Pulse distance voltage converter and converting method thereof

A technology of voltage converter and pulse interval, which is applied in the direction of digital-to-analog converter, pulse processing, pulse technology, etc., and can solve problems such as susceptibility to interference, low efficiency of bit usage, low resolution, etc.

Inactive Publication Date: 2006-08-30
LEADTEK +2
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

That is to say, only about 26 of the 256 levels are used to distinguish the difference between two adjacent pulse intervals, so the bit usage efficiency is low, and the resolution of the voltage display cannot be improved.
In other words, it seems that the only way to increase the resolution is to use hi

Method used

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  • Pulse distance voltage converter and converting method thereof
  • Pulse distance voltage converter and converting method thereof
  • Pulse distance voltage converter and converting method thereof

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Embodiment Construction

[0023] The present invention will first be briefly described by taking the one-pulse-interval voltage converter 20 shown in FIG. 2( a ) as an example to show the technical features and advantages of the present invention. The pulse interval voltage converter 20 includes a counter 21 , a latch 22 , a digital-to-analog converter 23 , a delay unit 24 , a frequency regulator 25 , a current limiting protection unit 26 and a clock generator 27 . After the pulse 28 is input through a delay unit 24 , it will be finally converted into an analog voltage output signal by the digital-to-analog converter 23 . Compared with the known technology, the pulse interval voltage converter 20 has the delay unit 24 , the frequency regulator 25 and the current limiting protection unit 26 added. The delay unit 24 can be programmed with a preset delay time to delay the timing of the counter 21 returning to zero. If the preset delay is Y clocks, and the time after each clock 28 is delayed to generate t...

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Abstract

This invention discloses a pulse spacer voltage converter and its converting method. It comprises a time generator, a counter, a latch unit, a delay unit, a frequency adjuster and a current limiting protection unit. The invention increases the delay unit, frequency adjuster and current limiting protection unit with comparing the present technology. The delay unit can make programmable presetting for delay time to delay the time of the counter zero adjustment, and adjust the datum line of voltage output accordingly. The frequency adjuster can adjust clock frequency generated from the clock generator to adjust the resolution for output voltage. The current limiting protection unit can stop the accesses of external signal as the delay unit working to avoid interference of the noise.

Description

technical field [0001] The present invention relates to a pulse interval voltage converter (Pulse Interval to Voltage Converter, PIVC) and its conversion method, in particular to a programmable pulse interval voltage converter and its conversion method. Background technique [0002] The pulse interval voltage converter is a commonly used device in industry and biomedicine, which can express each pulse interval in the form of voltage. As shown in Fig. 1(a), T1 to T6 are the intervals of each pulse 11, and the converted voltage is proportional to the interval of each pulse 11, that is, the larger the interval, the greater the output voltage. In addition, according to different design forms, pulse-to-interval voltage converters can be simply divided into two types: analog and digital. [0003] Referring to Fig. 1(b), the principle of the digital pulse interval voltage converter is to use a counter (counter) 13 to start counting after receiving a pulse (pulse) 11, and reset to ...

Claims

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Application Information

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IPC IPC(8): H03K5/00H03M1/66
Inventor 郭博昭杨静修
Owner LEADTEK
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