CN105651159A - High-precision digital demodulation and combination circuit - Google Patents

High-precision digital demodulation and combination circuit Download PDF

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Publication number
CN105651159A
CN105651159A CN 201410625996 CN201410625996A CN105651159A CN 105651159 A CN105651159 A CN 105651159A CN 201410625996 CN201410625996 CN 201410625996 CN 201410625996 A CN201410625996 A CN 201410625996A CN 105651159 A CN105651159 A CN 105651159A
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CN
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Prior art keywords
circuit
combination
high
digital demodulation
interface
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CN 201410625996
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Chinese (zh)
Inventor
韩建军
靳文忠
范玲
辛玫
陈小鹏
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河南平原光电有限公司
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Abstract

The invention discloses a high-precision digital demodulation and combination circuit which is composed of a coding circuit, a combination circuit, a sine and cosine excitation signal circuit, a phase adjustment circuit and an I/O interface circuit. The combination circuit is composed of two alternating-current sine amplitude modulation signal generating circuits connected in parallel. One end of the coding circuit is connected with the combination circuit, and the other end is connected with the sine and cosine excitation signal circuit, the phase adjustment circuit and the I/O interface circuit through a data memory circuit. The I/O interface circuit is further connected with the combination circuit and the sine and cosine excitation signal circuit. The data memory circuit is arranged between the I/O interface circuit and the combination circuit. Compared with the traditional detection circuit, the high-precision digital demodulation and combination circuit has the characteristics of high degree of system integration, wide test numerical range, high operation stability and high operation precision, has broad interface functions, and can effectively satisfy the detection needs of a variety of external circuit equipment.

Description

一种高精度数字解调与组合电路 In combination with a high-precision digital demodulation circuit

技术领域 FIELD

[0001] 本发明涉及一种高精度数字解调与组合电路,属电路信号探测技术领域。 [0001] The present invention relates to compositions with a high-precision digital demodulation circuit, a signal detection circuit technical field.

背景技术 Background technique

[0002]目前角度测量器件主要有旋转变压器与光电编码器,其中旋转变压器具有精度高、可靠性高、工艺性好、环境适应性强等优点,因此,在光电产品领域应用非常广泛,但现在所有稳定系统产品中大量应用了旋转变压器,在应用中,由于其均采用的单通道检测电力,从而导致了当前设备的应用范围、检测精度均较低,且系统运行稳定性及系统不能满足一些高精度、快速检测需要,因此需要开发一种新型的检测电路以满足当前使用的需要。 [0002] Currently there are angle-measuring device with a photoelectric encoder resolver, wherein the rotary transformer having a high accuracy, high reliability, good processability, adaptability to environment, etc., and therefore, in the field of optical products is widely used, but now All products in the stabilization system of a large number of rotary transformer applications, in the application, since the single channel detector power which are used, resulting in the current scope of application of the device, the detection precision are low, and the operation stability and the system can not meet some systems high precision, rapid detection, it is necessary to develop a new detection circuit to meet the needs of the current use.

发明内容 SUMMARY

[0003] 本发明目的就在于克服上述不足,提供一种高精度数字解调与组合电路。 [0003] The object of the present invention is to overcome the above deficiencies, and provides a high precision digital demodulation circuit in combination.

[0004] 为实现上述目的,本发明是通过以下技术方案来实现: [0004] To achieve the above object, the present invention is achieved by the following technical solution:

一种高精度数字解调与组合电路,由编码电路、组合电路、正余弦激励信号电路、相位调整电路及I/o接口电路构成,其中组合电路由两路交流正弦调幅信号发生电路并联构成,编码电路一端与组合电路连接,另一端分别通过数据存储器电路与正余弦激励信号电路、位调整电路及I/o接口电路连接,I/O接口另与组合电路及正余弦激励信号电路连接,I /0接口与组合电路间另设数据存储器电路。 In combination with a high-precision digital demodulation circuit, a coding circuit, a combining circuit, the excitation signal circuit cosine, and the phase adjustment circuit I / o interface circuit configuration, the AC combining circuit wherein two-sine signal generation circuit constructed in parallel, encoding circuit one end of a combining circuit connected to the other terminal through the data memory circuit and the cosine excitation signal circuits, adjusting circuit and the I / o interface circuit is connected, I / O interfaces further connected to the combining circuit and the cosine excitation signal circuits, I Room / 0 interface circuit in combination with a separate data memory circuit.

[0005] 正弦调幅信号发生电路为由RDC19222芯片及其附属电路构成。 [0005] Sine Amplitude signal generating circuit by its subsidiary RDC19222 circuit chip.

[0006] 编码电路为由SMJ27C256-20JM芯片及其附属电路构成。 [0006] The encoding circuit chip by its subsidiary SMJ27C256-20JM circuit.

[0007] 数据存储器电路为由74LS393J芯片及其附属电路构成。 [0007] The data memory circuit by chip and subsidiary 74LS393J circuit.

[0008] 本发明较传统的检测电路具有系统集成化程度高、检测数值范围广、运行稳定性好及运行精度高的特定,并具有宽泛的接口功能,可有效满足多种外部电路设备的检测需要。 [0008] The present invention than the conventional detection circuit having a high degree of system integration, testing a wide range of values, good running stability and high accuracy specific operation, and have a broad interface function more effectively meet the testing device external circuit need.

附图说明 BRIEF DESCRIPTION

[0009] 图1为本发明电路结构示意图。 [0009] FIG. 1 is a schematic circuit configuration of the present invention.

具体实施方式 detailed description

[0010] 如图1所示,一种高精度数字解调与组合电路,由编码电路、组合电路、正余弦激励信号电路、相位调整电路及I/o接口电路构成,其中组合电路由两路交流正弦调幅信号发生电路并联构成,且正弦调幅信号发生电路为由RDC19222芯片及其附属电路构成,编码电路由SMJ27C256-20JM芯片及其附属电路构成,且其一端与组合电路连接,另一端分别通过数据存储器电路与正余弦激励信号电路、位调整电路及I/O接口电路连接,I/O接口另与组合电路及正余弦激励信号电路连接,I/O接口与组合电路间另设数据存储器电路,其中数据存储器电路为由74LS393J芯片及其附属电路构成。 [0010] As shown, in combination with a high-precision digital demodulation circuit, a coding circuit, a combining circuit, the excitation signal circuit cosine, and the phase adjustment circuit I / o interface circuit configuration, wherein the combination of the two circuits 1 AC sinusoidal amplitude modulation parallel signal generation circuit configuration, and by sinusoidal amplitude modulation signal generation circuit chip and subsidiary RDC19222 circuit, a coding circuit chip and SMJ27C256-20JM attachment circuit, and which combining circuit is connected at one end to the other end respectively data memory circuit and the cosine excitation signal circuits, adjusting circuit and I / O interface circuit is connected, I / O interface further connected to the combining circuit and the cosine excitation signal circuit between the I / O interface with the combining circuit separate data memory circuit wherein the data memory circuit by chip and subsidiary 74LS393J circuit.

[0011] 上面结合附图对本发明优选实施方式进行了详细说明,但是本发明并不限于上述实施方式,在本领域普通技术人员所具备的知识范围内,还可以在不脱离本发明宗旨的前提下做出各种变化均落入本方案保护范围。 Premise binding [0011] The above drawings, preferred embodiments of the present invention has been described in detail, but the present invention is not limited to the above embodiments, one of ordinary skill in the art have the knowledge range, may also be without departing from the spirit of the invention under that various variations are within the scope of protection of the present scheme.

Claims (4)

  1. 1.一种高精度数字解调与组合电路,其特征在于:所述的高精度数字解调与组合电路由编码电路、组合电路、正余弦激励信号电路、相位调整电路及I/o接口电路构成,其中组合电路由两路交流正弦调幅信号发生电路并联构成,所述的编码电路一端与组合电路连接,另一端分别通过数据存储器电路与正余弦激励信号电路、位调整电路及I/o接口电路连接,所述的I/o接口另与组合电路及正余弦激励信号电路连接,所述的I/O接口与组合电路间另设数据存储器电路。 A precision digital demodulation and combining circuit, wherein: said digital demodulation with high precision by the encoding circuit combining circuit, the combining circuit, the excitation signal circuit cosine, and the phase adjustment circuit I / o interface circuit configuration, wherein the combination of two sinusoidal alternating current circuit is an amplitude modulated signal generating circuit constructed in parallel, the encoding circuit connected to one end of the combining circuit, respectively, through the other end of the data memory circuit and the excitation sine and cosine signal circuit, and the bit adjustment circuit I / o interfaces circuit connecting said I / o interfaces connected to the combining circuit and the other cosine excitation signal circuit, between the I / O interface circuit in combination with a separate data memory circuit.
  2. 2.根据权利要求1所述的一种高精度数字解调与组合电路,其特征在于:所述的正弦调幅信号发生电路为由RDC19222芯片及其附属电路构成。 A precision digital demodulation circuit combination according to claim 1, characterized in that: said sinusoidal amplitude modulation signal generating circuit by its subsidiary RDC19222 circuit chip.
  3. 3.根据权利要求1所述的一种高精度数字解调与组合电路,其特征是:所述的编码电路为由SMJ27C256-20JM芯片及其附属电路构成。 A precision digital demodulation circuit combination according to claim 1, wherein: said encoding circuit chip by its subsidiary SMJ27C256-20JM circuit.
  4. 4.根据权利要求1所述的一种高精度数字解调与组合电路,其特征是:所述的数据存储器电路为由74LS393J芯片及其附属电路构成。 The combination of a high-precision digital demodulation circuit according to claim 1, wherein: said data memory circuit by chip and subsidiary 74LS393J circuit.
CN 201410625996 2014-11-10 2014-11-10 High-precision digital demodulation and combination circuit CN105651159A (en)

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CN1910459A (en) * 2004-01-23 2007-02-07 东芝电梯株式会社 Rotation detection device
CN101231367A (en) * 2007-01-24 2008-07-30 中国科学院半导体研究所 High resolution wavelength demodulation system and demodulation method thereof
CN102564294A (en) * 2010-10-27 2012-07-11 欧姆龙汽车电子株式会社 Rotational angle detection device
CN202372137U (en) * 2011-12-12 2012-08-08 西安瑞日电子发展有限公司 Angle sensor demodulation structure on basis of coherent demodulation technology
CN202614932U (en) * 2012-01-19 2012-12-19 岳阳千盟电子有限公司 Induction wireless position vehicle-mounted detecting device based on digital signal processing (DSP) platform
CN102879017A (en) * 2012-09-25 2013-01-16 天水七四九电子有限公司 Novel double-speed coarse and fine combination system for resolver-to-digital converter
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Publication number Priority date Publication date Assignee Title
US20030220764A1 (en) * 2002-03-08 2003-11-27 Sokkoia Company Limited Surveying apparatus
CN1910459A (en) * 2004-01-23 2007-02-07 东芝电梯株式会社 Rotation detection device
CN101231367A (en) * 2007-01-24 2008-07-30 中国科学院半导体研究所 High resolution wavelength demodulation system and demodulation method thereof
CN102564294A (en) * 2010-10-27 2012-07-11 欧姆龙汽车电子株式会社 Rotational angle detection device
CN202372137U (en) * 2011-12-12 2012-08-08 西安瑞日电子发展有限公司 Angle sensor demodulation structure on basis of coherent demodulation technology
CN202614932U (en) * 2012-01-19 2012-12-19 岳阳千盟电子有限公司 Induction wireless position vehicle-mounted detecting device based on digital signal processing (DSP) platform
CN103576206A (en) * 2012-07-31 2014-02-12 上海太易检测技术有限公司 Metal detector
CN102879017A (en) * 2012-09-25 2013-01-16 天水七四九电子有限公司 Novel double-speed coarse and fine combination system for resolver-to-digital converter

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