CN105651159A - High-precision digital demodulation and combination circuit - Google Patents
High-precision digital demodulation and combination circuit Download PDFInfo
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- CN105651159A CN105651159A CN201410625996.5A CN201410625996A CN105651159A CN 105651159 A CN105651159 A CN 105651159A CN 201410625996 A CN201410625996 A CN 201410625996A CN 105651159 A CN105651159 A CN 105651159A
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- circuit
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- combinational
- combination
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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
Technical field
The present invention relates to a kind of high accuracy number demodulation and combinational circuit, belong to circuit signal Detection Techniques field.
Background technology
Current angular surveying device mainly has rotary transformer and photoelectric encoder, wherein rotary transformer has precision height, reliability is high, good manufacturability, the advantages such as environmental suitability is strong, therefore, apply widely in photovoltaic field, but currently all stabilisation systems product has widely applied rotary transformer, in the application, owing to its single channel all adopted detects electric power, thus result in the range of application of current device, accuracy of detection is all relatively low, and system run all right and system can not meet some high accuracy, quickly detect needs, it is thus desirable to develop a kind of novel testing circuit to meet currently used needs.
Summary of the invention
The object of the invention is that and overcomes above-mentioned deficiency, it is provided that a kind of high accuracy number demodulation and combinational circuit.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of high accuracy number demodulation and combinational circuit, it is made up of coding circuit, combinational circuit, sine and cosine pumping signal circuit, phase-adjusting circuit and I/O interface circuit, wherein combinational circuit is made up of two-way AC sine amplitude-modulated signal circuit for generating parallel connection, coding circuit one end is connected with combinational circuit, the other end is connected with sine and cosine pumping signal circuit, position adjustment circuit and I/O interface circuit respectively through data storage circuit, I/O interface is separately connected with combinational circuit and sine and cosine pumping signal circuit, separately sets data storage circuit between I/O interface and combinational circuit.
Sine modulation signal generating circuit is for be made up of RDC19222 chip and accessory circuit thereof.
Coding circuit is for be made up of SMJ27C256-20JM chip and accessory circuit thereof.
Data storage circuit is for be made up of 74LS393J chip and accessory circuit thereof.
The testing circuit that the present invention is more traditional has that system integration degree is high, detection numerical range is wide, good operation stability and high specific of running precision, and has wide in range interface function, can effectively meet the detection needs of multiple external circuit equipment.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present invention.
Detailed description of the invention
As shown in Figure 1, a kind of high accuracy number demodulation and combinational circuit, by coding circuit, combinational circuit, sine and cosine pumping signal circuit, phase-adjusting circuit and I/O interface circuit are constituted, wherein combinational circuit is made up of two-way AC sine amplitude-modulated signal circuit for generating parallel connection, and sine modulation signal generating circuit is for be made up of RDC19222 chip and accessory circuit thereof, coding circuit is made up of SMJ27C256-20JM chip and accessory circuit thereof, and its one end is connected with combinational circuit, the other end is respectively through data storage circuit and sine and cosine pumping signal circuit, position adjusts circuit and I/O interface circuit connects, I/O interface is separately connected with combinational circuit and sine and cosine pumping signal circuit, data storage circuit is separately set between I/O interface and combinational circuit, wherein data storage circuit is for be made up of 74LS393J chip and accessory circuit thereof.
Above in conjunction with accompanying drawing, the preferred embodiment for the present invention is described in detail; but the present invention is not limited to above-mentioned embodiment; in the ken that those of ordinary skill in the art possess, it is also possible to make a variety of changes under the premise without departing from present inventive concept and each fall within this programme protection domain.
Claims (4)
1. a high accuracy number demodulation and combinational circuit, it is characterized in that: described high accuracy number demodulation and combinational circuit are by coding circuit, combinational circuit, sine and cosine pumping signal circuit, phase-adjusting circuit and I/O interface circuit are constituted, wherein combinational circuit is made up of two-way AC sine amplitude-modulated signal circuit for generating parallel connection, described coding circuit one end is connected with combinational circuit, the other end is respectively through data storage circuit and sine and cosine pumping signal circuit, position adjusts circuit and I/O interface circuit connects, described I/O interface is separately connected with combinational circuit and sine and cosine pumping signal circuit, data storage circuit is separately set between described I/O interface and combinational circuit.
2. a kind of high accuracy number demodulation according to claim 1 and combinational circuit, it is characterised in that: described sine modulation signal generating circuit is for be made up of RDC19222 chip and accessory circuit thereof.
3. a kind of high accuracy number demodulation according to claim 1 and combinational circuit, is characterized in that: described coding circuit is for be made up of SMJ27C256-20JM chip and accessory circuit thereof.
4. a kind of high accuracy number demodulation according to claim 1 and combinational circuit, is characterized in that: described data storage circuit is for be made up of 74LS393J chip and accessory circuit thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410625996.5A CN105651159A (en) | 2014-11-10 | 2014-11-10 | High-precision digital demodulation and combination circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410625996.5A CN105651159A (en) | 2014-11-10 | 2014-11-10 | High-precision digital demodulation and combination circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105651159A true CN105651159A (en) | 2016-06-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410625996.5A Pending CN105651159A (en) | 2014-11-10 | 2014-11-10 | High-precision digital demodulation and combination circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105651159A (en) |
Citations (8)
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|---|---|---|---|---|
| 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 |
| 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 |
| CN103576206A (en) * | 2012-07-31 | 2014-02-12 | 上海太易检测技术有限公司 | Metal detector |
-
2014
- 2014-11-10 CN CN201410625996.5A patent/CN105651159A/en active Pending
Patent Citations (8)
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 席伟等: "基于DSP的双路RDC角位置检测系统的设计", 《机电产品开发与创新》 * |
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