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Counting device and counting method

A technology of counting device and counting method, which is applied in counting chain pulse counters, pulse counters, electrical components, etc., and can solve problems such as the reduction of counting correction accuracy

Inactive Publication Date: 2012-10-17
YAMATAKE HONEYWELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, with the counting device disclosed in Patent Document 3, there is a problem that the accuracy of counting correction is lowered.

Method used

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  • Counting device and counting method
  • Counting device and counting method
  • Counting device and counting method

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Embodiment Construction

[0049] 1st embodiment

[0050] Hereinafter, embodiments of the present invention will be described with reference to the drawings. figure 1 is a block diagram showing the configuration of the counting device according to the embodiment of the present invention, figure 2 It is a flowchart showing the operation of the counting device. The counting device 1 includes a binarization unit 11 , a logical multiplication unit (AND) 12 , a counter 13 , a count result correction unit 14 , and a storage unit 15 . The counter 13 constitutes a signal counting unit.

[0051] image 3 It is a block diagram showing an example of the configuration of the count result correction unit 14 . The count result correction unit 14 includes an operation cycle measurement unit 140 , a frequency distribution generation unit 141 , a representative value calculation unit 142 , and a correction value calculation unit 143 .

[0052] Hereinafter, in this embodiment, the counting device 1 is applied to ...

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Abstract

The invention provides a counting device which can correct the counting result accurately even though the input signals are unsymmetrical at the aspect of time. A counter counts the run lengths of a binarized signal. A counting result correcting portion generates frequency distributions for run lengths for first run lengths, which are from a rising edge to a falling edge of the signal, and second run lengths, which are for a falling edge to a rising edge of the signal, calculates a total number of first run lengths of lengths that are no less than 0 times and less than 1 times a representative value for the first run lengths, calculates a total number of second run lengths of lengths that are no less than 0 times and less than 1 times a representative value for the second run lengths, calculates a total number of first run lengths which is no less than (TH+(n-0.5)*(TH+TL)) and is not more than (TH+(n+0.5)* (TH+TL)), calculates a total number of second run lengths which is no less than (TL+(n-0.5)*(TH+TL)) and is not more than (TL+(n+0.5)*(TH+TL)), and corrects the counting results.

Description

technical field [0001] The invention relates to a counting device and a counting method for counting the number of signals. Background technique [0002] Conventionally, a wavelength-modulated laser measuring instrument using the self-mixing effect of a semiconductor laser has been proposed (see Patent Document 1). The composition of the laser measuring instrument is as follows Figure 9 shown. Figure 9 The laser measuring device includes: a semiconductor laser 201, which emits laser light to an object 210; a photodiode 202, which converts the light output of the semiconductor laser 201 into an electrical signal; a lens 203, which condenses light from the semiconductor laser 201 and irradiates it to object 210, and the light returned from the object 210 is condensed to make it incident on the semiconductor laser 201; the laser driver 204 makes the first oscillation period in which the oscillation wavelength of the semiconductor laser 201 is continuously increased and the fi...

Claims

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Application Information

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IPC IPC(8): H03K23/00
CPCH03K23/00H03K21/023
Inventor 上野达也
Owner YAMATAKE HONEYWELL CO LTD
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