CN204009479U - A kind of multifunctional virtual waveform generator - Google Patents
A kind of multifunctional virtual waveform generator Download PDFInfo
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- CN204009479U CN204009479U CN201420497325.0U CN201420497325U CN204009479U CN 204009479 U CN204009479 U CN 204009479U CN 201420497325 U CN201420497325 U CN 201420497325U CN 204009479 U CN204009479 U CN 204009479U
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Abstract
The utility model discloses a kind of multifunctional virtual waveform generator, comprise single-chip microcomputer and the watchdog circuit being connected with single-chip microcomputer respectively, amplitude and side-play amount regulating circuit, data distributor, serial line interface and wave memorizer, data distributor outputs signal to respectively frequency dividing circuit, frequency multiplier circuit and address production electric circuit, crystal oscillating circuit, frequency dividing circuit, frequency multiplier circuit, address production electric circuit is connected successively with wave memorizer, amplitude and side-play amount regulating circuit, wave memorizer all outputs signal to D/A modular converter, D/A modular converter outputs signal to respectively low-pass filter circuit, constant current source and Waveform generating circuit, low-pass filter circuit and Waveform generating circuit output signal to output and drive and holding circuit.The utility model is simple in structure, easy to operate, can produce frequency, amplitude, multiple waveforms such as square wave, sine wave, triangular wave, trapezoidal wave, sawtooth wave and pulse signal that side-play amount is adjustable, and floor area is little, and frequency stability is good.
Description
Technical field
The utility model relates to telemetry circuit technical field, relates in particular to a kind of multifunctional virtual waveform generator.
Background technology
In the measurement of traditional concept, the instrument adopting is in kind mostly, they establish one's own system, have the fixing instrument devices such as index dial, knob, switch, observing and controlling meeting is subject to the restriction of experimental period, place and experimental provision lazy weight, to teachers and students, brings inconvenience, simultaneously also need a large amount of different experimental facilitiess doing different experiments, experimental teaching unit floor area is large, uses inconvenience, and experiment fees is high.
Summary of the invention
The utility model object is to solve the aforementioned problems in the prior, provide a kind of simple in structure, easy to use, floor area is little, low-cost and can produce the multifunctional virtual waveform generator of frequency, amplitude, multiple waveforms such as square wave, sine wave, triangular wave, trapezoidal wave, sawtooth wave and pulse signal that side-play amount is adjustable.
The utility model is for achieving the above object, the technological means adopting is, a kind of multifunctional virtual waveform generator, comprise single-chip microcomputer and the watchdog circuit being connected with single-chip microcomputer respectively, amplitude and side-play amount regulating circuit, data distributor, serial line interface and wave memorizer, data distributor outputs signal to respectively frequency dividing circuit, frequency multiplier circuit and address production electric circuit, crystal oscillating circuit, frequency dividing circuit, frequency multiplier circuit, address production electric circuit is connected successively with wave memorizer, amplitude and side-play amount regulating circuit, wave memorizer all outputs signal to D/A modular converter, D/A modular converter outputs signal to respectively low-pass filter circuit, constant current source and Waveform generating circuit, low-pass filter circuit and Waveform generating circuit output signal to output and drive and holding circuit.
Further, described single-chip microcomputer adopts AT89C52 single-chip microcomputer.
Further, described serial line interface adopts RS-485 serial line interface.
Further, Waveform generating circuit comprises electronic counter, function memory and D/A, and electronic counter, function memory and D/A are connected successively.
The utility model beneficial effect is: simple in structure, easy to operate, waveform single-chip microcomputer being sent by data distributor, frequency data signal are assigned to corresponding circuit module, D/A modular converter is used for regulating amplitude and the side-play amount of synthetic waveform, can produce frequency, amplitude, multiple waveforms such as square wave, sine wave, triangular wave, trapezoidal wave, sawtooth wave and pulse signal that side-play amount is adjustable, floor area is little, and frequency stability is good, can be widely used in CAI and the laboratory of universities.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the utility model circuit theory diagrams.
Embodiment
A kind of multifunctional virtual waveform generator as shown in Figure 1, comprise single-chip microcomputer and the watchdog circuit being connected with single-chip microcomputer respectively, amplitude and side-play amount regulating circuit, data distributor, serial line interface and wave memorizer, data distributor outputs signal to respectively frequency dividing circuit, frequency multiplier circuit and address production electric circuit, crystal oscillating circuit, frequency dividing circuit, frequency multiplier circuit, address production electric circuit is connected successively with wave memorizer, amplitude and side-play amount regulating circuit, wave memorizer all outputs signal to D/A modular converter, D/A modular converter outputs signal to respectively low-pass filter circuit, constant current source and Waveform generating circuit, low-pass filter circuit and Waveform generating circuit output signal to output and drive and holding circuit.
Described single-chip microcomputer adopts AT89C52 single-chip microcomputer.
Described serial line interface adopts RS-485 serial line interface.
Described Waveform generating circuit comprises electronic counter, function memory and D/A, and electronic counter, function memory and D/A are connected successively.
The utility model is simple in structure, easy to operate, by serial line interface, be connected with PC computer, single-chip microcomputer receives the parameter signals such as waveform, frequency, amplitude, side-play amount, dutycycle of PC output by serial line interface, the waveform that data distributor sends single-chip microcomputer and frequency data signal are assigned to frequency dividing circuit, frequency multiplier circuit and address production electric circuit, to realize the waveform that output signal is carried out frequency adjustment and produced corresponding frequencies, then signal transmission is to wave memorizer, and then wave memorizer signal transmission is to D/A modular converter; Amplitude and side-play amount regulating circuit regulate amplitude output signal and side-play amount, and then the signal transmission after regulating is delivered to D/A modular converter; By D/A modular converter, convert analog output to low-pass filter circuit, constant current source and Waveform generating circuit; low-pass filter circuit and Waveform generating circuit output signal to output and drive and holding circuit; and then produce frequency, amplitude, multiple waveforms such as square wave, sine wave, triangular wave, trapezoidal wave, sawtooth wave and pulse signal that side-play amount is adjustable; floor area is little; and frequency stability is good, can be widely used in CAI and the laboratory of universities.
The above; be only embodiment of the present utility model, be not limited to this, be anyly familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model.
Claims (4)
1. a multifunctional virtual waveform generator, it is characterized in that: comprise single-chip microcomputer and the watchdog circuit being connected with single-chip microcomputer respectively, amplitude and side-play amount regulating circuit, data distributor, serial line interface and wave memorizer, described data distributor outputs signal to respectively frequency dividing circuit, frequency multiplier circuit and address production electric circuit, crystal oscillating circuit, frequency dividing circuit, frequency multiplier circuit, address production electric circuit is connected successively with wave memorizer, described amplitude and side-play amount regulating circuit, wave memorizer all outputs signal to D/A modular converter, described D/A modular converter outputs signal to respectively low-pass filter circuit, constant current source and Waveform generating circuit, described low-pass filter circuit and Waveform generating circuit output signal to output and drive and holding circuit.
2. multifunctional virtual waveform generator according to claim 1, is characterized in that: described single-chip microcomputer adopts AT89C52 single-chip microcomputer.
3. multifunctional virtual waveform generator according to claim 1, is characterized in that: described serial line interface adopts RS-485 serial line interface.
4. multifunctional virtual waveform generator according to claim 1, is characterized in that: described Waveform generating circuit comprises electronic counter, function memory and D/A, and described electronic counter, function memory and D/A are connected successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420497325.0U CN204009479U (en) | 2014-08-25 | 2014-08-25 | A kind of multifunctional virtual waveform generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420497325.0U CN204009479U (en) | 2014-08-25 | 2014-08-25 | A kind of multifunctional virtual waveform generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204009479U true CN204009479U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420497325.0U Expired - Fee Related CN204009479U (en) | 2014-08-25 | 2014-08-25 | A kind of multifunctional virtual waveform generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204009479U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949751A (en) * | 2015-06-17 | 2015-09-30 | 江苏大学 | Intelligent acoustic velocity measurement experimental device and acoustic velocity measurement method |
| CN117783614A (en) * | 2024-02-26 | 2024-03-29 | 北京励芯泰思特测试技术有限公司 | Alternating current signal generation and measurement system and method |
-
2014
- 2014-08-25 CN CN201420497325.0U patent/CN204009479U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949751A (en) * | 2015-06-17 | 2015-09-30 | 江苏大学 | Intelligent acoustic velocity measurement experimental device and acoustic velocity measurement method |
| CN117783614A (en) * | 2024-02-26 | 2024-03-29 | 北京励芯泰思特测试技术有限公司 | Alternating current signal generation and measurement system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150825 |
|
| EXPY | Termination of patent right or utility model |