CN205720332U

CN205720332U - A kind of multifunction programable signal generator

Info

Publication number: CN205720332U
Application number: CN201620329244.9U
Authority: CN
Inventors: 罗建国; 胡兴志; 李学哲; 张洪斌; 韩红利; 刘少海; 张伟杰
Original assignee: North China Institute of Science and Technology
Current assignee: North China Institute of Science and Technology
Priority date: 2016-04-19
Filing date: 2016-04-19
Publication date: 2016-11-23
Anticipated expiration: 2026-04-19

Abstract

This utility model provides a kind of multifunction programable signal generator, relate to signal generator field, including supply module, microprocessor, DDS waveform generating module, DC voltage generation module, amplitude adjusted module, relay output module, display module, key-press module and communication module, microprocessor connects supply module respectively, DDS waveform generating module, DC voltage generation module, amplitude adjusted module, relay output module, display module, key-press module and communication module, DDS waveform generating module connects DC voltage generation module, DC voltage generation module connects amplitude adjusted module, amplitude adjusted module connects relay output module；This utility model has the multi-signal generating functions such as sine wave, square wave, triangular wave, DC voltage, has manual and program control two kinds of mode of operations simultaneously, can be realized the program control output of host computer by RS232 communication interface；Native system has the advantages such as signal accuracy is high, scope is wide, volume is little, flexible.

Description

A kind of multifunction programable signal generator

Technical field

This utility model relates to signal generator field, is specifically related to a kind of multifunction programable letter Number generator.

Background technology

The occasions such as modern scientific research, communication system, teaching test and various electronic measurement techniques need Wanting high accuracy, programmed signal source, high-precision signal source is to scientific research, communication system, electronics pair Anti-and various electronic surveying tools are of great significance.Along with the fast development of digital technology, Singlechip technology and direct digital frequency synthesis technology (DDS) have been successfully applied to high accuracy to be believed Among the design of number generator；Signal generator is as a kind of conventional signal source, and it is a kind of The equipment of signal is provided for electronic surveying and gage work, is to be most widely used in modern testing field One of all purpose instrument.The same with instruments such as oscillograph, voltmeter, enumerators is most widely used general Electronic machine, it can produce multiple waveforms signal, such as sine wave, triangular wave, square wave etc., Thus it is widely used in the fields such as communication, radar, navigation, aerospace, almost all of electric parameter Measurement is required for signal generator.In various test application and experimental test process, signal is sent out Raw device, according to the requirement of user, as driving source, emulates various test signal, it is provided that to quilt Slowdown monitoring circuit, with satisfied measurement or various be actually needed.

The file of Patent No. CN202196100U discloses a kind of signal generator, including Power module, program controling module and analog waveform module, the outfan of described power module Connect and have for ensureing the protection module that signal generator normally works, described program controling module Be connected to protect between module and analog waveform module, and program controling module respectively with display mould Block, program storage module and input module connect, and analog waveform module is with waveform output module even Connect；These device lattice are expensive, utilization rate is low, and control mode is single, does not possess programmable interface, because of This is unfavorable for the integrated of system and extension.

Utility model content

For the deficiencies in the prior art, this utility model provides a kind of multifunction programable signal Generator so that signal accuracy is high, scope is wide, volume is little, flexible, can be with program control defeated Go out.

For realizing object above, this utility model is achieved by the following technical programs: a kind of Multifunction programable signal generator, occurs including supply module, microprocessor, DDS waveform Module, DC voltage generation module, amplitude adjusted module, relay output module, display mould Block, key-press module and communication module, described microprocessor connects supply module, DDS ripple respectively Shape generation module, DC voltage generation module, amplitude adjusted module, relay output module, Display module, key-press module and communication module, described DDS waveform generating module connects unidirectional current The raw module of Hair Fixer, described DC voltage generation module connects amplitude adjusted module, and described amplitude is adjusted Joint module connects relay output module.

Preferably, described display module is LCDs LCD1602.

Preferably, described communication module connects computer by RS232 interface.

Preferably, described DDS waveform generating module includes chip AD9833 and amplifies adjustment Circuit.

Preferably, described DC voltage generation module includes MAX351.

Preferably, described amplitude adjusted module includes chip AD7545.

This utility model provides a kind of multifunction programable signal generator, have sine wave, The multi-signal generating functions such as square wave, triangular wave, DC voltage, have manual and program control simultaneously Two kinds of mode of operations, can realize the program control output of host computer by RS232 communication interface；This System has the advantages such as signal accuracy is high, scope is wide, volume is little, flexible.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, The accompanying drawing used required in embodiment or description of the prior art will be briefly described below, It should be evident that the accompanying drawing in describing below is only embodiments more of the present utility model, right From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to Other accompanying drawing is obtained according to these accompanying drawings.

Fig. 1 is theory diagram of the present utility model.

Detailed description of the invention

For making the purpose of this utility model embodiment, technical scheme and advantage clearer, below The accompanying drawing in this utility model embodiment will be combined, to the technical side in this utility model embodiment Case is clearly and completely described, it is clear that described embodiment is this utility model one Divide embodiment rather than whole embodiments.Based on the embodiment in this utility model, ability The every other enforcement that territory those of ordinary skill is obtained under not making creative work premise Example, broadly falls into the scope of this utility model protection.

Embodiment:

As it is shown in figure 1, a kind of multifunction programable signal generator, including supply module, micro- Processor, DDS waveform generating module, DC voltage generation module, amplitude adjusted module, continue Electrical equipment output module, display module, key-press module and communication module, described microprocessor is respectively Connect supply module, DDS waveform generating module, DC voltage generation module, amplitude adjusted mould Block, relay output module, display module, key-press module and communication module, described DDS ripple Shape generation module connects DC voltage generation module, and described DC voltage generation module connects amplitude Adjustment module, described amplitude adjusted module connects relay output module；Described display module is LCDs LCD1602；Described communication module connects computer by RS232 interface；Institute State DDS waveform generating module include chip AD9833 and amplify adjustment circuit；Described direct current Voltage generation module includes MAX351；Described amplitude adjusted module includes chip AD7545.

DDS waveform generating module is to the generation of the multiple waveforms such as sine, triangular wave and output, high Speed is sampled and ensures that good waveform quality is the key that whole system realizes, in the entire system, Need the various control words of DDS to be calculated, signal is carried out the amplification of amplitude or decay, Changing skew of signal etc., these work all will be completed by Single Chip Microcomputer (SCM) system；This device is real Existing keyboard reads in, LCD shows, AD9833 programs, signal amplitude adjusts and host computer leads to The several functions such as news, also design have RS232 interface, and user-programmable arranges the signal of DDS Type, output frequency, initial phase, peak-to-peak value etc., these configuration informations are connect by RS232 Mouth is uploaded to microprocessor, and microprocessor arranges DDS according to output frequency, initial phase；This Device has the multi-signal generating functions such as sine wave, square wave, triangular wave, DC voltage, with Time there are manual and program control two kinds of mode of operations, can be realized upper by RS232 communication interface The program control output of machine；Native system has that signal accuracy is high, scope is wide, volume is little, flexible Etc. advantage.

Above example only in order to the technical solution of the utility model to be described, is not intended to limit； Although this utility model being described in detail with reference to previous embodiment, this area common Skilled artisans appreciate that the technical scheme described in foregoing embodiments still can be entered by it Row amendment, or wherein portion of techniques feature is carried out equivalent；And these are revised or replace Change, do not make the essence of appropriate technical solution depart from this utility model each embodiment technical scheme Spirit and scope.

Claims

1. a multifunction programable signal generator, it is characterised in that include supply module, Microprocessor, DDS waveform generating module, DC voltage generation module, amplitude adjusted module, Relay output module, display module, key-press module and communication module, described microprocessor divides Do not connect supply module, DDS waveform generating module, DC voltage generation module, amplitude adjusted Module, relay output module, display module, key-press module and communication module, described DDS Waveform generating module connects DC voltage generation module, and described DC voltage generation module connects width Degree adjustment module, described amplitude adjusted module connects relay output module.

2. multifunction programable signal generator as claimed in claim 1, it is characterised in that Described display module is LCDs LCD1602.

3. multifunction programable signal generator as claimed in claim 1, it is characterised in that Described communication module connects computer by RS232 interface.

4. multifunction programable signal generator as claimed in claim 1, it is characterised in that Described DDS waveform generating module includes chip AD9833 and amplifies adjustment circuit.

5. multifunction programable signal generator as claimed in claim 1, it is characterised in that Described DC voltage generation module includes MAX351.

6. multifunction programable signal generator as claimed in claim 1, it is characterised in that Described amplitude adjusted module includes chip AD7545.