A device for improving time measurement resolution
A technology of resolution and time measurement, which is applied to devices for measuring time intervals, measuring electrical unknown time intervals, and instruments. time resolution, overcome limitations, and improve the effect of time measurement resolution
Active Publication Date: 2015-11-25
BEIJING ZHENXING METROLOGY & TEST INST
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Problems solved by technology
[0003] Using the first method above is easily restricted by the operating frequency of the device, so there is limited room for improvement
Using the second method above, the conversion speed is slow, and there is a large error in the narrow pulse width time amplification, which is difficult to meet the fast and accurate measurement requirements
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[0027] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0028] Such as figure 1 As shown, it is a schematic structural diagram of a device for improving time measurement resolution provided by an embodiment of the present invention, and the device includes:
[0029] Synchronization unit 11 , first delay circuit 12 , second delay circuit 13 , at least two-stage sampling unit 14 and level conversion decoding unit 15 .
[0030] Specifically, the synchronization unit 11 includes: a first synchronizer 111 and a second synchronizer 112; speed.
[0031] Specifically, the first synchronizer 111 is used as a clock synchronizer, and its input terminal r...
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The invention relates to the technical field of time measurement, in particular to a device for improving time measurement resolution. The device comprises a synchronous unit, a first time delay circuit, a second time delay circuit, sampling units and a level conversion decoding unit. The synchronous unit comprises a first synchronizer and a second synchronizer, the input end of the first synchronizer receives clock signals and interpolation signals, the output end of the first synchronizer is connected with the input end of each stage of sampling unit, the input end of the second synchronizer is connected with the output end of the first time delay circuit, the input end of the first time delay circuit receives interpolation signals, the second time delay circuit comprises a time delay unit, the input end of the time delay unit is connected with the output end of the second synchronizer, and the output end of the time delay unit is respectively connected with the input ends of the sampling units. Each sampling unit comprises a same-phase output end and an inverted-phase output end, the same-phase output end is connected with the inverted-phase output end of an upper stage of sampling unit through a wire or a circuit, and the input end of the level conversion decoding unit is connected with the same-phase output ends of the sampling units.
Description
technical field [0001] The invention relates to the technical field of time measurement, in particular to a device for improving time measurement resolution. Background technique [0002] In general time measuring devices in the field of time measurement, there is a resolution of one clock period when measuring time with a time counter. There are mainly two methods to improve the resolution of the time period: 1. Increase the clock frequency of the time counter; 2. Use an interpolator for charging and discharging the capacitor. [0003] Using the first method mentioned above is easily restricted by the operating frequency of the device, so the room for improvement is limited. Using the second method above, the conversion speed is slow, and there is a large error in the time amplification of the narrow pulse width, so it is difficult to meet the fast and accurate measurement requirements. Therefore, there is an urgent need for a timing resolution device that can better solv...
Claims
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IPC IPC(8): G04F10/00G04F10/04
Inventor 游福初
Owner BEIJING ZHENXING METROLOGY & TEST INST