CN108427026A - A kind of universal signal waveform acquisition equipment - Google Patents
A kind of universal signal waveform acquisition equipment Download PDFInfo
- Publication number
- CN108427026A CN108427026A CN201810242248.7A CN201810242248A CN108427026A CN 108427026 A CN108427026 A CN 108427026A CN 201810242248 A CN201810242248 A CN 201810242248A CN 108427026 A CN108427026 A CN 108427026A
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- China
- Prior art keywords
- signal
- circuit
- waveform acquisition
- acquisition
- connector
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
- G01R13/0209—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form in numerical form
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
- G01R13/0218—Circuits therefor
Abstract
The present invention relates to a kind of universal signal waveform acquisition equipment, including：Connector couples with the connector on tested measurement equipment, the data being used for transmission on tested measurement equipment；Inverse problem circuit is made of multiple relays, and Inverse problem circuit realizes gating and the switching of each channel data bus by receiving the control signal sent from processor；AD Acquisition Circuit carries out waveform acquisition to the data of connector output, forms waveform acquisition signal；Processor receives and processes waveform acquisition signal, and signal is exported to display by treated；Display, for real-time display processor treated waveform signal；Power circuit is powered for whole equipment.The present invention realizes the real-time waveform acquisition of a variety of digital signals and analog signal, with highly practical, easy to operate, the reliability of product is high, and acquisition precision is high, environmental suitability is strong, anti-interference ability is good, reasonable for structure, high degree of automation, steady performance.
Description
Technical field
The invention belongs to waveform signals to acquire field, and in particular to a kind of universal signal waveform acquisition equipment.
Background technology
Traditional waveform acquisition equipment is usually made of signal conditioning circuit, high-speed AD acquisition circuit, acquisition probe.Tradition
Technology have the following disadvantages：
1, the usual shell of large scale electronic equipment is inconvenient to open, and internal structure is complicated, and connector interface stitch is intensive, tradition
Waveform acquisition equipment acquisition probe can not directly acquire measured signal external, in addition the acquisition probe of traditional Waveshape Collecting System
It is smaller, maloperation is easy when acquiring signal at connector interface, therefore traditional waveform collecting device can not be set suitable for special type
The problem of for when breaking down, positions；
2, traditional waveform collecting device is only capable of realizing that high-voltage signal is converted into low-voltage signal by signal conditioning circuit, and to signal
Shaping is carried out, when measured object internal fault, measured signal is likely to occur the abnormal conditions such as overcurrent, overvoltage, can be to waveform acquisition
Equipment internal circuit damages；
3, when measured signal is more, traditional Waveshape Collecting System can only one by one be measured by manually, cumbersome, and
When tested object is complicated, manual operation has some potential safety problems.
Invention content
In order to solve measured signal it is more when, traditional Waveshape Collecting System can only one by one be measured by manually, operation
Cumbersome problem, the present invention provides a kind of universal signal waveform acquisition equipment.The technical problem to be solved in the present invention by with
Lower technical solution is realized：
A kind of universal signal waveform acquisition equipment, including：
Connector couples with the connector on tested measurement equipment, the data being used for transmission on tested measurement equipment；
Inverse problem circuit is made of multiple relays, and the Inverse problem circuit is by receiving the control sent from processor
Signal processed realizes gating and the switching of each channel data bus；
AD Acquisition Circuit carries out waveform acquisition to the data of connector output, forms waveform acquisition signal, and by the waveform acquisition
Signal is exported to processor；
Processor receives and processes waveform acquisition signal, and signal is exported to display by treated；
Display, for real-time display processor treated waveform signal；
Power circuit is powered for whole equipment
A kind of above-mentioned universal signal waveform acquisition equipment, isolation circuit is additionally provided between the connector and AD Acquisition Circuit,
The isolation circuit is isolated for realizing data/address bus and tested measurement equipment, abnormal to prevent measured signal from occurring, to waveform
Signal collecting device damages.
A kind of above-mentioned universal signal waveform acquisition equipment, the output end of the connector are also connected with serial port control circuit
Input terminal, the input terminal of the output end connection processing device of serial port control circuit, the serial port control circuit be used for host computer into
Row communication, and receive the control instruction of host computer transmission.
A kind of above-mentioned universal signal waveform acquisition equipment, the processor are embeded processor.
A kind of above-mentioned universal signal waveform acquisition equipment, the isolation circuit include isolated amplifier and filtered electrical
Road, the output end of the isolated amplifier and the input terminal of filter circuit connect.
A kind of above-mentioned universal signal waveform acquisition equipment, the relay are the c-type relay of single-pole double throw, the c-type
The control terminal of relay is connect with processor, and the common end of the c-type relay is connect with AD Acquisition Circuit, the c-type relay
The normally open end of device is connected with each measured signal pin of connector, and the normal-closed end of the c-type relay is hanging
Beneficial effects of the present invention：
The present invention realizes the real-time waveform acquisition of a variety of digital signals and analog signal, has highly practical, easy to operate, production
The reliability of product is high, and acquisition precision is high, environmental suitability is strong, anti-interference ability is good, reasonable for structure, high degree of automation, performance
The advantages that stablizing.
The present invention is described in further details below with reference to accompanying drawings and embodiments.
Description of the drawings
Fig. 1 is the composition frame chart of universal signal waveform acquisition equipment.
Fig. 2 is the schematic diagram of Inverse problem circuit.
Fig. 3 is the schematic diagram of high-speed AD acquisition circuit.
Fig. 4 is the data processing circuit schematic diagram of microcontroller.
Fig. 5 is the circuit diagram of serial data bus.
Fig. 6 is the composition frame chart of waveform signal collecting device.
Specific implementation mode
Reach the technological means and effect that predetermined purpose is taken for the present invention is further explained, below in conjunction with attached drawing and reality
Example is applied to specific implementation mode, structure feature and its effect of the present invention, detailed description are as follows.
Embodiment 1：
In order to solve the problems, such as traditional waveform collecting device acquisition probe can not in external directly acquisition measured signal, with reference to Fig. 6,
Present embodiment discloses a kind of waveform signal collecting devices, including：
Connector couples with the connector on tested measurement equipment, the data being used for transmission on tested measurement equipment；
Isolation circuit, it is abnormal to prevent measured signal from occurring for realizing being isolated for data/address bus and tested measurement equipment, to waveform
Signal collecting device damages；
AD Acquisition Circuit carries out waveform acquisition to the data of connector output, forms waveform acquisition signal, and by the waveform acquisition
Signal is exported to processor；
Processor receives and processes waveform acquisition signal, and signal is exported to display by treated；
Display, for real-time display processor treated waveform signal；
Power circuit is powered for whole equipment.
With reference to Fig. 6, the connector of the present embodiment is electrically connected with the connector on tested measurement equipment, and the output end of connector connects
Connect the input terminal of isolation circuit, the input terminal of the output end connection AD Acquisition Circuit of isolation circuit, the output end of AD Acquisition Circuit
The input terminal of connection processing device, the input terminal of the output end connection display of processor, output end and the AD of power circuit are acquired
The power end electrical connection of circuit, processor, display.
As shown in figure 5, the isolation circuit of the present embodiment is made of isolated amplifier and filter circuit, wherein connector
Output end and the input terminal of isolated amplifier connect, the input terminal of the output end of isolated amplifier and filter circuit connects, filter
The output end of wave circuit and the input terminal of AD Acquisition Circuit connect.
In the present embodiment, there is no direct circuit coupling between the input of isolated amplifier signal, signal output and power circuit
It closes, i.e., signal does not have public ground terminal in transmission process, and isolation level is high and leakage current is small, by Devices to test and test
Equipment is isolated, and is played an important role to protection test equipment.Filter circuit filtered out the burr that mixes in measured signal and
Clutter ensure that the accurate of waveform acquisition result.In addition, isolated amplifier has been internally integrated isolated power supply, eliminate it is external every
From power supply, circuit cost is reduced.
The present embodiment can be attached by the cable and being devices under of transferring, and avoid traditional Waveshape Collecting System use
Acquisition probe acquired at tested object connector interface it is inconvenient for operation when signal, be easy maloperation the problem of.
Embodiment 2：
In order to solve measured signal it is more when, traditional Waveshape Collecting System can only one by one be measured by manually, cumbersome
The problem of, as shown in Figure 1, present embodiment discloses a kind of universal signal waveform acquisition equipment, which sets
For by serial port control circuit, embeded processor circuit, Inverse problem circuit, isolation circuit, high-speed AD acquisition circuit, connection
Device, power circuit, display composition；
Wherein：
Serial port control circuit：It is communicated with host computer, receives the control instruction from host computer, can receive the control of host computer
The function that multichannel automatically switches acquisition is completed in instruction；
Inverse problem circuit：By receiving the control signal sent from embeded processor, each channel data bus is realized
Gating and switching；
Isolation circuit：It realizes that data/address bus is isolated with measured object, prevents measured object bus from breaking down, to universal signal wave
Shape collecting device damages；
High-speed AD acquisition circuit：It realizes that data/address bus waveform acquires in real time, supports that a variety of sample modes, maximum sampling rate are
60MSPS；
Connector：It is attached for the connector with measured object；
Power circuit：For system power supply；
Display：For bus waveform real-time display.
As shown in Figure 2 and Figure 3, Inverse problem circuit is made of multiple relays, relay select single-pole double throw c-type after
Electric appliance, between relay independently of each other, the control terminal of relay connect with embeded processor, and common end and high-speed AD acquisition are electric
Road connects, and normally open end is connected with each measured signal pin of connector, and relay normal-closed end is hanging.Embeded processor passes through control
The turn-on and turn-off of c-type relay realize gating and the switching of signal, after embeded processor sends out instruction, corresponding relay
Common end be connected with normally open end, the same time only there are one relay be connected.
As shown in figure 4, serial port control circuit and sends an instruction to insertion by receiving the control instruction from host computer
Formula processor；Processor parses instruction, sends switching command to Inverse problem circuit；Inverse problem circuit is according to switching
Instruction, by specified signal gating, is sent to high-speed AD acquisition circuit；High-speed AD acquisition circuit carries out waveform acquisition to signal,
Collection result is sent to embeded processor；Embeded processor is handled and is analyzed to waveform acquisition result, and by wave
Shape is shown in display.
As shown in figure 5, isolation circuit is made of isolated amplifier and filter circuit, isolated amplifier signal inputs, is defeated
Go out not having between power circuit direct circuit coupling, i.e. signal there is no public ground terminal, isolation level in transmission process
High and leakage current is small, and Devices to test is isolated with test equipment, plays an important role to protection test equipment.Filtered electrical
Road has filtered out the burr and clutter mixed in measured signal, ensure that the accurate of waveform acquisition result.In addition, in isolated amplifier
Portion is integrated with isolated power supply, eliminates external isolated power supply, reduces circuit cost.
The present embodiment devises serial port control circuit and Inverse problem circuit, when in this way measuring more measured signals, from
The dynamic gating for completing measured signal and switching, solve measured signal it is more when, traditional waveform collecting device acquisition is cumbersome, and
There is the problem of certain security risk；
In order to effectively prevent the more waveform acquisition equipment of the abnormal conditions such as measured signal overcurrent, overvoltage from damaging, the present invention is set
Isolated amplifier circuit has been counted, effectively waveform acquisition equipment and tested object have been isolated, has been amplified additionally by isolation
Device circuit design filter circuit realizes pure hardware filtering, hardware algorithm, and speed is high, adaptable；
The present embodiment can be attached by cable of transferring with tested object, avoided traditional Waveshape Collecting System and visited using acquisition
The problem of head is inconvenient for operation when acquisition signal at tested object connector interface, easy maloperation.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
The specific implementation of the present invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention's
Protection domain.
Claims (6)
1. a kind of universal signal waveform acquisition equipment, which is characterized in that including：
Connector couples with the connector on tested measurement equipment, the data being used for transmission on tested measurement equipment；
Inverse problem circuit is made of multiple relays, and the Inverse problem circuit is by receiving the control sent from processor
Signal processed realizes gating and the switching of each channel data bus；
AD Acquisition Circuit carries out waveform acquisition to the data of connector output, forms waveform acquisition signal, and by the waveform acquisition
Signal is exported to processor；
Processor receives and processes waveform acquisition signal, and signal is exported to display by treated；
Display, for real-time display processor treated waveform signal；
Power circuit is powered for whole equipment.
2. universal signal waveform acquisition equipment as described in claim 1, which is characterized in that the connector and AD Acquisition Circuit
Between be additionally provided with isolation circuit, the isolation circuit is isolated for realizing data/address bus and tested measurement equipment, to prevent from being tested
There is exception in signal, is damaged to waveform signal collecting device.
3. universal signal waveform acquisition equipment as claimed in claim 1 or 2, which is characterized in that the output end of the connector
It is also connected with the input terminal of serial port control circuit, the input terminal of the output end connection processing device of serial port control circuit, the serial ports control
Circuit processed receives the control instruction of host computer transmission for being communicated with host computer.
4. universal signal waveform acquisition equipment as described in claim 1, which is characterized in that the processor is embedded processing
Device.
5. universal signal waveform acquisition equipment as claimed in claim 2, which is characterized in that the isolation circuit includes that isolation is put
Big device and filter circuit, the output end of the isolated amplifier and the input terminal of filter circuit connect.
6. universal signal waveform acquisition equipment as described in claim 1, which is characterized in that the relay is single-pole double throw
The control terminal of c-type relay, the c-type relay is connect with processor, and common end and the AD Acquisition Circuit of the c-type relay connect
It connects, the normally open end of the c-type relay is connected with each measured signal pin of connector, and the normal-closed end of the c-type relay is hanging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810242248.7A CN108427026A (en) | 2018-03-22 | 2018-03-22 | A kind of universal signal waveform acquisition equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810242248.7A CN108427026A (en) | 2018-03-22 | 2018-03-22 | A kind of universal signal waveform acquisition equipment |
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| Publication Number | Publication Date |
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| CN108427026A true CN108427026A (en) | 2018-08-21 |
Family
ID=63159470
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| CN201810242248.7A Pending CN108427026A (en) | 2018-03-22 | 2018-03-22 | A kind of universal signal waveform acquisition equipment |
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| CN102722150A (en) * | 2012-06-07 | 2012-10-10 | 中国东方电气集团有限公司 | Multi-way waveform acquiring and displaying and data analyzing and processing system based on universal serial |
| CN103376156A (en) * | 2012-04-20 | 2013-10-30 | 肖晓飞 | Optical power collection system with software |
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| CN106371350A (en) * | 2016-08-24 | 2017-02-01 | 湖北三江航天红峰控制有限公司 | Isolation circuit and method for multi-channel AD acquisition |
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| CN106548613A (en) * | 2016-11-02 | 2017-03-29 | 中国人民解放军理工大学 | For the region microwave link networking signal pickup assembly and method of Rainfall estimation |
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005050228A3 (en) * | 2003-11-14 | 2006-01-05 | Impact Technologies Llc | Electrochemical impedance measurement system and method for use thereof |
| CN101666253A (en) * | 2009-09-18 | 2010-03-10 | 杭州电子科技大学 | Control device of tail gas treatment in diesel vehicles |
| CN101916099A (en) * | 2010-08-11 | 2010-12-15 | 深圳市中盟科技股份有限公司 | Signal acquisition device and method thereof |
| CN202331083U (en) * | 2011-11-21 | 2012-07-11 | 哈尔滨市城乡建设委员会 | Universal multifunctional precursor data acquirer |
| CN103376156A (en) * | 2012-04-20 | 2013-10-30 | 肖晓飞 | Optical power collection system with software |
| CN102722150A (en) * | 2012-06-07 | 2012-10-10 | 中国东方电气集团有限公司 | Multi-way waveform acquiring and displaying and data analyzing and processing system based on universal serial |
| CN105549480A (en) * | 2015-12-29 | 2016-05-04 | 中国电力科学研究院 | Distribution equipment state information general data acquisition system and method |
| CN205941682U (en) * | 2016-08-17 | 2017-02-08 | 云南电网有限责任公司电力科学研究院 | Current collection device |
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Application publication date: 20180821 |