CN109327223A - A kind of digital signal revolving die intends signal method and system - Google Patents
A kind of digital signal revolving die intends signal method and system Download PDFInfo
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- CN109327223A CN109327223A CN201811161177.4A CN201811161177A CN109327223A CN 109327223 A CN109327223 A CN 109327223A CN 201811161177 A CN201811161177 A CN 201811161177A CN 109327223 A CN109327223 A CN 109327223A
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- H03—ELECTRONIC CIRCUITRY
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- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
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Abstract
The invention discloses a kind of digital signal revolving dies to intend signal method, includes the following steps: to obtain excited signal, obtains reference signal；Digital signal to be converted is obtained, the angle of digital signal to be converted is resolved；Using the angle of digital signal to be converted, the digital-to-analogue conversion code of analog signal is calculated based on digital signal to be converted and the no-load voltage ratio of target simulation signal；Amplitude modulation analog signal is exported using digital-to-analogue conversion code；Reference signal is multiplied with amplitude modulation with analog signal, obtains analog signal after amplitude modulation；Analog signal obtains target simulation signal after amplification amplitude modulation.Compared with intending signaling module using the digital signal revolving die of dedicated high-cost Highgrade integration in the prior art, the conversion method step of the application is simple, and the requirement to hardware is low, can reduce the cost of digital and analogue signals conversion.In addition, disclosed herein as well is a kind of digital signals to turn analog signal instrumentation, the apparatus structure is simple, and manufacturing cost is low, can significantly reduce the cost of digital and analogue signals conversion.
Description
Technical field
The present invention relates to signal processing technology fields more particularly to a kind of digital signal revolving die to intend signal method and system.
Background technique
With the development of electronic technology, digital signal is anti-interference strong with its, noiseless accumulation, convenient for encryption, storage, processing
The advantages that with exchange, become the first choice of signal output.But in actual use, the input letter that some auxiliary devices need
It number is analog signal, and these equipment prices are expensive, replacement cost is excessively high, therefore digital signal is also needed to be converted into simulating
The equipment of signal.For example, the course signal of platform compass peculiar to vessel, pitching and roll attitude signal, repeater compass, course data record
Instrument etc.
Existing equipment is all to intend signaling module using the digital signal revolving die of Highgrade integration on the market, at high cost.
Therefore, how a kind of new technical solution is provided, realizes that the digital signal of low cost turns analog signal, becomes this
Field technical staff's urgent problem.
Summary of the invention
In view of the above shortcomings of the prior art, the technical problem to be solved by the present invention is how to provide a kind of new
Technical solution realizes that the digital signal of low cost turns analog signal.
In order to solve the above technical problems, present invention employs the following technical solutions:
A kind of quasi- signal method of digital signal revolving die, includes the following steps:
Excited signal is obtained, when excited signal is identical as target simulation signal voltage, using excited signal as target mould
The reference signal sin ω t of quasi- signal adjusts excited signal voltage when excited signal and target simulation signal voltage difference
To rear reference signal sin ω t as target simulation signal identical as target simulation signal voltage, target simulation signal can be indicated
For k0Sin ω tsin θ and k0Sin ω tcos θ, wherein k0The amplification coefficient of target simulation signal, sin θ and
Cos θ is the digital-to-analogue conversion code of target simulation signal；
Digital signal to be converted is obtained, the angle of digital signal to be converted is resolved；
Using the angle of digital signal to be converted, mould is calculated based on digital signal to be converted and the no-load voltage ratio of target simulation signal
The digital-to-analogue conversion code sin θ and cos θ of quasi- signal；
Amplitude modulation analog signal is exported using digital-to-analogue conversion code sin θ and cos θ；
Reference signal sin ω t is multiplied with amplitude modulation with analog signal, obtain after amplitude modulation analog signal sin ω tsin θ and
sinωt·cosθ；
Based on amplification coefficient k0Analog signal sin ω tsin θ and sin ω tcos θ obtains target mould after amplification amplitude modulation
Quasi- signal k0Sin ω tsin θ and k0·sinωt·cosθ。
A kind of digital signal revolving die intends signal system, including processor, digital-analogue converting device, hardware multiplier and the
One operational amplifier, in which:
The input terminal of processor is connected with the output end of digital signal to be converted, the output end and digital simulation of processor
The input terminal of conversion equipment is connected, and the processor resolves digital signal to be converted for obtaining digital signal to be converted
Angle, using the angle of digital signal to be converted, the no-load voltage ratio calculating simulation based on digital signal to be converted and target simulation signal
The digital-to-analogue conversion code sin θ and cos θ of signal, are sent to digital-analogue converting device for digital-to-analogue conversion code sin θ and cos θ；
The output end of digital-analogue converting device is connected with the first input end of hardware multiplier, and the digital simulation turns
Changing device is used to export amplitude modulation analog signal using digital-to-analogue conversion code sin θ and cos θ, and amplitude modulation is sent to firmly with analog signal
Part multiplier；
Second input terminal of hardware multiplier is connected with the output end of reference signal, the output end of hardware multiplier and
The input terminal of one operational amplifier is connected, and hardware multiplier is used for reference signal sin ω t and amplitude modulation analog signal phase
Multiply, obtain analog signal sin ω tsin θ and sin ω tcos θ after amplitude modulation, sends analog signal sin ω tsin after amplitude modulation
θ and sin ω tcos θ is to the first operational amplifier；
First operational amplifier is used to be based on amplification coefficient k0Analog signal sin ω tsin θ and sin ω after amplification amplitude modulation
Tcos θ obtains target simulation signal k0Sin ω tsin θ and k0·sinωt·cosθ。
It preferably, further include regulator, in which:
The input terminal of regulator is connected with the output end of excited signal, the output end and hardware multiplier of regulator
The second input terminal be connected, regulator is used for when excited signal and when target simulation signal voltage difference, by excited signal
Voltage is adjusted to rear reference signal sin ω t as target simulation signal identical as target simulation signal voltage.
Preferably, the digital-analogue converting device includes digital analog converter and second operational amplifier, in which:
The input terminal of digital analog converter is as the input terminal of digital-analogue converting device and the output end phase of processor
Connection, the output end of digital analog converter are connected with the input terminal of second operational amplifier, and digital analog converter is used for
Amplitude modulation analog signal to be processed is exported using digital-to-analogue conversion code sin θ and cos θ, and amplitude modulation to be processed is sent with analog signal
To second operational amplifier, the amplitude modulation analog signal to be processed only has true amplitude or only negative amplitude；
The output end of second operational amplifier as digital-analogue converting device output end and hardware multiplier first
Input terminal is connected, the amplitude modulation analog signal to be processed that second operational amplifier is used to there was only true amplitude or only negative amplitude
Processing is the amplitude modulation analog signal with true amplitude and negative amplitude.
In conclusion the invention discloses a kind of digital signal revolving dies to intend signal method, include the following steps: to obtain excitation
Signal, when excited signal is identical as target simulation signal voltage, using excited signal as the reference signal of target simulation signal
Sin ω t, when excited signal and when target simulation signal voltage difference, by excited signal voltage adjust to target simulation signal
Reference signal sin ω t after voltage is identical as target simulation signal, target simulation signal are represented by k0·sinωt·
Sin θ and k0Sin ω tcos θ, wherein k0It is the amplification coefficient of target simulation signal, sin θ and cos θ are target simulation letters
Number digital-to-analogue conversion code；Digital signal to be converted is obtained, the angle of digital signal to be converted is resolved；Utilize digital signal to be converted
Angle, based on digital signal to be converted and the no-load voltage ratio of target simulation signal calculate analog signal digital-to-analogue conversion code sin θ and
cosθ；Amplitude modulation analog signal is exported using digital-to-analogue conversion code sin θ and cos θ；Reference signal sin ω t and amplitude modulation are simulated
Signal multiplication obtains analog signal sin ω tsin θ and sin ω tcos θ after amplitude modulation；Based on amplification coefficient k0Amplify amplitude modulation
Analog signal sin ω tsin θ and sin ω tcos θ obtains target simulation signal k afterwards0Sin ω tsin θ and k0·sin
ωt·cosθ.Intend signaling module phase with the digital signal revolving die of dedicated high-cost Highgrade integration is used in the prior art
Than the conversion method step of the application is simple, and the requirement to hardware is low, can reduce the cost of digital and analogue signals conversion.In addition, this
Application also discloses a kind of quasi- signal system of digital signal revolving die, and the apparatus structure is simple, and manufacturing cost is low, can significantly reduce
The cost of digital and analogue signals conversion.
Detailed description of the invention
In order to keep the purposes, technical schemes and advantages of invention clearer, the present invention is made into one below in conjunction with attached drawing
The detailed description of step, in which:
Fig. 1 is that a kind of digital signal revolving die of disclosure of the invention intends the flow chart of signal method；
Fig. 2 is that a kind of digital signal revolving die of disclosure of the invention intends the structural schematic diagram of signal system.
Description of symbols: processor 1, hardware multiplier 3, the first operational amplifier 4, is adjusted digital-analogue converting device 2
Pressure device 5, digital analog converter 6, second operational amplifier 7.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing.
As shown in Figure 1, the invention discloses a kind of digital signal revolving dies to intend signal method, include the following steps:
S101, excited signal is obtained, when excited signal is identical as target simulation signal voltage, using excited signal as mesh
The reference signal sin ω t for marking analog signal, when excited signal and target simulation signal voltage difference, by excited signal voltage
It adjusts to rear reference signal sin ω t as target simulation signal identical as target simulation signal voltage, target simulation signal can
It is expressed as k0Sin ω tsin θ and k0Sin ω tcos θ, wherein k0It is the amplification coefficient of target simulation signal, sin θ
It is the digital-to-analogue conversion code of target simulation signal with cos θ；
S102, digital signal to be converted is obtained, resolves the angle of digital signal to be converted；
S103, using the angle of digital signal to be converted, the no-load voltage ratio based on digital signal to be converted and target simulation signal
The digital-to-analogue conversion code sin θ and cos θ of calculating simulation signal；
For example, the digital signal of input is 45 °, the no-load voltage ratio of digital signal and analog signal is 36:1, i.e. digital signal
360 ° of 36 ° of corresponding analog signals, then θ=10 ° of (45 ° -36 °), calculate digital-to-analogue conversion code sin θ and cos θ again later.
S104, amplitude modulation analog signal is exported using digital-to-analogue conversion code sin θ and cos θ；
S105, reference signal sin ω t is multiplied with amplitude modulation with analog signal, obtains analog signal sin ω t after amplitude modulation
Sin θ and sin ω tcos θ；
S106, it is based on amplification coefficient k0Analog signal sin ω tsin θ and sin ω tcos θ obtains mesh after amplification amplitude modulation
Mark analog signal k0Sin ω tsin θ and k0·sinωt·cosθ。
Compared with intending signaling module using the digital signal revolving die of dedicated high-cost Highgrade integration in the prior art,
The conversion method step of the application is simple, and the requirement to hardware is low, can reduce the cost of digital and analogue signals conversion.
As shown in Fig. 2, the invention also discloses a kind of digital signal revolving dies to intend signal system, including processor, digital mould
Quasi- conversion equipment, hardware multiplier and the first operational amplifier, in which:
The input terminal of processor is connected with the output end of digital signal to be converted, the output end and digital simulation of processor
The input terminal of conversion equipment is connected, and the processor resolves digital signal to be converted for obtaining digital signal to be converted
Angle, using the angle of digital signal to be converted, the no-load voltage ratio calculating simulation based on digital signal to be converted and target simulation signal
The digital-to-analogue conversion code sin θ and cos θ of signal, are sent to digital-analogue converting device for digital-to-analogue conversion code sin θ and cos θ；
The output end of digital-analogue converting device is connected with the first input end of hardware multiplier, and the digital simulation turns
Changing device is used to export amplitude modulation analog signal using digital-to-analogue conversion code sin θ and cos θ, and amplitude modulation is sent to firmly with analog signal
Part multiplier；
Second input terminal of hardware multiplier is connected with the output end of reference signal, the output end of hardware multiplier and
The input terminal of one operational amplifier is connected, and hardware multiplier is used for reference signal sin ω t and amplitude modulation analog signal phase
Multiply, obtain analog signal sin ω tsin θ and sin ω tcos θ after amplitude modulation, sends analog signal sin ω tsin after amplitude modulation
θ and sin ω tcos θ is to the first operational amplifier；
First operational amplifier is used to be based on amplification coefficient k0Analog signal sin ω tsin θ and sin ω after amplification amplitude modulation
Tcos θ obtains target simulation signal k0Sin ω tsin θ and k0·sinωt·cosθ。
In the present invention, processor can use C8051 single-chip microcontroller, and digital signal revolving die of the invention is intended signal system and used
The quasi- signal method of above-mentioned digital signal revolving die can be realized digital signal and turn analog signal, since digital signal of the invention turns
Analog signal system structure is simple, and hardware cost is low, in the prior art use highly integrated digital-to-analogue conversion module phase
Than cost is significantly reduced.
When it is implemented, further including regulator, in which:
The input terminal of regulator is connected with the output end of excited signal, the output end and hardware multiplier of regulator
The second input terminal be connected, regulator is used for when excited signal and when target simulation signal voltage difference, by excited signal
Voltage is adjusted to rear reference signal sin ω t as target simulation signal identical as target simulation signal voltage.
The voltage value for the signal that the excited signal of acquisition is needed with target load may be different, and then need to carry out at this time
Pressure regulation is carried out to excited signal, obtains the identical reference signal with load required voltage value.
When it is implemented, the digital-analogue converting device includes digital analog converter and second operational amplifier,
In:
The input terminal of digital analog converter is as the input terminal of digital-analogue converting device and the output end phase of processor
Connection, the output end of digital analog converter are connected with the input terminal of second operational amplifier, and digital analog converter is used for
Amplitude modulation analog signal to be processed is exported using digital-to-analogue conversion code sin θ and cos θ, and amplitude modulation to be processed is sent with analog signal
To second operational amplifier, the amplitude modulation analog signal to be processed only has true amplitude or only negative amplitude；
The output end of second operational amplifier as digital-analogue converting device output end and hardware multiplier first
Input terminal is connected, the amplitude modulation analog signal to be processed that second operational amplifier is used to there was only true amplitude or only negative amplitude
Processing is the amplitude modulation analog signal with true amplitude and negative amplitude.
In order to further decrease hardware cost, can be turned using the digital simulation that can only export positive amplitude or negative sense amplitude
Parallel operation, at this point, then needing will only using second operational amplifier in order to guarantee the complete of finally obtained target simulation signal
Have the amplitude modulation to be processed of true amplitude or only negative amplitude with analog signal processing be the amplitude modulation mould with true amplitude and negative amplitude
Quasi- signal.
In the present invention, amplification coefficient k0It is to be set according to the demand of load equipment, in addition, in the present invention, amplification is
Number k0Can be greater than 1 might be less that 1, therefore, the amplification only description to corresponding step in the application, not necessarily plus
Greatly, it is also possible to reduce.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although passing through ginseng
According to the preferred embodiment of the present invention, invention has been described, it should be appreciated by those of ordinary skill in the art that can
To make various changes to it in the form and details, without departing from the present invention defined by the appended claims
Spirit and scope.
Claims (4)
1. a kind of digital signal revolving die intends signal method, which comprises the steps of:
Excited signal is obtained, when excited signal is identical as target simulation signal voltage, is believed excited signal as target simulation
Number reference signal sin ω t, when excited signal and when target simulation signal voltage difference, by excited signal voltage adjust to
Reference signal sin ω t after target simulation signal voltage is identical as target simulation signal, target simulation signal are represented by
k0Sin ω tsin θ and k0Sin ω tcos θ, wherein k0It is the amplification coefficient of target simulation signal, sin θ and cos θ
It is the digital-to-analogue conversion code of target simulation signal；
Digital signal to be converted is obtained, the angle of digital signal to be converted is resolved；
Using the angle of digital signal to be converted, believed based on the no-load voltage ratio calculating simulation of digital signal to be converted and target simulation signal
Number digital-to-analogue conversion code sin θ and cos θ；
Amplitude modulation analog signal is exported using digital-to-analogue conversion code sin θ and cos θ；
Reference signal sin ω t is multiplied with amplitude modulation with analog signal, obtains analog signal sin ω tsin θ and sin after amplitude modulation
ωt·cosθ；
Based on amplification coefficient k0Analog signal sin ω tsin θ and sin ω tcos θ obtains target simulation signal after amplification amplitude modulation
k0Sin ω tsin θ and k0·sinωt·cosθ。
2. a kind of digital signal turns analog signal instrumentation, which is characterized in that including processor, digital-analogue converting device, hardware
Multiplier and the first operational amplifier, in which:
The input terminal of processor is connected with the output end of digital signal to be converted, the output end and digital-to-analogue conversion of processor
The input terminal of device is connected, and the processor is used to obtain digital signal to be converted, resolves the angle of digital signal to be converted,
Using the angle of digital signal to be converted, analog signal is calculated based on digital signal to be converted and the no-load voltage ratio of target simulation signal
Digital-to-analogue conversion code sin θ and cos θ are sent to digital-analogue converting device by digital-to-analogue conversion code sin θ and cos θ；
The output end of digital-analogue converting device is connected with the first input end of hardware multiplier, the digital-to-analogue conversion dress
It sets for using digital-to-analogue conversion code sin θ and cos θ output amplitude modulation analog signal, amplitude modulation to be sent to hardware multiplication with analog signal
Musical instruments used in a Buddhist or Taoist mass；
Second input terminal of hardware multiplier is connected with the output end of reference signal, the output end of hardware multiplier and the first fortune
The input terminal for calculating amplifier is connected, and hardware multiplier is obtained for reference signal sin ω t to be multiplied with amplitude modulation with analog signal
Analog signal sin ω tsin θ and sin ω tcos θ after to amplitude modulation, send amplitude modulation after analog signal sin ω tsin θ and
Sin ω tcos θ is to the first operational amplifier；
First operational amplifier is used to be based on amplification coefficient k0Analog signal sin ω tsin θ and sin ω t after amplification amplitude modulation
Cos θ obtains target simulation signal k0Sin ω tsin θ and k0·sinωt·cosθ。
3. digital signal as claimed in claim 2 turns analog signal instrumentation, which is characterized in that further include regulator, in which:
The input terminal of regulator is connected with the output end of excited signal, and the of the output end of regulator and hardware multiplier
Two input terminals are connected, and regulator is used for when excited signal and target simulation signal voltage difference, by excited signal voltage
It adjusts to rear reference signal sin ω t as target simulation signal identical as target simulation signal voltage.
4. digital signal as claimed in claim 2 turns analog signal instrumentation, which is characterized in that the digital-analogue converting device
Including digital analog converter and second operational amplifier, in which:
The input terminal of digital analog converter is connected as the input terminal of digital-analogue converting device with the output end of processor,
The output end of digital analog converter is connected with the input terminal of second operational amplifier, and digital analog converter is used to utilize number
Mould hand over word sin θ and cos θ export amplitude modulation analog signal to be processed, and amplitude modulation to be processed is sent to second with analog signal
Operational amplifier, the amplitude modulation analog signal to be processed only have true amplitude or only negative amplitude；
First input of the output end of second operational amplifier as the output end and hardware multiplier of digital-analogue converting device
End is connected, the amplitude modulation analog signal processing to be processed that second operational amplifier is used to there was only true amplitude or only negative amplitude
For the amplitude modulation analog signal with true amplitude and negative amplitude.
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| CN201811161177.4A CN109327223B (en) | 2018-09-30 | 2018-09-30 | Method and system for converting digital signal into analog signal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811161177.4A CN109327223B (en) | 2018-09-30 | 2018-09-30 | Method and system for converting digital signal into analog signal |
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Citations (4)
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|---|---|---|---|---|
| US6285307B1 (en) * | 1997-02-26 | 2001-09-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Method of and a device for analog signal sampling |
| KR20050000774A (en) * | 2003-06-24 | 2005-01-06 | 삼성전기주식회사 | Signal processor for electronic compass |
| US20160202088A1 (en) * | 2013-08-30 | 2016-07-14 | Panasonic Intellectual Property Management Co., Ltd. | Angular position detection device |
| CN107466445A (en) * | 2016-08-12 | 2017-12-12 | 上海联影医疗科技有限公司 | gradient power amplifier debugging method and system |
-
2018
- 2018-09-30 CN CN201811161177.4A patent/CN109327223B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6285307B1 (en) * | 1997-02-26 | 2001-09-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Method of and a device for analog signal sampling |
| KR20050000774A (en) * | 2003-06-24 | 2005-01-06 | 삼성전기주식회사 | Signal processor for electronic compass |
| US20160202088A1 (en) * | 2013-08-30 | 2016-07-14 | Panasonic Intellectual Property Management Co., Ltd. | Angular position detection device |
| CN107466445A (en) * | 2016-08-12 | 2017-12-12 | 上海联影医疗科技有限公司 | gradient power amplifier debugging method and system |
Non-Patent Citations (2)
| Title |
|---|
| ALEXANDER B. MANN: "The universal sampling ADC readout system of the COMPASS experiment", 《2009 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC)》 * |
| 刘峰: "某型数字磁罗经系统的设计方法探究", 《电子测试》 * |
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