CN108646851A - A kind of program-controlled triangular wave generating system - Google Patents
A kind of program-controlled triangular wave generating system Download PDFInfo
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- CN108646851A CN108646851A CN201810817405.2A CN201810817405A CN108646851A CN 108646851 A CN108646851 A CN 108646851A CN 201810817405 A CN201810817405 A CN 201810817405A CN 108646851 A CN108646851 A CN 108646851A
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- controller
- triangular wave
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- reference clock
- clock module
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- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/02—Digital function generators
- G06F1/03—Digital function generators working, at least partly, by table look-up
- G06F1/0321—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers
- G06F1/0328—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers in which the phase increment is adjustable, e.g. by using an adder-accumulator
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2101/00—Indexing scheme relating to the type of digital function generated
- G06F2101/04—Trigonometric functions
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Programmable Controllers (AREA)
Abstract
The present invention relates to a kind of program-controlled triangular wave generating systems, including sequentially pass through trigger, controller, digital analog converter and the low-pass filter with signal output port of signal port connection, and the controller connects signal and is connected with computer end；The controller includes phase accumulator and the microcontroller being connect with its signal, reference clock module, wave memorizer.Controller of the present invention is using microcontroller as control piece, eliminate the problem of high cost that the red programmable digital device of the prior art is brought, the low cost of system is realized, and controls the frequency and amplitude of triangular wave by trigger, triangular wave generating system is enable more easily to debug；Simultaneously by the way that reference clock module and phase accumulator is arranged, adds up to waveform, improve the stability of waveform.
Description
Technical Field
The invention relates to a triangular wave generating system, belongs to the technical field of electronic signal equipment, and particularly relates to a program-controlled triangular wave generating system.
Background
Triangular Wave (also called sawtooth Wave) is a waveform mainly used in a scanning circuit of a CRT display device.
Triangular waves are widely used in impact resistant designs, radar ranging, and other electronic devices. The existing triangular wave generating circuit for generating triangular waves is a small system which is built by analog and digital devices. For analog systems, the adopted devices are numerous and complicated, so that the debugging setting is inconvenient in use, and the waveform of a triangular wave is easy to be unstable; for digital systems, programmable digital devices are used, which results in high cost, and in addition, a communication circuit is required to be added separately in the use process, which results in inconvenient use.
In patent No. 201510975561.8, entitled "triangle wave generator and triangle wave generating system", a triangle wave generating system is disclosed, which includes a detecting module, a control module, and a triangle wave generator recorded therein, and is used as a master triangle wave generator and a slave triangle wave generator, which solves the phase error and improves the stability of the system, but the generator has a complex structure, is very inconvenient to use and debug, and cannot achieve the purposes of low cost and convenient use. And in patent No. 201521029046.2, the title is "triangular wave generating system", disclose a triangular wave generating system, it includes comparator, inverter, integrator, adder and MCU, MCU connects five digital potentiometers, this patent can program accurate control triangular wave cycle and amplitude through MCU above-mentioned design, make frequency modulation frequency deviation and modulation cycle can make the independent modulation of the flexibility convenient, thus get the triangular wave of the high accuracy, but the output wave of this system is not stable enough, and because of having added too many electrical parts, make its structure complicated, MCU programming operation and use are also very inconvenient.
Disclosure of Invention
Based on the technical problems, the invention provides a program-controlled triangular wave generating system, thereby solving the technical problems of complex structure, inconvenient debugging and use, high cost and unstable traveling waveform of the triangular wave generating system in the prior art.
The technical scheme adopted by the invention is as follows:
a program-controlled triangular wave generating system comprises a trigger, a controller, a digital-to-analog converter and a low-pass filter with a signal output port, wherein the trigger, the controller, the digital-to-analog converter and the low-pass filter are sequentially connected through a signal port;
wherein,
the controller comprises a phase accumulator, a single chip microcomputer, a reference clock module and a waveform memory, wherein the single chip microcomputer, the reference clock module and the waveform memory are in signal connection with the phase accumulator.
Based on the system, the phase accumulator further comprises an N-bit accumulator and an N-bit register, wherein the N-bit accumulator and the N-bit register are in signal connection with each other, the N-bit accumulator is connected with the single chip microcomputer and the reference clock module, and the N-bit register is connected with the waveform memory.
Based on the system, the controller is provided with a USB interface and is connected with the computer end through the USB interface.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the controller of the invention adopts the single chip microcomputer as a control element, thus avoiding the problem of high cost caused by a red programmable digital device in the prior art, realizing low cost of the system, and controlling the frequency and amplitude of the triangular wave through the trigger, so that the triangular wave generating system can be more conveniently debugged; meanwhile, the waveform is accumulated by arranging the reference clock module and the phase accumulator, so that the stability of the waveform is improved.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a block diagram of the controller according to the present invention.
Detailed Description
All features disclosed in this specification may be combined in any combination, except features and/or steps that are mutually exclusive.
The present invention will be described in detail with reference to examples.
As shown in fig. 1 and 2, a program-controlled triangle wave generating system includes a trigger, a controller, a digital-to-analog converter and a low-pass filter with a signal output port, which are connected in sequence through a signal port, wherein the controller is connected with a computer end through a signal; the controller comprises a phase accumulator, a singlechip, a reference clock module and a waveform memory, wherein the singlechip, the reference clock module and the waveform memory are in signal connection with the phase accumulator; the phase accumulator also comprises an N-bit accumulator and an N-bit register which are in signal connection with each other, the N-bit accumulator is connected with the single chip microcomputer and the reference clock module, and the N-bit register is connected with the waveform memory; the controller is provided with a USB interface and is connected with the computer end through the USB interface.
Based on the technical scheme, the embodiment transmits a voltage signal into the controller through the trigger or transmits the voltage signal into the controller through the computer end, the single chip microcomputer and the reference clock module drive the phase accumulator to work, the N-bit accumulator in the phase accumulator accumulates the value output by the single chip microcomputer according to the signals sent by the single chip microcomputer and the reference clock module and inputs the added result into the N-bit register, the N-bit register transmits the data generated when the reference clock module acts to the waveform memory, the value sent by the single chip microcomputer can be accumulated continuously under the action of the reference clock module, meanwhile, the data output by the phase accumulator is stored as an address in the waveform memory, and the conversion from the phase to the amplitude of the device can be completed by searching the amplitude table corresponding to the address, because the frequency of the triangular wave is determined by the single chip microcomputer and the reference clock module, therefore, the frequency or waveform of the triangular wave has extremely high stability.
The embodiment is connected with the computer end through the USB interface, so that the cost of generating and controlling the triangular wave is reduced.
In this embodiment, the user can set the frequency and amplitude of the output triangular wave through the computer end, so that the frequency and amplitude of the system can be automatically output, and the trigger can also send out the trigger signal to control the frequency and amplitude of the triangular wave, so that the system has the characteristics of convenience in debugging and use.
The above description is an embodiment of the present invention. The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the protection scope of the present invention, which is similar or similar to the technical solutions of the present invention.
Claims (3)
1. A program-controlled triangular wave generating system is characterized in that: the digital-to-analog converter comprises a trigger, a controller, a digital-to-analog converter and a low-pass filter with a signal output port, which are sequentially connected through a signal port, wherein the controller is connected with a computer end through a signal;
the controller comprises a phase accumulator, a single chip microcomputer, a reference clock module and a waveform memory, wherein the single chip microcomputer, the reference clock module and the waveform memory are in signal connection with the phase accumulator.
2. The programmable triangle wave generation system of claim 1, wherein: the phase accumulator further comprises an N-bit accumulator and an N-bit register, wherein the N-bit accumulator and the N-bit register are in signal connection with each other, the N-bit accumulator is connected with the single chip microcomputer and the reference clock module, and the N-bit register is connected with the waveform memory.
3. The programmable triangle wave generation system of claim 1, wherein: the controller is provided with a USB interface and is connected with the computer end through the USB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810817405.2A CN108646851A (en) | 2018-07-24 | 2018-07-24 | A kind of program-controlled triangular wave generating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810817405.2A CN108646851A (en) | 2018-07-24 | 2018-07-24 | A kind of program-controlled triangular wave generating system |
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| Publication Number | Publication Date |
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| CN108646851A true CN108646851A (en) | 2018-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810817405.2A Pending CN108646851A (en) | 2018-07-24 | 2018-07-24 | A kind of program-controlled triangular wave generating system |
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| CN (1) | CN108646851A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115664388A (en) * | 2022-12-26 | 2023-01-31 | 成都信息工程大学 | Triangular wave generating circuit for delta-sigma fractional frequency division phase-locked loop |
| WO2024140240A1 (en) * | 2022-12-30 | 2024-07-04 | 本源量子计算科技（合肥）股份有限公司 | Signal generation device, quantum control system, and quantum computer |
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| CN101867366A (en) * | 2010-07-02 | 2010-10-20 | 北京联合大学生物化学工程学院 | Triangular wave generator with variable frequency and amplitude |
| CN201726375U (en) * | 2010-06-29 | 2011-01-26 | 重庆医科大学 | Open type multifunctional medical signal generator based on LPC2144 (Linear Predictive Code) |
| CN201892695U (en) * | 2010-12-08 | 2011-07-06 | 荣信电力电子股份有限公司 | Multifunctional signal generator |
| CN205121246U (en) * | 2015-09-21 | 2016-03-30 | 北京航天光华电子技术有限公司 | FPGA -based DDS signal generator |
| US20160099719A1 (en) * | 2014-10-03 | 2016-04-07 | Ricoh Company, Ltd. | Spread spectrum clock generator, electronic apparatus, and spread spectrum clock generation method |
-
2018
- 2018-07-24 CN CN201810817405.2A patent/CN108646851A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201726375U (en) * | 2010-06-29 | 2011-01-26 | 重庆医科大学 | Open type multifunctional medical signal generator based on LPC2144 (Linear Predictive Code) |
| CN101867366A (en) * | 2010-07-02 | 2010-10-20 | 北京联合大学生物化学工程学院 | Triangular wave generator with variable frequency and amplitude |
| CN201892695U (en) * | 2010-12-08 | 2011-07-06 | 荣信电力电子股份有限公司 | Multifunctional signal generator |
| US20160099719A1 (en) * | 2014-10-03 | 2016-04-07 | Ricoh Company, Ltd. | Spread spectrum clock generator, electronic apparatus, and spread spectrum clock generation method |
| CN205121246U (en) * | 2015-09-21 | 2016-03-30 | 北京航天光华电子技术有限公司 | FPGA -based DDS signal generator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115664388A (en) * | 2022-12-26 | 2023-01-31 | 成都信息工程大学 | Triangular wave generating circuit for delta-sigma fractional frequency division phase-locked loop |
| CN115664388B (en) * | 2022-12-26 | 2023-03-28 | 成都信息工程大学 | Triangular wave generating circuit for delta-sigma fractional frequency division phase-locked loop |
| WO2024140240A1 (en) * | 2022-12-30 | 2024-07-04 | 本源量子计算科技（合肥）股份有限公司 | Signal generation device, quantum control system, and quantum computer |
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Application publication date: 20181012 |
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