WO2018074692A1 - Système de correction de point zéro et procédé de correction de point zéro l'utilisant - Google Patents

Système de correction de point zéro et procédé de correction de point zéro l'utilisant Download PDF

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Publication number
WO2018074692A1
WO2018074692A1 PCT/KR2017/005861 KR2017005861W WO2018074692A1 WO 2018074692 A1 WO2018074692 A1 WO 2018074692A1 KR 2017005861 W KR2017005861 W KR 2017005861W WO 2018074692 A1 WO2018074692 A1 WO 2018074692A1
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WO
WIPO (PCT)
Prior art keywords
signal
zero
digital signal
switch unit
conversion
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Application number
PCT/KR2017/005861
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English (en)
Korean (ko)
Inventor
김경환
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주식회사 파이온이엔지
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Publication of WO2018074692A1 publication Critical patent/WO2018074692A1/fr

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/10—Calibration or testing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/10—Calibration or testing
    • H03M1/1009—Calibration
    • H03M1/1014—Calibration at one point of the transfer characteristic, i.e. by adjusting a single reference value, e.g. bias or gain error
    • H03M1/1019—Calibration at one point of the transfer characteristic, i.e. by adjusting a single reference value, e.g. bias or gain error by storing a corrected or correction value in a digital look-up table
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/10—Calibration or testing
    • H03M1/1009—Calibration
    • H03M1/1014—Calibration at one point of the transfer characteristic, i.e. by adjusting a single reference value, e.g. bias or gain error
    • H03M1/1023—Offset correction

Definitions

  • the present invention relates to a zero correction system and a zero correction method using the same, and more particularly, based on a first digital signal which is an AD conversion signal of a zero signal, a second digital signal that is an AD conversion signal of an analog signal is corrected to AD.
  • the present invention relates to a zero correction system capable of effectively correcting a zero deviation of a signal generated during conversion, and a zero correction method using the same.
  • AD conversion is an analog quantity to digital quantity, which is used to efficiently convert disordered analog signals to electronic circuits efficiently.
  • AD conversion refers to an electronic process that is converted into a signal, that is, digital, at various levels without changing the essential content of the analog amount to be converted.
  • the reason for converting an analog quantity to a digital quantity is that digital signals can be more efficiently delivered by making it easier to separate electronic circuits that are clearer, regular, and disordered from noise than analog signals.
  • An analog to digital converter is a device that receives an analog signal of a continuous change amount and converts it into a discretely encoded signal. It is installed in production facilities and used to control the output of various mechanical devices, electronic devices, production facilities, and the like.
  • the zero point (the reference point at which the digital signal is generated) may change due to errors or characteristics of individual elements constituting the internal circuit of the device, aging, and ambient temperature deviation. According to the change of the zero point, An error occurs in the output digital signal.
  • An object of the present invention is to solve the above-described problems, and is generated during AD conversion by correcting a second digital signal, which is an AD conversion signal of an analog signal, based on a first digital signal, which is an AD conversion signal of a zero signal.
  • the present invention provides a zero correction system capable of effectively correcting a zero deviation of a signal, and a zero correction method using the same.
  • the object is, according to the present invention, a zero signal generator for generating a zero signal; An analog signal generator for generating an analog signal; A switch unit configured to receive the zero signal and the analog signal; A conversion unit converting the zero signal received from the switch unit to generate a first digital signal, or converting the analog signal received from the switch unit to generate a second digital signal; And a controller for correcting the second digital signal based on the first digital signal to generate a third digital signal.
  • the controller may control the switch unit such that the zero signal is input to the converter or the analog signal is input to the converter.
  • the third digital signal may be a value obtained by subtracting a value of the first digital signal from a value of the second digital signal.
  • a zero signal generator for generating a zero signal
  • an analog signal generator for inputting an analog signal
  • a switch unit for receiving the zero signal and the analog signal
  • the switch unit A conversion unit for generating a first digital signal by converting the zero signal received from the digital signal or a second digital signal by converting the analog signal received from the switch unit, and the second digital signal based on the first digital signal;
  • a zero correction method using a zero correction system comprising a control unit for generating a third digital signal by correcting a digital signal, comprising: a first input step of inputting the zero signal generated by the zero signal generation unit to the switch unit; A second input step of inputting the analog signal generated by the analog signal generator to the switch unit; A first control step of controlling, by the control unit, the switch unit such that the zero signal is input from the switch unit to the conversion unit; A first conversion step of the conversion unit converting the zero signal to generate the first digital signal; A second control step of controlling, by the control unit, the switch unit such that
  • the third digital signal may be a value obtained by subtracting a value of the first digital signal from a value of the second digital signal.
  • the deviation of the signal generated at the time of AD conversion can be corrected effectively. According to this, since a separate tuning process for zero deviation does not need to be performed, the efficiency of the production process of the device is greatly improved, and stable operation of the device is ensured even under the influence of aging of the external environment and internal circuit elements. Therefore, the reliability of the device is greatly improved.
  • Figure 1 shows the overall configuration of the zero point correction system according to an embodiment of the present invention
  • FIG. 2 illustrates a signal flow diagram between components of a zero point correction system according to an embodiment of the present invention
  • FIG. 3 is a flowchart illustrating a zero correction method using a zero correction system according to an exemplary embodiment of the present invention.
  • FIG. 1 shows the overall configuration of a zero correction system according to an embodiment of the present invention
  • FIG. 2 shows a signal flow diagram between the configurations of the zero correction system according to an embodiment of the present invention.
  • the zero point correction system 100 includes a zero point signal generator 110, an analog signal generator 120, a switch 130, and a converter. 140 and the controller 150.
  • the zero signal generating unit 110 generates a zero signal, and is electrically connected to the switch unit 130 to transmit the generated zero signal to the switch unit 130 described later.
  • the zero point signal means a signal used to determine a reference point of generation when an analog signal is converted and a digital signal is generated, and is provided as an analog type signal.
  • the zero signal is generated in the above-described zero signal generator 110 and transferred to the switch unit 130.
  • the control unit 150 controls the switch unit 130 to control the switch unit 130.
  • 140 is then converted into a first digital signal through an amplification and modulation process.
  • the analog signal generation unit 120 generates an analog signal, and is electrically connected to the switch unit 130 to transfer the generated analog signal to the switch unit 130 described later.
  • the analog signal is a signal for a physical variable, and may be, for example, a temperature signal, a humidity signal, a position signal, or the like.
  • the analog signal is generated in the analog signal generation unit 120 and transferred to the switch unit 130, and then the control unit 150 controls the switch unit 130 from the switch unit 130 to the conversion unit 140 After transmission, the signal is converted into a second digital signal through amplification and conversion.
  • the switch unit 130 receives the zero signal and the analog signal, and is electrically connected to the zero signal generator 110 and the analog signal generator 120 described above.
  • the switch unit 130 When the switch unit 130 receives the zero selection signal from the control unit 150, the switch unit 130 transmits the zero signal to the conversion unit 140. When the switch unit 130 receives the analog selection signal from the control unit 150, the switch unit converts the analog signal. Forward to 140.
  • a zero signal or an analog signal may be selectively input to the conversion unit 140.
  • the conversion unit 140 converts the zero signal received from the switch unit 130 to generate a first digital signal, or converts the analog signal received from the switch unit 130 to generate a second digital signal. It is electrically connected to the above-described switch unit 130 and the controller 150 to be described later.
  • the converter 140 amplifies and modulates a zero signal or an analog signal, and AD (Analog to Digital) conversion is performed through this process. Thereafter, the first digital signal or the second digital signal generated by the conversion is transmitted to the controller 150.
  • AD Analog to Digital
  • the controller 150 generates a third digital signal by correcting the second digital signal based on the first digital signal, and is electrically connected to the switch unit 130 and the conversion unit 140 described above.
  • the controller 150 generates a third digital signal by performing an operation of subtracting the value of the first digital signal from the value of the second digital signal.
  • the zero signal is affected by the temperature around the device and various electromagnetic waves, and the internal circuits of the switch unit 130 and the conversion unit 140 in the process of passing through the internal circuits of the switch unit 130 and the conversion unit 140.
  • the first digital signal has a value in which such an influence is reflected as it is changed under the influence of.
  • the analog signal is also affected by the temperature and various electromagnetic waves around the device, similar to the above-described zero signal, and the switch unit 130 and the conversion unit in the process of passing through the internal circuits of the switch unit 130 and the conversion unit 140. Since the change is affected by the internal circuit itself of the unit 140, the second digital signal has a value in which such an influence is reflected.
  • the third digital signal is a signal in which the deviation of the zero point is accurately corrected.
  • controller 150 controls the switch unit 130 so that a zero signal is input to the converter 140 or an analog signal is input to the converter 140.
  • a zero signal or an analog signal may be selectively input to the converter 140 from the switch 130.
  • the zero point correction system includes the zero signal generator 110, the analog signal generator 120, the switch 130, the converter 140, and the controller 150. According to (100), the deviation of the signal generated during the AD conversion can be effectively corrected. According to this, since a separate tuning process for zero deviation does not need to be performed, the efficiency of the device production process is greatly improved, and stable operation of the device is ensured even under the influence of external environment and aging of internal circuit elements. The reliability of the device is greatly improved. In addition, when a plurality of devices are installed in the production line, the same digital output is secured, so that the productivity of the production line can be greatly improved.
  • FIG. 3 is a flowchart illustrating a zero correction method using a zero correction system according to an exemplary embodiment of the present invention.
  • the zero point correction method S100 using the zero point correction system includes a first input step S110, a second input step S120, and a first control step S130. ), A first conversion step S140, a second control step S150, a second conversion step S160, and a generation step S170.
  • a zero signal generated by the zero signal generator 110 is input to the switch unit 130.
  • the zero point signal means a signal used to determine a reference point of generation when an analog signal is converted and a digital signal is generated, and is provided as an analog type signal.
  • the zero signal is generated in the above-described zero signal generator 110 and transferred to the switch unit 130.
  • the control unit 150 controls the switch unit 130 to control the switch unit 130.
  • 140 is then converted into a first digital signal through an amplification and modulation process.
  • an analog signal generated by the analog signal generator 120 is input to the switch unit 130.
  • the analog signal is a signal for a physical variable, and may be, for example, a temperature signal, a humidity signal, a position signal, or the like.
  • the analog signal is generated in the analog signal generation unit 120 and transferred to the switch unit 130, and then the control unit 150 controls the switch unit 130 from the switch unit 130 to the conversion unit 140 After transmission, the signal is converted into a second digital signal through amplification and modulation.
  • the first control step S130 is a step in which the control unit 150 controls the switch unit 130 so that a zero signal is input from the switch unit 130 to the converter 140.
  • the first conversion step S140 is a step in which the conversion unit 140 converts the zero signal to generate a first digital signal, which is performed after the first control step S130 described above.
  • the zero signal input to the converter 140 is amplified and modulated while passing through the internal circuit of the converter 140.
  • AD conversion is performed by this process, and as a result, a first digital signal is generated. Thereafter, the generated first digital signal is transmitted to the controller 150.
  • the zero signal is affected by the temperature around the device and various electromagnetic waves, and the switch unit 130 and the conversion unit in the process of passing through the first input step S110, the first control step S130, and the first conversion step S140. Since the change is affected by the internal circuit itself of the unit 140, the first digital signal has a value in which such an influence is reflected.
  • the second control step S150 is a step in which the control unit 150 controls the switch unit 130 so that an analog signal is input from the switch unit 130 to the converter 140, and the above-described second input step S120 is performed. It is then carried out.
  • the second conversion step S160 is a step in which the conversion unit 140 converts an analog signal to generate a second digital signal, which is performed after the second control step S150 described above.
  • the analog signal input to the converter 140 is amplified and modulated while passing through the internal circuit of the converter 140. AD conversion is performed by this process, and as a result, a second digital signal is generated. Thereafter, the generated second digital signal is transmitted to the controller 150.
  • Analog signal is also affected by the temperature and various electromagnetic waves around the device like the above-described zero signal, the switch in the process of going through the second input step (S120), the second control step (S150), the second conversion step (S160) Since the internal circuits of the unit 130 and the conversion unit 140 are changed under the influence of the internal circuits themselves, the second digital signal has a value that reflects the influence.
  • the controller 150 In operation S170, the controller 150 generates a third digital signal by correcting the second digital signal based on the first digital signal.
  • the controller 150 According to the generation step S170, the controller 150 generates a third digital signal by subtracting the value of the first digital signal from the value of the second digital signal.
  • the third digital signal is a signal in which the deviation of the zero point is corrected correctly.
  • the first input step S110, the second input step S120, the first control step S130, the first conversion step S140, the second control step S150, and the second conversion step S160 are described.
  • the zero point correction method (S100) using the zero point correction system according to an embodiment of the present invention including the generation step (S170) the deviation of the signal generated during the AD conversion can be effectively corrected.
  • the efficiency of the production process of the device is greatly improved, and stable operation of the device is ensured even under the influence of aging of the external environment and internal circuit elements. Therefore, the reliability of the device is greatly improved.
  • the same digital output is secured, so that the productivity of the production line can be greatly improved.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

La présente invention concerne un système de correction de point zéro et un procédé de correction de point zéro l'utilisant, et concerne plus particulièrement : un système de correction de point zéro permettant de corriger efficacement un écart de point zéro d'un signal, qui se produit au cours d'une conversion analogique numérique, en corrigeant un deuxième signal numérique, qui est un signal de conversion analogique numérique d'un signal analogique, sur la base d'un premier signal numérique, qui est un signal de conversion analogique numérique d'un signal de point zéro ; et un procédé de correction de point zéro l'utilisant.
PCT/KR2017/005861 2016-10-17 2017-06-05 Système de correction de point zéro et procédé de correction de point zéro l'utilisant WO2018074692A1 (fr)

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KR1020160134198A KR101711875B1 (ko) 2016-10-17 2016-10-17 영점 보정 시스템 및 이를 이용한 영점 보정 방법
KR10-2016-0134198 2016-10-17

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WO2018074692A1 true WO2018074692A1 (fr) 2018-04-26

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JP5977470B1 (ja) 2015-08-05 2016-08-24 富士カプセル株式会社 軟カプセル皮膜用組成物

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH069233U (ja) * 1992-07-10 1994-02-04 日新電機株式会社 信号特性補正回路
JP2006109403A (ja) * 2004-09-07 2006-04-20 Sharp Corp デジタル補正アナログ／デジタル変換器
KR20090085283A (ko) * 2008-02-04 2009-08-07 주식회사 포스콘 아날로그 디지털 변환기의 오차 보정 장치 및 방법
KR101059381B1 (ko) * 2009-08-19 2011-08-25 김지홍 영점 및 스팬을 조절하는 아날로그신호 보정장치
KR101534252B1 (ko) * 2013-05-09 2015-07-08 (주)와이즈산전 압력센서의 구동회로 및 오차 보상 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH069233U (ja) * 1992-07-10 1994-02-04 日新電機株式会社 信号特性補正回路
JP2006109403A (ja) * 2004-09-07 2006-04-20 Sharp Corp デジタル補正アナログ／デジタル変換器
KR20090085283A (ko) * 2008-02-04 2009-08-07 주식회사 포스콘 아날로그 디지털 변환기의 오차 보정 장치 및 방법
KR101059381B1 (ko) * 2009-08-19 2011-08-25 김지홍 영점 및 스팬을 조절하는 아날로그신호 보정장치
KR101534252B1 (ko) * 2013-05-09 2015-07-08 (주)와이즈산전 압력센서의 구동회로 및 오차 보상 방법

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