CN208569449U - 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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- CN208569449U CN208569449U CN201821173107.6U CN201821173107U CN208569449U CN 208569449 U CN208569449 U CN 208569449U CN 201821173107 U CN201821173107 U CN 201821173107U CN 208569449 U CN208569449 U CN 208569449U
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Abstract
The utility model relates to a kind of program-controlled triangular wave generating system, including sequentially passing through the trigger of signal port connection, controller, digital analog converter and with the low-pass filter of signal output port, the controller connects signal and is connected with computer end；The controller includes phase accumulator and the single-chip microcontroller connecting with its signal, reference clock module, wave memorizer.The utility model controller is using single-chip microcontroller as control piece, eliminate the red programmable digital device bring of prior art problem at high cost, 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 setting reference clock module and phase accumulator, adds up to waveform, improve the stability of waveform.
Description
Technical field
The utility model relates to triangular wave generating systems, belong to electronic signal equipment technical field, more specifically, this reality
With novel, a kind of program-controlled triangular wave generating system is set.
Background technique
Triangular wave (Triangular Wave) is also referred to as sawtooth wave, refers to and is used primarily in the scanning circuit that CRT makees display device
In waveform.
Triangular wave is widely used in shock resistance design, radar range finding and other electronic equipments.Existing generation triangular wave
Triangle wave generating circuit be divided into simulation and mini-system that numeric class device is built.For simulating class system, adopt
Device is numerous and jumbled, it has not been convenient to which debugging when using is arranged and be easy to cause the waveform of triangular wave unstable；For numeric class system
For system, using programmable digital device, causes at high cost, in addition need individually to increase telecommunication circuit in use, lead
It causes inconvenient for use.
In the patent No. 201510975561.8, the patent text of entitled " triangular-wave generator and triangular wave generate system "
In part, a kind of triangular wave generation system is disclosed comprising detection module, control module further include triangular wave hair that it is recorded
Raw device, for which solve phase error, improving the steady of system as main triangular-wave generator and from triangular-wave generator
It is qualitative, but its generator architecture is complicated, and it is extremely inconvenient to use and debug, and cannot achieve low cost and easy-to-use purpose.And
The patent No. 201521029046.2, entitled " triangular wave generating system " patent document in, disclose a kind of triangular wave hair
Raw system comprising comparator, phase inverter, integrator, adder and MCU, five digital regulation resistances of MCU connection, the patent are logical
Accurate control triangle wave period and amplitude can be programmed by MCU by crossing the above design, allow frequency modulation deviation and modulation period side
Just flexible independent modulation, to obtain high-precision triangular wave, but the system output wave is not sufficiently stable, and excessive due to having added
Electrical part so that its structure is complicated, MCU programming operation and using also extremely inconvenient.
Utility model content
Based on the above technical problem, the utility model provides a kind of program-controlled triangular wave generating system, to solve existing
Having technology intermediate cam wave generating system, structure is complicated, debugging and technology inconvenient for use, at high cost and that driving waveform is unstable are asked
Topic.
The technical solution adopted in the utility model is as follows:
A kind of program-controlled triangular wave generating system, trigger, controller, digital-to-analogue including sequentially passing through signal port connection turn
Parallel operation and low-pass filter with signal output port, the controller connect signal and are connected with computer end；
Wherein,
The controller includes that phase accumulator and the single-chip microcontroller connecting with its signal, reference clock module, waveform are deposited
Reservoir.
Based on system above, the phase accumulator further includes the N bit accumulator and N-bit register of signal connection each other,
The N bit accumulator is connect with the single-chip microcontroller and reference clock module, and the N-bit register and the wave memorizer connect
It connects.
Based on system above, the controller is provided with USB interface, and is connect by USB interface with computer end.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
The utility model controller, as control piece, eliminates the red programmable digital device band of the prior art using single-chip microcontroller
The problem at high cost come realizes the low cost of system, and the frequency and amplitude of triangular wave are controlled by trigger, makes triangle
Wave generating system can be debugged more easily；Simultaneously by setting reference clock module and phase accumulator, waveform is carried out tired
Add, improves the stability of waveform.
Detailed description of the invention
Fig. 1 is the structural block diagram of the utility model；
Fig. 2 is the structural block diagram of the utility model controller.
Specific embodiment
All features disclosed in this specification can be with any other than mutually exclusive feature and/or step
Mode combines.
It elaborates below with reference to embodiment to the utility model.
As shown in Figure 1 and Figure 2, a kind of program-controlled triangular wave generating system, the triggering including sequentially passing through signal port connection
Device, controller, digital analog converter and the low-pass filter with signal output port, the controller connect signal and are connected with computer
End；The controller includes phase accumulator and the single-chip microcontroller connecting with its signal, reference clock module, wave memorizer；
The phase accumulator further includes the N bit accumulator and N-bit register of signal connection each other, the N bit accumulator and the list
Piece machine is connected with reference clock module, and the N-bit register is connect with the wave memorizer；The controller is provided with USB
Interface, and connect by USB interface with computer end.
Based on above technical scheme, voltage signal is passed to controller by trigger by the present embodiment, or passes through computer end
Voltage signal is passed to controller, immediately single-chip microcontroller and the work of reference clock module drive phase accumulator, in phase accumulator
The signal that is issued according to single-chip microcontroller and reference clock module of N bit accumulator, the value that single-chip microcontroller exports is added up, and by phase
In result input N-bit register after adding, the data that N-bit register generates when then acting on reference clock module are transported to waveform
In memory, the value that can ceaselessly issue to single-chip microcontroller under the action of reference clock module adds up, meanwhile, it is phase-accumulated
Device output data as address there are in Waveform storage by searching for amplitude table corresponding to address, so that it may complete device from phase
Position is to the conversion between amplitude, since the frequency of triangular wave is determined by single-chip microcontroller and reference clock module, triangle
The frequency or waveform of wave are owned by high stability.
The present embodiment is connect with computer end by USB interface, and generate triangular wave reduces with the cost of control.
In the present embodiment, user can be configured the frequency and amplitude for exporting triangular wave by computer end, be made
The frequency and amplitude of the system are exported automatically, can also issue the frequency and width that trigger signal controls triangular wave by trigger
Degree controlled, have the characteristics that debugging with it is easy to use.
It is as described above the embodiments of the present invention.The utility model is not limited to above embodiment, anyone
It should learn the structure change made under the enlightenment of the utility model, it is all that there is same or similar skill with the utility model
Art scheme, each falls within the protection scope of the utility model.
Claims (3)
1. a kind of program-controlled triangular wave generating system, it is characterised in that: trigger, control including sequentially passing through signal port connection
Device, digital analog converter and the low-pass filter with signal output port, the controller connect signal and are connected with computer end；
Wherein,
The controller includes phase accumulator and the single-chip microcontroller connecting with its signal, reference clock module, wave memorizer.
2. a kind of program-controlled triangular wave generating system according to claim 1, it is characterised in that: the phase accumulator also wraps
Include the N bit accumulator and N-bit register of signal connection each other, the N bit accumulator and the single-chip microcontroller and reference clock module
Connection, the N-bit register are connect with the wave memorizer.
3. a kind of program-controlled triangular wave generating system according to claim 1, it is characterised in that: the controller is provided with
USB interface, and connect by USB interface with computer end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821173107.6U CN208569449U (en) | 2018-07-24 | 2018-07-24 | A kind of program-controlled triangular wave generating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821173107.6U CN208569449U (en) | 2018-07-24 | 2018-07-24 | A kind of program-controlled triangular wave generating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208569449U true CN208569449U (en) | 2019-03-01 |
Family
ID=65447517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821173107.6U Active CN208569449U (en) | 2018-07-24 | 2018-07-24 | A kind of program-controlled triangular wave generating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208569449U (en) |
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2018
- 2018-07-24 CN CN201821173107.6U patent/CN208569449U/en active Active
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