CN202275096U - Time measuring module protection device - Google Patents
Time measuring module protection device Download PDFInfo
- Publication number
- CN202275096U CN202275096U CN2011203748976U CN201120374897U CN202275096U CN 202275096 U CN202275096 U CN 202275096U CN 2011203748976 U CN2011203748976 U CN 2011203748976U CN 201120374897 U CN201120374897 U CN 201120374897U CN 202275096 U CN202275096 U CN 202275096U
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- China
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- time measurement
- gating
- measured signal
- holding circuit
- impact damper
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- 238000005259 measurement Methods 0.000 claims description 41
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007781 pre-processing Methods 0.000 abstract 2
- 238000012360 testing method Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The utility model relates to a time measuring module protection device, which is used for protecting a time measuring module and comprises a buffer and a gating protection circuit, wherein the buffer is used for receiving signals to be tested and carrying out pre-processing on the signals to be tested so that the waveform of the signals to be tested cannot be changed, and the gating protection circuit is connected with the buffer and the time measuring module and is used for carrying out amplitude limitation on the signals to be tested. The buffer is adopted for carrying out pre-processing on the signals to be tested so that the waveform of the signals to be tested is not changed, and the gating protection circuit carries out the amplitude limitation, so the peak burr interference occurrence is prevented, the time measuring module is protected, the time measuring module is prevented from being damaged, and the normal proceeding of the production is ensured.
Description
[technical field]
The utility model relates to a kind of protective device, relates in particular to a kind of time measurement Block Protection Unit.
[background technology]
Time measurement module (TMU-Time Measure Unit) is the basic device of integrated circuit automatic testing equipment (ATE-Auto Test Equipment).
In actual use, time measurement module is set at high resistant or low-resistance as required.When the time measurement module is in high resistant input setting, if the measured signal waveform changes, the spike burr occurs and disturb, will cause the time measurement module to be damaged, make production normally to carry out.
[summary of the invention]
Based on this, be necessary to provide a kind of time test Block Protection Unit that the time measurement module is protected.
A kind of time measurement Block Protection Unit is used for the time measurement module is protected, but comprises impact damper gating holding circuit, and said impact damper is used to receive measured signal, and pre-service is carried out in measured signal, and said measured signal waveform is not changed; But said gating holding circuit is connected with said time measurement module with said impact damper, is used for amplitude limit is carried out in said measured signal.
Preferably, said impact damper is the high speed and high pressure impact damper.
Preferably, but said gating holding circuit comprises discharge circuit, and when said discharge circuit exceeded setting value at measured signal voltage, slicing carried out amplitude limit automatically.
Preferably, but said gating holding circuit turn-off during in the input impedance of time measurement module for predetermined value.
Preferably, but said gating holding circuit when the input impedance of time measurement module is 50 Europe, turn-off.
Above-mentioned time measurement Block Protection Unit; Adopt impact damper that pre-service is carried out in measured signal, make the measured signal waveform not change, but the gating holding circuit is carried out amplitude limit to measured signal; Thereby preventing the spike burr disturbs; The time measurement module is protected, prevented that the time measurement module is damaged, guarantee to produce and normally carry out.
[description of drawings]
Fig. 1 is the structural representation of time measurement Block Protection Unit among the embodiment.
[embodiment]
Below in conjunction with accompanying drawing, specific embodiments of the invention is described in detail.
Fig. 1 is the structural representation of time measurement Block Protection Unit among the embodiment.But this time measurement Block Protection Unit 100 comprises impact damper 110 and gating holding circuit 120.
But gating holding circuit 120 is connected between impact damper 110 and the time measurement module 200, is used for amplitude limit is carried out in measured signal, and time measurement module 200 is protected.
Among this embodiment, but gating holding circuit 120 has discharge circuit, and when measured signal voltage exceeded setting value, slicing carried out amplitude limit automatically.
Simultaneously; Because but the adding of gating holding circuit 120 is influential to time measurement module 200 impedance operators; When the input impedance of time measurement module 200 was particular value, for example 50 Europe were tiny signal as if measured signal; But gating holding circuit 120 can influence tiny signal, makes measured signal to measure.For avoiding this situation, among this embodiment, when the input impedance of time measurement module 200 is predetermined value, but gating holding circuit 120 turn-off, thereby guarantee that tiny signal is unaffected, can be measured.Preferred embodiment, when the input impedance of time measurement module 200 is 50 Europe, but gating holding circuit 120 is turn-offed.
This time measurement Block Protection Unit 100, pre-service is carried out in 110 pairs of measured signals of impact damper, guarantees that the measured signal waveform does not change, thereby prevents the spike burr, and time measurement module 200 is protected; But amplitude limit is carried out in 120 pairs of measured signals of gating holding circuit, and time measurement module 200 is further protected, but gating holding circuit 120 can also be turn-offed the not measurement of 200 pairs of measured signals of influence time measurement module under specific circumstances simultaneously.
Above-mentioned time measurement Block Protection Unit; Adopt impact damper that pre-service is carried out in measured signal, make the measured signal waveform not change, but the gating holding circuit is carried out amplitude limit to measured signal; Thereby preventing the spike burr disturbs; The time measurement module is protected, prevented that the time measurement module is damaged, guarantee to produce and normally carry out.
The above embodiment has only expressed several kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with accompanying claims.
Claims (5)
1. a time measurement Block Protection Unit is used for the time measurement module is protected, and it is characterized in that; But comprise impact damper gating holding circuit; Said impact damper is used to receive measured signal, and pre-service is carried out in measured signal, and said measured signal waveform is not changed; But said gating holding circuit is connected with said time measurement module with said impact damper, is used for amplitude limit is carried out in said measured signal.
2. time measurement Block Protection Unit according to claim 1 is characterized in that, said impact damper is the high speed and high pressure impact damper.
3. time measurement Block Protection Unit according to claim 1 is characterized in that, but said gating holding circuit comprises discharge circuit, and when said discharge circuit exceeded setting value at measured signal voltage, slicing carried out amplitude limit automatically.
4. time measurement Block Protection Unit according to claim 3 is characterized in that, but said gating holding circuit is turn-offed during for predetermined value in the input impedance of time measurement module.
5. time measurement Block Protection Unit according to claim 4 is characterized in that, but said gating holding circuit is turn-offed when the input impedance of time measurement module is 50 Europe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203748976U CN202275096U (en) | 2011-09-30 | 2011-09-30 | Time measuring module protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203748976U CN202275096U (en) | 2011-09-30 | 2011-09-30 | Time measuring module protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202275096U true CN202275096U (en) | 2012-06-13 |
Family
ID=46195444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203748976U Expired - Fee Related CN202275096U (en) | 2011-09-30 | 2011-09-30 | Time measuring module protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202275096U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105513A (en) * | 2013-01-17 | 2013-05-15 | 广东电网公司电力科学研究院 | Protection device for removing damages caused by random large-signal of detected device on standard device |
| CN113296815A (en) * | 2021-06-10 | 2021-08-24 | 深圳市嘉润原新显科技有限公司 | Portable burning device |
| GB2579046B (en) * | 2018-11-15 | 2021-10-27 | Edwards Ltd | Seal for a vacuum pump |
-
2011
- 2011-09-30 CN CN2011203748976U patent/CN202275096U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105513A (en) * | 2013-01-17 | 2013-05-15 | 广东电网公司电力科学研究院 | Protection device for removing damages caused by random large-signal of detected device on standard device |
| CN103105513B (en) * | 2013-01-17 | 2015-09-16 | 广东电网公司电力科学研究院 | Eliminate the protective device that tested equipment output stochastic larger signal damages standard device |
| GB2579046B (en) * | 2018-11-15 | 2021-10-27 | Edwards Ltd | Seal for a vacuum pump |
| CN113296815A (en) * | 2021-06-10 | 2021-08-24 | 深圳市嘉润原新显科技有限公司 | Portable burning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20140930 |
|
| EXPY | Termination of patent right or utility model |