 31 of this push-button unit 3, be electrically connected to first interface 31 of this push-button unit 3 by this first electric connection unit 12, in order to send one in order to controlling signal to mutually of control specific keys switch 33 actions should specific keys switch 33 first interface 31, and touch by this shake-up unit 51 and to make this specific keys switch 33 and this corresponding first and second interface 31,32 electrically conduct, and make these specific keys switch 33 corresponding second interface, 32 outputs, one back-signallings to this receiver module 14.Then carry out step S11.
In step S11, make receiver module 14 be electrically connected to second interface 32 of the specific keys switch 33 of this push-button unit 3 by this second electric connection unit 13, after being used to this control module 11 and sending aforesaid control signal, receive the back-signalling that the specific keys switch 33 of this push-button unit 3 is exported by this second interface 32.Then carry out step S12.
In step S12, the back-signalling that the control signal that is sent according to this control module 11 and this receiver module 14 are received, whether with this control signal identical, if not if analyzing this back-signalling, represent that then this back-signalling is a low-potential signal, and proceed to step S131; If represent that then this back-signalling also is high potential signal, and proceed to step S132.
In step S131, judge that short trouble appears in specific keys switch 33 circuits of this push-button unit 3, in present embodiment, this line short fault is the common terminal ground connection that shows as this switching motherboard.Then carry out step S17.
In step S132, make control signal that this control module 11 sends switch to low-potential signal to first interface 31 that mutually should specific keys switch 33 by noble potential, and touch by this shake-up unit 51 this specific keys switch 33 and this corresponding first and second interface 31,32 are electrically conducted, make these specific keys switch 33 corresponding second interfaces 32 export back-signallings to this receiver module 14.Then carry out step S14.
In step S14, make this receiver module 14 receive the back-signalling that this second interface 32 is exported.Then carry out step S15.
In step S15, the back-signalling that the low-potential signal control signal that is sent according to this control module 11 and this receiver module 14 are received, whether the electric potential signal of analyzing this back-signalling and this control signal is equal to, at this moment, if, represent that then this back-signalling also is low-potential signal, and proceed to step S161; If not, represent that then this back-signalling is a high potential signal, and proceed to step S162.
In step S161, judge that specific keys switch 33 circuits of this push-button unit 3 are normal, at this moment, can confirm that not only there is open circuit fault in specific keys switch 33 circuits of this push-button unit 3, can also confirm that there is short trouble in the common terminal circuit of this switching motherboard.Then carry out step S17.
In step S162, judge that open circuit fault appears in specific keys switch 33 circuits of this push-button unit 3, then carry out step S17.
In step S17, output also shows corresponding judged result (line broken circuit fault, line short fault or circuit normal condition), and in present embodiment, this judged result is shown by this display 16.
What need be illustrated is that for the line broken circuit fault, because the keyswitch 33 of each push-button unit 3 all this type fault may occur on this switching motherboard, the keyswitch 33 that therefore needs to touch all push-button units 3 on this switching motherboard detects one by one herein.Relative, for the line short fault, because no matter the first interface ground connection of which push-button unit all can cause this type line fault on this switching motherboard, so only need to touch the keyswitch 33 of arbitrary this push-button unit 3 on this switching motherboard, can detect the type fault and whether have (step S10 to S17), other keyswitches 33 for this push-button unit 3 on this switching motherboard of subsequent detection, only need to consider whether to exist the open circuit fault problem, promptly only need carry out the step S132 to S17 shown in the frame of broken lines as shown in Figure 2 gets final product, in other words, only need make control module 11 send the low-potential signal control signal, and need not switch the electric potential signal of this control signal in intermediate operation step with the operation of execution subsequent detection.
Seeing also Fig. 3, is fault detection method of the present invention is carried out another embodiment of fault detect by fault detection system of the present invention process flow diagram.Wherein, the operation steps identical or approximate with previous embodiment is to represent with identical or approximate component symbol, and omits detailed narration, so that the explanation of this case is clearer understandable.
The difference of present embodiment and previous embodiment is that fault detection method of the present invention is that the control signal (in step S20) that makes this control module 11 provide first is low-potential signal, and the back-signalling that is received in the high potential signal control signal that is sent according to this control module 11 and this receiver module 14, when analyzing this back-signalling and this control signal unequal together (promptly this moment, this back-signalling was a high potential signal), judge that open circuit fault (in step S231) appears in specific keys switch 33 circuits of this push-button unit 3; When this back-signalling of analysis is equal to (promptly this moment, this back-signalling also was low-potential signal) mutually with this control signal, the control signal that makes this control module 11 send switches to first interface 31 (among step S232s) of high potential signal to this push-button unit 3 by electronegative potential, and it is unequal during with (promptly this back-signalling is a low-potential signal at this moment) to analyze this back-signalling and this high potential signal control signal in subsequent step S25, judges that short trouble (in step S231) appears in specific keys switch 33 circuits of this push-button unit 3.Therefore, first embodiment, the fault detection method of present embodiment only is that the detection order of two kinds of fault types is exchanged, whether specific keys switch 33 circuits that promptly detect push-button unit 3 earlier exist open circuit fault, and whether specific keys switch 33 circuits of this push-button unit 3 of row detection exist short trouble again.
In addition, described with first embodiment, complete operation flow process as shown in Figure 3 (step S20 to S27), only at the push-button unit of choosing for the first time on this switching motherboard to be measured, only need consider whether to exist the open circuit fault problem for other push-button units on this switching motherboard of subsequent detection, the frame of broken lines that promptly only need carry out as shown in Figure 3 listens step S20 to S22, the S231, S261 and the S17 that show to get final product (with the operating process shown in the frame of broken lines shown in Figure 2).
In sum, fault detection system of the present invention and method thereof mainly are first and second interfaces that control module and receiver module is electrically connected to push-button unit respectively, and by control signal to this push-button unit of this control module transmission in order to the switch motion of control specific keys, to receive back-signalling by this receiver module, and then supply processing module according to control signal that this control module sent and the back-signalling that this receiver module received, analyze this back-signalling and whether this control signal is equal to, and in this control signal and unequal while of this back-signalling, judge that line fault appears in this push-button unit, and can further judge be open circuit fault also or short trouble.So, need not first interface of this push-button unit ground connection in advance can be detected this push-button unit and whether has open circuit fault by the present invention, also can detect whether there is short trouble, reach the effect of the line status that detects push-button unit; Simultaneously, can detect this push-button unit early by the present invention and whether have short trouble, can effectively avoid having short trouble because of failing to detect push-button unit in the prior art, cause the follow-up switching motherboard of this circuit hidden danger that will exist to be assembled in the notebook computer, expand to the fault of whole computer with fault with this push-button unit, and then the difficulty of increase fault detect, and reduce relatively and detect cost, so the preferable industrial utilization of the real tool of the present invention.
The foregoing description is illustrative principle of the present invention and effect thereof only, but not is used to limit the present invention.Any those skilled in the art all can be under spirit of the present invention and category, and the foregoing description is modified and changed.Therefore, the scope of the present invention should be listed as claims.
Claims (17)
1. fault detection system, overlap joint is to having the testing apparatus of the push-button unit of first interface and second interface in order to test, this testing apparatus comprises first interface that electrically connects this push-button unit when being used to be touched and the shake-up unit of second interface, and this fault detection system comprises at least:
Control module, be electrically connected to first interface of this push-button unit, in order to send one in order to control this first interface that controls signal to of this push-button unit action, and touch by this shake-up unit this push-button unit and this corresponding first and second interface are electrically conducted, export a back-signalling to make corresponding second interface of this push-button unit;
Receiver module is electrically connected to second interface of this push-button unit, after being used to this control module and sending aforesaid control signal, receives this back-signalling that this push-button unit is exported by this second interface; And
Processing module, in order to according to control signal that this control module sent and the back-signalling that this receiver module received, whether with this control signal identical, and when this control signal and this back-signalling are inequality, judge that line fault appears in this push-button unit if analyzing this back-signalling.
2. fault detection system according to claim 1, wherein, respectively first interface of this push-button unit is serially connected to form common terminal.
3. fault detection system according to claim 2, wherein, this line fault is one of them of line short fault and open circuit fault, and this line short fault shows as this common terminal ground connection.
4. fault detection system according to claim 3, wherein, this control signal and this back-signalling are one of them of high potential signal and low-potential signal.
5. fault detection system according to claim 4, wherein, this processing module is high potential signal and this back-signalling when being low-potential signal analyzing this control signal also, judges that promptly this push-button unit circuit is a short trouble; And be low-potential signal and this back-signalling when being high potential signal in this control signal, judge that then this push-button unit circuit is an open circuit fault; And, when the electric potential signal of this back-signalling all is equal to the electric potential signal of this control signal, judge that then this push-button unit circuit is normal when control signal that this control module sent is during for noble potential or low-potential signal.
6. fault detection system according to claim 1 also comprises in order to electrically connect first of this control module and this first interface electrically connecting the unit, and electrically connects the unit in order to electrically connect second of this second interface and this receiver module.
7. fault detection system according to claim 6, wherein, this first electric connection unit and this second electric connection unit are cables.
8. fault detection system according to claim 1 also comprises a display, interconnects with this processing module, in order to show this judged result.
9. fault detection method, overlap joint is to having the testing apparatus of the push-button unit of first interface and second interface in order to test, this testing apparatus comprises first interface that electrically connects this push-button unit when being used to be touched and the shake-up unit of second interface, and this fault detection method may further comprise the steps at least:
(1) make a control module be electrically connected to first interface of this push-button unit, in order to send one in order to control this first interface that controls signal to of this push-button unit action, and touch by this shake-up unit this push-button unit and this corresponding first and second interface are electrically conducted, export a back-signalling to make corresponding second interface of this push-button unit;
(2) make a receiver module be electrically connected to second interface of this push-button unit, after being used to this control module and sending aforesaid control signal, receive this back-signalling that this push-button unit is exported by this second interface; And
(3) make a processing module according to control signal that this control module sent and the back-signalling that this receiver module received, whether analyze this back-signalling identical with this control signal, and when this control signal and this back-signalling are inequality, judge that line fault appears in this push-button unit.
10. fault detection method according to claim 9, wherein, respectively first interface of this push-button unit is serially connected to form common terminal.
11. fault detection method according to claim 10, wherein, this line fault is one of them for line short fault and open circuit fault, and this line short fault shows as this common terminal ground connection.
12. fault detection method according to claim 11, wherein, this control signal and this back-signalling are one of them of high potential signal and low-potential signal.
13. fault detection method according to claim 12, wherein, this determining step (3) also comprises:
(4) when this control signal is high potential signal, analyze the electric potential signal whether this back-signalling is equal to this control signal, if not, then proceed to step (5), if then proceed to step (6);
(5) judge that short trouble appears in this push-button unit circuit, show corresponding judged result with output;
(6) be back to step (1), and make control module send the low-potential signal control signal, then execution in step (2);
(7) analyze the electric potential signal whether this back-signalling is equal to this control signal, if, then proceed to step (8), if not, then proceed to step (9);
(8) judge this push-button unit circuit for normal, to export corresponding judged result; And
(9) judge that open circuit fault appears in this push-button unit circuit, to export corresponding judged result.
14. fault detection method according to claim 12, wherein, this determining step (3) also comprises:
(10) when this control signal is low-potential signal, analyze the electric potential signal whether this back-signalling is equal to this control signal, if not, then proceed to step (11), if then proceed to step (12);
(11) judge that open circuit fault appears in this push-button unit circuit, show corresponding judged result with output;
(12) be back to step (1), and make control module send the high potential signal control signal, then execution in step (2);
(13) analyze the electric potential signal whether this back-signalling is equal to this control signal, if, then proceed to step (14), if not, then proceed to step (15);
(14) judge this push-button unit circuit for normal, to export corresponding judged result; And
(15) judge that short trouble appears in this push-button unit circuit, to export corresponding judged result.
15. fault detection method according to claim 9, wherein, electrical connection between this control module and this first interface is to electrically connect the unit by first to reach, and the electrical connection between this second interface and this receiver module is to electrically connect the unit by second to reach.
16. fault detection method according to claim 15, wherein, this first electric connection unit and this second electric connection unit are cables.
17. according to claim 13 or 14 described fault detection methods, wherein, this judged result is by being shown with the interconnective display of this processing module.
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