CN102269643A - Measuring system and measuring method - Google Patents
Measuring system and measuring method Download PDFInfo
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- CN102269643A CN102269643A CN2010101905084A CN201010190508A CN102269643A CN 102269643 A CN102269643 A CN 102269643A CN 2010101905084 A CN2010101905084 A CN 2010101905084A CN 201010190508 A CN201010190508 A CN 201010190508A CN 102269643 A CN102269643 A CN 102269643A
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Abstract
The invention discloses a measuring system which is used for testing a falling protection mechanism. The falling protection mechanism is applicable to a computer system, wherein the computer system comprises a gravity sensor which is used for sensing the weightless state and outputting an instruction signal so as to instruct a hard disc to reset a reading and wiring head, and the measuring system can display changes in a sensing signal corresponding to the displacement situation of the computer system during falling, the instruction signal and a voice coil motor signal of the hard disc relative to the time so as to provide basis for judging the effectiveness of the falling protection mechanism.
Description
Technical field
The present invention is meant a kind of measuring system and measuring method, and a kind of measuring system and measuring method that provides judgement one to fall to falling the validity foundation of protection mechanism is provided especially.
Background technology
Electronic product all can detect through complicated quality or fiduciary level before dispatching from the factory, and avoids defective products to flow into the market, to guarantee product competitiveness.For instance; unite at portable computer; relevant manufacturer has developed a kind of protection mechanism that falls to falling; it is in the portable computer system gravity sensor (G-sensor) to be set; be used to refer to the generation that falls to falling,, and make the disk read-write head playback in real time with the operation of informing that hard disk stops to read and write; prevent that read/write head scratch disc from causing bad rail, reach the function of protection hard disc data.
Reach the above-mentioned protection mechanism that falls to falling; except hard disk need be designed to " can read/write head be playbacked according to the signal of gravity sensor "; the more important thing is from gravity sensor to sense weightlessness and send signal to hard disk and finish the time of read/write head playback and whether meet preset standard, promptly less than special time.Yet known technology does not fall to falling protection mechanism at this as yet, develops suitable measuring method, whether can meet standard correlation time with checking exploitation machine.
Summary of the invention
Therefore, fundamental purpose of the present invention promptly is to provide a kind of measuring system and measuring method.
The present invention discloses a kind of measuring system, be used for testing one and fall to falling protection mechanism, this falls to falling protection mechanism and is applicable to a computer system, this computer system comprises a gravity sensor, be used for sensing state of weightlessness and export an indicator signal, to indicate a hard disk one read/write head playbacked, this measuring system includes a lifting table, be used for putting this computer system, and can make this computer system fall to a second place in the freely falling body mode by a primary importance; One displacement sensing device is used for the displacement that this computer system of sensing falls from this primary importance of this lifting table, to produce a sensing signal; An and Waveform display apparatus.This Waveform display apparatus includes one first pin, is coupled to this displacement sensing device, is used for receiving this sensing signal; One second pin is coupled to this gravity sensor, is used for receiving this indicator signal; One the 3rd pin is coupled to this hard disk, is used for receiving a voice coil motor signal of this hard disk; An and display; be coupled to this first pin, this second pin and the 3rd pin; be used for showing that this sensing signal, this indicator signal and this voice coil motor signal with respect to the variation situation of time, judge that to provide this falls to falling the foundation of the validity of protection mechanism.
The present invention also discloses a kind of measuring method, be used for testing one and fall to falling protection mechanism, this falls to falling protection mechanism and is applicable to a computer system, this computer system comprises a gravity sensor, be used for sensing state of weightlessness and export an indicator signal, to indicate a hard disk that one read/write head is playbacked, this measuring method includes makes this computer system fall to a second place by a primary importance in the freely falling body mode; The displacement that this computer system of sensing falls from this primary importance of this lifting table is to produce a sensing signal; And show a voice coil motor signal of this sensing signal, this indicator signal and this hard disk with respect to the variation situation of time, judge that to provide this falls to falling the foundation of the validity of protection mechanism.
Description of drawings
Figure 1A is the synoptic diagram of the embodiment of the invention one measuring system.
Figure 1B is the synoptic diagram that the measuring system of Figure 1A comes into operation.
Fig. 1 C is the measurement result synoptic diagram of the measuring system of Figure 1A.
Fig. 1 D is the synoptic diagram that the measuring system of Figure 1A increases robotization or scientific judgment mechanism.
Fig. 2 and Fig. 3 are the synoptic diagram of alternate embodiment of the measuring system of Figure 1A.
Fig. 4 is the synoptic diagram that the embodiment of the invention one is measured flow process.
[main element label declaration]
| 10 | |
|
| 100 | Computer system | |
| G_snr | Gravity sensor | |
| HD | |
|
| 102 | Lifting table | |
| 104 | The |
|
| 106 | Waveform display apparatus | |
| P1 | Primary importance | |
| P2 | The second place | |
| H | Highly | |
| SNS | Sensing signal | |
| IND | Indicator signal | |
| VCM | The voice |
|
| 108 | Display | |
| T0、T1、 | Time point | |
| 110 | |
|
| 112 | Judgment means | |
| 200 | |
|
| 304、306 | |
|
| 302 | Lifting table | |
| 40 | Measure flow process | |
| 400、402、404、406、408 | Step |
Embodiment
Please refer to Figure 1A, Figure 1A is the synoptic diagram of the embodiment of the invention one measuring system 10.Measuring system 10 is used for testing a computer system 100, so that the foundation of the validity of judging to fall to falling protection mechanism to be provided.Computer system 100 comprises a gravity sensor G_snr, is used for sensing state of weightlessness and export an indicator signal IND, to indicate a hard disk HD one read/write head is playbacked.Measuring system 10 includes a lifting table 102, a displacement sensing device 104 and a Waveform display apparatus 106.Lifting table 102 is used for putting or carrying computer system 100, and it can controlledly make computer system 100 fall to a second place P2 by a primary importance P1 in the freely falling body mode.Displacement sensing device 104 is an OPTICAL SENSORS, is arranged at the primary importance P1 of lifting table 102, is used for the displacement situation that sensing computer system 100 falls from primary importance P1, to produce a sensing signal SNS.Waveform display apparatus 106 is respectively coupled to displacement sensing device 104, gravity sensor G_snr and hard disk HD by pin PIN1, PIN2, PIN3; be used for receiving sensing signal SNS, indicator signal IND and a voice coil motor signal VCM; and then show that by a display 108 sensing signal SNS, indicator signal IND and voice coil motor signal VCM are with respect to the waveform of time, so that the foundation of the validity of judging to fall to falling protection mechanism to be provided.Wherein, voice coil motor signal VCM is the signal of control read/write head actuating arm among the hard disk HD, and when it made zero, expression read/write head actuating arm decommissioned.
In simple terms, but the time point T0 that measuring system 10 measurement computer system 100 fall to falling, and gravity sensor G_snr senses weightlessness and sends the time point T1 of indicator signal IND, and hard disk HD finishes a time point T2 of read/write head playback.When beginning to measure, at first shown in Figure 1B, need computer system 100 is promoted to primary importance P1, then displacement sensing device 104 can continue the light that sensing computer system 100 is reflected.Then, when lifting table 102 controlled and when making computer system 100 begin to fall by primary importance P1, because the light that computer system 100 is reflected changes, the sensing signal SNS that displacement sensing device 104 is exported also has corresponding variation, and the time point of this variation is the time that computer system 100 is begun to fall by primary importance P1, i.e. T0.After computer system 100 is fallen by primary importance P1, the gravity value that computer system 100 is born can descend rapidly, when gravity value drops to a threshold value, gravity sensor G_snr can be judged as state of weightlessness, and output indicator signal IND is to hard disk HD, with indication read/write head is playbacked, and this time point is T1.When hard disk HD receives the indicator signal IND that gravity sensor G_snr exported, hard disk HD can drive the read/write head actuating arm read/write head is playbacked, so voice coil motor signal VCM begins to change, when treating that read/write head is finished playback, voice coil motor signal VCM also can make zero, and this time point is T2.
Further, sensing signal SNS, indicator signal IND and voice coil motor signal VCM are shown in display 108 simultaneously with respect to the waveform of time, shown in Fig. 1 C, can judge to fall to falling whether correctly running of protection mechanism.That is to say; can correctly operate in order to ensure falling to falling protection mechanism; the maximum allowed time of manufacturer's meeting definition of T 0 to T2; if test result meets this requirement; then expression is if highly h (primary importance P1 is to the distance of second place P2) is when falling by one for computer system 100, and before bumping, hard disk HD can finish the read/write head playback; prevent that read/write head scratch disc from causing bad rail, reach the function of protection hard disc data.Be noted that primary importance P1 decides according to the maximum allowed time of T0 to T2 to the height h of second place P2, and judgment mode is to utilize the acceleration of gravity formula, i.e. h=(1/2) * g*t
2, wherein g represents acceleration of gravity, the t express time.For instance, if the maximum allowed time of T0 to T2 is 140 milliseconds, then height h should be set at about 9.6 centimeters; If the maximum allowed time of T0 to T2 is 160 milliseconds, then height h should be set at about 12.5 centimeters).
Be noted that Figure 1A to Fig. 1 C is used for illustrating notion of the present invention, it has omitted the part of not having connection with the present invention, and it should be a technology well-known to those skilled in the art.For example, finish aforementioned measurement running, measuring system 10 must have equipment such as power supply supply, starting switch, Temperature and Humidity Control, and computer system 100 must operate and meet the designing requirement that falls to falling protection mechanism ... or the like.Moreover, by Fig. 1 C as can be known, in the measured data of measuring system 10, T1 is that expression gravity sensor G_snr judges weightless and time output indicator signal IND, the sensitivity that can judge gravity sensor G_snr by this whether correctly set or the read head playback running of hard disk HD whether normal.For instance, when the test result of measuring system 10 shows the overlong time of T0 to T1 and causes computer system 100 can't be by test the time, the sensitivity of expression gravity sensor G_snr is low excessively, so that can't export indicator signal IND in good time; And show the overlong time of T1 to T2 and cause computer system 100 can't be by test the time that the running of the read head playback of expression hard disk HD is unusual, so that can't read head be playbacked in good time when the test result of measuring system 10.
Therefore, by measuring system 10, test operator can obtain enough information, to judge the part that needs improvement design.In addition, Waveform display apparatus 106 demonstration sensing signal SNS, indicator signal IND and voice coil motor signal VCM are with respect to the waveform of time, and its foot is judged the validity that falls to falling protection mechanism for test operator.If will judge more accurately, can utilize robotization or scientific judgment mechanism.For instance, in Fig. 1 D, Waveform display apparatus 106 is numerical data with sensing signal SNS, indicator signal IND and voice coil motor signal VCM with respect to the waveform transformation of time further, and exports a judgment means 112 to by an output unit 110.Judgment means 112 can be a computer system, is used for the numerical data that interpretation output unit 110 exported, and judges the time of T0 to T1, the time of T1 to T2 by this ... etc., and then judge and fall to falling whether correctly running of protection mechanism.
In addition, the waveform shown in Fig. 1 C only is an example, and in fact, when computer system 100 fell, the variation pattern of sensing signal SNS was not limited to reduce to low level by high level, can also be to be risen to high level, produced a pulse by low level ... etc.Similarly, indicator signal IND or voice coil motor signal VCM also may and have different variation patterns because of the difference of design.Therefore, when Measuring Time point T0, T1, T2, test operator should suitably be adjusted the definition of each time point according to the difference of system design, with correct data of measuring requiredly or data.
On the other hand, what need pay special attention to is, measuring system 10 only is used for illustrating notion of the present invention, and wherein the lifting table shown in Figure 1A 102, displacement sensing device 104 and Waveform display apparatus 106 only are one of feasible implementations, but be not limited thereto, multiple different variation also can be arranged.For instance, in Figure 1A, displacement sensing device 104 is to realize with OPTICAL SENSORS, therefore, for increasing its sensing usefulness, can paste a reflecting piece corresponding to the position of displacement sensing device 104 on computer system 100.In addition, except OPTICAL SENSORS, but the element that can also other sensed displacement changes is realized.For instance, in Fig. 2, displacement sensing device 104 is replaced into a pressure sensor 200, it is to be located between a platform of computer system 100 and lifting table 102, when computer system 100 is fallen by primary importance P1, the force value of 200 sensings of pressure sensor can reduce moment, thereby can judge the time point T0 that falls to falling generation.Moreover, because lifting table 102 is instruction or the trigger pips that are controlled by test operator, and computer system 100 is fallen by primary importance P1, therefore, displacement sensing device 104 can also be realized by a signal sensing device, be used for acceptance test operator's instruction or trigger pip, can judge the time point T0 that falls to falling generation in view of the above.
Shown in Figure 1A, in measuring system 10, lifting table 102 is made up of a platform, two-orbit and an oil pressure lifting device, and in fact, lifting table 102 is not limited to particular types, can be fallen by certain height as long as guarantee computer system 100.For example, in Fig. 3, a lifting table 302 is platform and the oil pressure lifting devices that replaced lifting table 102 among Figure 1A by anchor clamps 304,306, and when starting when falling to falling, anchor clamps 304,306 can discharge computer system 100 simultaneously.In this case, displacement sensing device 104 equally can OPTICAL SENSORS, pressure sensor or signal sensing device are realized (when realizing with pressure sensor, pressure sensor can be arranged between computer system 100 and anchor clamps 304 or 306), associated change should be the technology that those skilled in the art are familiar with.
Therefore; by measuring sensing signal SNS, indicator signal IND and voice coil motor signal VCM waveform with respect to the time; measuring system 10 can provide foot to fall to falling the whether correctly information of running of protection mechanism for judging; make the deviser can adjust the design of computer system 100 according to this, as the sensitivity of gravity sensor G_snr, the operational effectiveness of hard disk HD etc.In addition, the running of measuring system 10 can further reduce one and measure flow process 40, as shown in Figure 4.Measure flow process 40 and comprise following steps:
Step 400: beginning.
Step 402: make computer system 100 fall to second place P2 in the freely falling body mode by primary importance P1.
Step 404: the displacement that sensing computer system 100 falls from the primary importance P1 of lifting table 102, to produce sensing signal SNS.
Step 406: demonstration sensing signal SNS, indicator signal IND and voice coil motor signal VCM are with respect to the variation situation of time, so that the foundation of the validity of judging to fall to falling protection mechanism to be provided.
Step 408: finish.
Measuring the detailed description of flow process 40 can not give unnecessary details in this with reference to aforementioned.
As previously mentioned, known technology is as yet at falling to falling protection mechanism, develop suitable measuring method, thereby can't verify whether the exploitation machine can meet standard correlation time.In comparison; the present invention is by measuring sensing signal SNS, indicator signal IND and the voice coil motor signal VCM waveform with respect to the time; provide and judge to fall to falling the whether correctly information of running of protection mechanism, make the deviser can adjust the design of computer system according to this, guarantee product competitiveness.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (13)
1. a measuring system is used for testing one and falls to falling protection mechanism, and this falls to falling protection mechanism and is applicable to a computer system; this computer system comprises a gravity sensor; be used for sensing state of weightlessness and export an indicator signal, to indicate a hard disk one read/write head playbacked, this measuring system includes:
One lifting table is used for putting this computer system, and can make this computer system fall to a second place by a primary importance in the freely falling body mode;
One displacement sensing device is used for the displacement that this computer system of sensing falls from this primary importance of this lifting table, to produce a sensing signal; And
One Waveform display apparatus includes:
One first pin is coupled to this displacement sensing device, is used for receiving this sensing signal;
One second pin is coupled to this gravity sensor, is used for receiving this indicator signal;
One the 3rd pin is coupled to this hard disk, is used for receiving a voice coil motor signal of this hard disk; And
One display is coupled to this first pin, this second pin and the 3rd pin, is used for showing that this sensing signal, this indicator signal and this voice coil motor signal with respect to the variation situation of time, judge that to provide this falls to falling the foundation of the validity of protection mechanism.
2. measuring system according to claim 1, wherein this displacement sensing device is an OPTICAL SENSORS, is used for the light that this computer system of sensing reflected to change, to produce this sensing signal.
3. measuring system according to claim 2, wherein this computer system is also posted a reflecting piece, corresponding to a sense position of this OPTICAL SENSORS, in order to strengthen the sensing usefulness of this OPTICAL SENSORS.
4. measuring system according to claim 1, wherein this displacement sensing device is a pressure sensor, is arranged between this computer system and this lifting table, is used for the pressure that this computer system of sensing imposes on this lifting table to change, to produce this sensing signal.
5. measuring system according to claim 1, wherein this lifting table makes this computer system fall to this second place by this primary importance in the freely falling body mode according to a trigger pip, this displacement sensing device is a signal sensing device, be used for the variation of this trigger pip of sensing, to produce this sensing signal.
6. measuring system according to claim 1, wherein this Waveform display apparatus also comprises an output unit, is used for exporting this sensing signal, this indicator signal and this voice coil motor signal numerical data with respect to the variation situation of time; And this measuring system also comprises a judgment means, is coupled to this Waveform display apparatus, is used for according to this numerical data, judges that this falls to falling the validity of protection mechanism.
7. measuring system according to claim 6; wherein this judgment means is according to this numerical data; judge that whether the duration between one second time point that very first time point to this voice coil motor signal that this sensing signal changes changes fall to duration of this second place less than this computer system from this primary importance of this lifting table, fall to falling the validity of protection mechanism to judge this.
8. a measuring method is used for testing one and falls to falling protection mechanism, and this falls to falling protection mechanism and is applicable to a computer system; this computer system comprises a gravity sensor; be used for sensing state of weightlessness and export an indicator signal, to indicate a hard disk one read/write head playbacked, this measuring method includes:
Make this computer system fall to a second place in the freely falling body mode by a primary importance;
The displacement that this computer system of sensing falls from this primary importance of this lifting table is to produce a sensing signal; And
Show a voice coil motor signal of this sensing signal, this indicator signal and this hard disk with respect to the variation situation of time, judge that to provide this falls to falling the foundation of the validity of protection mechanism.
9. measuring method according to claim 8, wherein the step of the displacement that falls from this primary importance of this lifting table of this computer system of sensing is that the light that this computer system of sensing is reflected changes, to produce this sensing signal.
10. measuring method according to claim 8, the step of the displacement that falls from this primary importance of this lifting table of this computer system of sensing wherein is that the pressure that this computer system of sensing imposes on this lifting table changes, to produce this sensing signal.
11. measuring method according to claim 8, the step of the displacement that falls from this primary importance of this lifting table of this computer system of sensing wherein, be that sensing makes this computer system fall to the variation of a trigger pip of this second place by this primary importance in the freely falling body mode, to produce this sensing signal.
12. measuring method according to claim 1, it also comprises:
This sensing signal, this indicator signal and this voice coil motor signal are converted to a numerical data with respect to the variation situation of time; And
According to this numerical data, judge that this falls to falling the validity of protection mechanism.
13. measuring method according to claim 12; wherein according to this numerical data; judge that this falls to falling the step of the validity of protection mechanism; be according to this numerical data; judge that whether the duration between one second time point that very first time point to this voice coil motor signal that this sensing signal changes changes fall to duration of this second place less than this computer system from this primary importance of this lifting table, fall to falling the validity of protection mechanism to judge this.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238361A (en) * | 2017-06-08 | 2017-10-10 | 重庆腾毅兴精密电子有限公司 | A kind of voice coil motor displacement accuracy and reliability checking method |
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| TW502109B (en) * | 2001-12-14 | 2002-09-11 | Shia-Tzung Chen | Method of inspecting the falling test of electronic products |
| CN101111770A (en) * | 2005-01-31 | 2008-01-23 | 日立金属株式会社 | Fall detecting method and fall detecting device |
| CN101523223A (en) * | 2006-10-11 | 2009-09-02 | 飞思卡尔半导体公司 | Sensor having free fall self-test capability and method therefor |
| US20100073812A1 (en) * | 2007-06-05 | 2010-03-25 | Murata Manufacturing Co., Ltd. | Fall detection device, magnetic disk device, and portable electronic apparatus |
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2010
- 2010-06-03 CN CN2010101905084A patent/CN102269643A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| TW502109B (en) * | 2001-12-14 | 2002-09-11 | Shia-Tzung Chen | Method of inspecting the falling test of electronic products |
| CN101111770A (en) * | 2005-01-31 | 2008-01-23 | 日立金属株式会社 | Fall detecting method and fall detecting device |
| CN101523223A (en) * | 2006-10-11 | 2009-09-02 | 飞思卡尔半导体公司 | Sensor having free fall self-test capability and method therefor |
| US20100073812A1 (en) * | 2007-06-05 | 2010-03-25 | Murata Manufacturing Co., Ltd. | Fall detection device, magnetic disk device, and portable electronic apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238361A (en) * | 2017-06-08 | 2017-10-10 | 重庆腾毅兴精密电子有限公司 | A kind of voice coil motor displacement accuracy and reliability checking method |
| CN107238361B (en) * | 2017-06-08 | 2019-09-06 | 蔡银花 | A kind of voice coil motor displacement accuracy and reliability checking method |
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Application publication date: 20111207 |