CN207441004U - Analog data intelligent acquisition system - Google Patents
Analog data intelligent acquisition system Download PDFInfo
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- CN207441004U CN207441004U CN201721559147.XU CN201721559147U CN207441004U CN 207441004 U CN207441004 U CN 207441004U CN 201721559147 U CN201721559147 U CN 201721559147U CN 207441004 U CN207441004 U CN 207441004U
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Abstract
Analog data intelligent acquisition system disclosed in the utility model, including data acquisition module, D/A converter module, data processing module, ethernet communication module, network transformer, system power supply, mobile handheld terminal, touch-screen, radio receiving transmitting module and network interface, data acquisition module and D/A converter module are connected respectively with data processing module, D/A converter module is connected with eight passage output interfaces, system power supply is powered for data processing module, data processing module is connected with ethernet communication module, ethernet communication module is connected with network transformer, network transformer is connected with network interface, network interface is connected respectively with radio receiving transmitting module and touch-screen, radio receiving transmitting module is connected with mobile handheld terminal.Analog data accurately transmits at a distance, ensures integrality, accuracy of the data during wireless transmission, and monitoring data can accurately be learnt by being achieved after long-range end subscriber can be accessed by Internet, reaches more accurately long-range output control.
Description
Technical field
The utility model is related to a kind of data acquisition device technical fields, especially analog data intelligent acquisition system.
Background technology
Data collecting system is exactly to gather the analog signal of sensor output and be converted to the number that computer can identify
Signal is sent into computer and is recorded or printed, to be monitored to some physical quantitys.A portion data will also be by
Computer in production process is used for controlling some physical quantitys.With the rapid development and popularization of Microcomputer Technology, data
Acquisition monitoring has become the detection technique to become more and more important.Data acquisition is the important step in the systems such as Industry Control, is usually adopted
It is realized with the SCM system of some function opposite independents, as the indispensable part of TT＆C system, the property of data acquisition
Energy feature directly influences whole system.But the data throughout of existing data collecting system is small, the stability of system is not
It is good, and can not realize that analog data is accurately transmitted at a distance, it is necessary to be supervised in real time a fixed location for a long time
It surveys, and is easily interfered in data transmission and acquisition, cause the analog data distortion of acquisition, affect usability
Energy.
Utility model content
The purpose of this utility model is to solve the deficiency of above-mentioned technology and a kind of system stability for designing is good, is promoted
The analog data intelligent acquisition system of performance.
Analog data intelligent acquisition system designed by the utility model, including data acquisition module, digital-to-analogue conversion mould
Block, data processing module, ethernet communication module, network transformer, system power supply, mobile handheld terminal, touch-screen, wireless receipts
Send out module and network interface；Data processing module includes signal checking filter submodule, signal gain compensation submodule, number letter
Number coding and decoding submodule and data computational submodule, signal checking filter submodule respectively with signal gain compensation submodule,
Digital signal encoding decoding sub-module is connected, and data computational submodule also compensates submodule, digital signal with signal gain respectively
Coding and decoding submodule is connected；Data acquisition module includes saw-toothed wave generator, high impedance signal Acquisition Circuit, compares electricity in real time
Road, modulus conversion chip and spacing output circuit, high impedance signal Acquisition Circuit are connected with real-time Comparison Circuit, analog-to-digital conversion core
Piece multipath high-speed sampling analog input channel be connected with the output terminal of spacing output circuit, saw-toothed wave generator in real time
Comparison Circuit is connected, and real-time Comparison Circuit is connected with the input terminal of spacing output circuit；High impedance signal Acquisition Circuit with treat it is defeated
The component for going out analog signal is connected, modulus conversion chip and D/A converter module respectively with signal checking filter submodule phase
Even, D/A converter module is connected with eight passage output interfaces, and system power supply is powered for data processing module, digital signal encoding solution
Numeral module is connected with ethernet communication module, and ethernet communication module is connected with network transformer, network transformer and network
Interface is connected, and network interface is connected respectively with radio receiving transmitting module and touch-screen, radio receiving transmitting module and mobile handheld terminal phase
Even.
Said structure realizes analog data and accurately transmits at a distance, ensure that data during wireless transmission
Integrality, accuracy, monitoring data can accurately be learnt by being achieved after long-range end subscriber can be accessed by Internet, be reached
More accurately long-range output control, anti-interference are stronger.
Further preferably, saw-toothed wave generator includes precision resistance one, precision resistance two, capacitance one, comparator one, capacitance
2nd, capacitance three, resistance one, resistance two, resistance three and triode, precision resistance two are connected in parallel latter end with capacitance one and are grounded,
The other end of capacitance one is connected with one end of precision resistance one, the inverting input of comparator, and the other end of precision resistance one connects
External power supply is connect, the Node connectedness resistance one after comparator in-phase input end is connected with two one end of capacitance connects with transistor collector
Node after connecing, the other end ground connection of capacitance two, the other end connection external power supply of resistance one, two one end of resistance and resistance 31
Node connectedness transistor base after the connection of end, two other end of resistance connection one output terminal of comparator, three other end of resistance and three
Node ground connection after the connection of pole pipe emitter, capacitance three are connected in three both ends of resistance in parallel.Its structure is realized miscellaneous in trap signal
The effect of ripple.
Further preferably, high impedance signal Acquisition Circuit includes resistance four, resistance five, resistance six and capacitance four, resistance six
Latter end is connected in parallel with capacitance four to be grounded, four other end of capacitance is connected with one end of resistance five, the other end and the electricity of resistance five
One end connection of resistance four, the other end incoming analog signal of resistance four.Its structure using simple high impedance divider resistance realize,
Design cost can be reduced, while is filtered using small capacitances, reduces noise jamming.
Further preferably, real-time Comparison Circuit includes comparator two, the node that capacitance four is connected with resistance and comparator two
Reverse input end connects, and the in-phase input end of comparator two is connected with resistance one, and the output terminal of comparator two is with isolating output electricity
Road is connected.Sawtooth signal and analog signal can be compared in real time using the comparator U1B of high impedance, output compares ripple
Shape, if necessary to adjust the parameter of output waveform, the dividing ratios that can adjust sawtooth signal and analog signal input are realized.
Further preferably, isolating output module includes optocoupler, resistance seven and capacitance five, resistance July 1st end and five one end of capacitance
Node connectedness optical coupling secondary edges after connection, resistance seven the other end connection external power supply, capacitance five the other end ground connection, optocoupler with
Modulus conversion chip is connected.Its structure causes signal than more visible.If necessary to the reversion of signal, signal can also be inverted electricity
Road is added in behind this grade, the signal function inverted.
Further preferably, modulus conversion chip is AD7606 modulus conversion chips.
Further preferably, ethernet communication mould network chip in the block is DM9161BIEP chips.
Further preferably, network transformer is HR911105A network transformers.
Further preferably, network interface is RJ45 network interfaces.
Analog data intelligent acquisition system designed by the utility model, structure are solved to voltage, temperature, wet
Degree, electric current etc. are a series of to be finally expressed as the problem that the analog quantity of voltage signal is more accurately transmitted at a distance, digital-to-analogue conversion
Module and data processing module ensure that integrality, accuracy of the data during wireless transmission, and by industry spot
Multiple analog signal is converted to Industrial Ethernet signal, forms the basic element of character of Industrial Ethernet, passes through convenient for long-range end subscriber
Internet can accurately learn the operating parameter of monitoring data and equipment after accessing, reach more accurately long-range output control
System, anti-interference are stronger.
Description of the drawings
Fig. 1 is the overall structure diagram of embodiment 1；
Fig. 2 is the structure diagram of the data acquisition module of embodiment 1；
Fig. 3 is the structure diagram of the modulus conversion chip of embodiment 1.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art's all other embodiments obtained all belong to
In the scope of the utility model protection.
Embodiment 1：
As shown in Figure 1-Figure 3, the described analog data intelligent acquisition system of the present embodiment, including data acquisition module
1st, D/A converter module 3, data processing module 2, ethernet communication module 5, network transformer 10, system power supply 15, mobile hand
Hold terminal 9, touch-screen 7, radio receiving transmitting module 8 and network interface 6；Data processing module 2 includes signal checking filter submodule
21st, signal gain compensation submodule 24, digital signal encoding decoding sub-module 22 and data computational submodule 23, signal checking mistake
Filter module 21 is connected respectively with signal gain compensation submodule 24, digital signal encoding decoding sub-module 22, and data calculate son
Module 23 is also connected with signal gain compensation submodule 24, digital signal encoding decoding sub-module 22 respectively；Data acquisition module 1
It is defeated including saw-toothed wave generator 11, high impedance signal Acquisition Circuit 12, real-time Comparison Circuit 13, modulus conversion chip 14 and isolation
Go out circuit 15, high impedance signal Acquisition Circuit 12 is connected with real-time Comparison Circuit 13, and the multipath high-speed of modulus conversion chip 15 is adopted
The analog input channel of sample is connected with the output terminal of spacing output circuit 14, saw-toothed wave generator 11 and real-time Comparison Circuit 13
It is connected, real-time Comparison Circuit 13 is connected with the input terminal of spacing output circuit 14；High impedance signal Acquisition Circuit 12 with it is to be output
The component of analog signal is connected, modulus conversion chip 15 and D/A converter module 3 respectively with signal checking filter submodule 21
It is connected, 3 pieces of digital-to-analogue conversion mould is connected with eight passage output interfaces 4, and system power supply 15 is powered for data processing module 2, number letter
Number coding and decoding submodule 22 is connected with ethernet communication module 5, and ethernet communication module 5 is connected with network transformer 10, net
Network transformer 10 is connected with network interface 6, and network interface 6 is connected respectively with radio receiving transmitting module 8 and touch-screen 7, wireless receiving and dispatching
Module 8 is connected with mobile handheld terminal 9.
The operation principle of said structure：The output terminal of saw-toothed wave generator 11 and the input terminal of real-time Comparison Circuit 13 are electrical
Connection, for adjusting the frequency of sawtooth waveforms, rising edge and trailing edge as needed, the sawtooth signal of waveform, defeated needed for acquisition
Go out to real-time Comparison Circuit, the output terminal of high impedance signal Acquisition Circuit 12 and the input terminal of real-time Comparison Circuit 13 electrically connect
It connects, for incoming analog signal, exports to real-time Comparison Circuit, output terminal and the spacing output circuit 14 of real-time Comparison Circuit 13
Input terminal be electrically connected, for being compared in real time to sawtooth signal and analog signal, output signal access isolation export
Circuit input end, the pulse that spacing output circuit 14 isolates the output duty cycle fixed frequency proportional with analog signal are wide
Degree modulation (PWM) signal, then its signal through modulus conversion chip 15 from analog signal code conversion into digital signal, believe by number
Number touch-screen or mobile handheld terminal be uploaded to by radio receiving transmitting module or network interface after data processing module processing 2, it is complete
Into data acquisition and upload procedure, the processing procedure of wherein data processing module 2 is：After analog signal is changed into digital signal,
Digital and analogue signals checksum filter submodule 21 is filtered analog signal first, and then signal gain compensation submodule 24 is right
Data after filtering process carry out gain compensation processing, and following data computational submodule 23 is to gain compensation treated data
It is calculated, last digital signal encoding decoding sub-module 22 encodes the data after calculating, and the data after coding are by nothing
Line transceiver module 5 or network interface 6 are sent to touch-screen 7 or mobile handheld terminal 9；It is touched according to the analog data gathered
Screen 7 or mobile handheld terminal 9 make manipulation instruction, instruct the number sended over through radio receiving transmitting module 8 or network interface 6
Digital signal encoding decoding sub-module 22 is decoded digital signal, then signal checking filter submodule by signal first
21 pairs of digital signals carry out checksum filter processing, and following signal gain compensation submodule 24 is to checksum filter treated data
Gain compensation processing is carried out, treated that data calculate to gain compensation for final data computational submodule 23, after calculating
Data are transferred to D/A converter module 3, then export shop equipment control instruction through eight passage output interfaces 4 again.Realize reality
Existing analog data accurately transmits at a distance, ensure that integrality, accuracy of the data during wireless transmission, is able to reality
Monitoring data can be accurately learnt after now long-range end subscriber can be accessed by Internet, reach more accurately long-range output control
System.
In the present embodiment, saw-toothed wave generator includes one R1 of precision resistance, two R2 of precision resistance, one C1 of capacitance, comparator
One U1A, two C2 of capacitance, three C3 of capacitance, one R3 of resistance, two R4 of resistance, resistance three R5 and triode Q1, two R2 of precision resistance and electricity
Hold a C1 and be connected in parallel latter end ground connection, the other end of one C1 of capacitance and one end of one R1 of precision resistance, one U1A of comparator it is anti-
Phase input terminal connects, the other end connection external power supply of one R1 of precision resistance, one U1A in-phase input ends of comparator and two C2 of capacitance
One end connection after one R3 of Node connectedness resistance be connected with triode Q1 collectors after node, another termination of two C2 of capacitance
Ground, one R3 of resistance the other end connection external power supply, two R4 one end of resistance be connected with three R5 one end of resistance after Node connectedness three
Pole pipe Q1 base stages, the two R4 other ends of resistance connection one U1A output terminals of comparator, the three R5 other ends of resistance and triode Q1 emitters
Node ground connection after connection, three C3 of capacitance are connected in three R5 both ends of resistance in parallel.One R1 of precision resistance, two R2 of precision resistance are formed
The divider resistance of reference power supply is filtered by one C1 of capacitance, the negative terminal comparison voltage source of one U1A of composition comparator；One R3 of resistance and
Two C2 of capacitance forms capacitor charging circuit, forms the rising edge waveform of sawtooth waveform.In charging process, when being not reaching to ratio
Compared with one U1A inverting inputs of device reference voltage when, one U1A output terminals of comparator output low level, the base stage of triode Q1 leads to
It crosses resistance R5 and keeps low potential, the base voltage (Vbe) of triode Q1 does not obtain effective voltage, so triode Q1 is not put
Greatly up to saturation conduction, at this point, the waveform of triode Q1 collectors is the charge waveforms of two C2 of capacitance.When one U1A of comparator is same
When phase input terminal voltage reaches the comparison voltage of benchmark, the output end voltage reversion of one U1A of comparator becomes high level, this
According to the reasonable partial pressure and three C3 of capacitance of three R5 of two R4 of resistance and resistance filtering clutter, (capacitance C3 can be gone level depending on actual conditions
Except), it is added in triode Q1 base stages so that triode Q1 changes into saturation conduction state from cut-off state, which is sawtooth waveforms
The trailing edge of waveform, this time can be by adjusting the reasonable partial pressure of three R5 of two R4 of resistance and resistance, the capacitances of three C3 of capacitance
Value and the parameter of triode Q1 are adjusted.Then, due to triode Q1 saturation conductions so that stored on two C2 of capacitance
Charge is discharged immediately by triode Q1, and after the completion of the release of two C2 charges of capacitance, one U1A in-phase input ends of comparator become again
Low potential, the voltage of in-phase input end are less than the reference voltage of inverting input, so as to which the output of one U1A output terminals of comparator is low
Level, triode Q1 reenter cut-off state, and two C2 of capacitance and three R3 of resistance charge, and subsequent cycle starts, such Zhou Erfu
Begin, generate the sawtooth signal met the requirements.
In the present embodiment, high impedance signal Acquisition Circuit includes four R6 of resistance, five R7 of resistance, six R8 of resistance and capacitance four
C4, six R8 of resistance and four C4 of capacitance are connected in parallel latter end ground connection, and the four C4 other ends of capacitance are connected with one end of five R7 of resistance, electricity
The other end for hindering five R7 is connected with one end of four R6 of resistance, the other end incoming analog signal of four R6 of resistance.High impedance signal is adopted
Collector 102 is realized using simple high impedance divider resistance, can reduce design cost, while is filtered using small capacitances, is reduced
Noise jamming.High impedance signal Acquisition Circuit 102 seems simple, but four R6 of resistance, five R7 of resistance, six R8 of resistance must select to close
Suitable resistance, too small impedance easily cause the distortion of signal, and too big impedance is readily incorporated interference, while to consider
The input current that two U1B of comparator needs in real-time Comparison Circuit 103, is microampere (uA) rank or Naan (nA) rank,
So general impedance can consider between 100 kilo-ohms to 1 megaohm.In addition to the scope of effective expression input signal, it is necessary to
Select suitable partial pressure range, so as to get output duty cycle signal in wider scope, it is impossible in gamut
Very little or very big always always, influences sampling precision and sensitivity.
In the present embodiment, real-time Comparison Circuit includes two U1B of comparator, node that four C4 of capacitance is connected with resistance R7 and than
It is connected compared with two U1B reverse input ends of device, the in-phase input end of two U1B of comparator is connected with one R3 of resistance, and two U1B's of comparator is defeated
Outlet is connected with spacing output circuit.Sawtooth signal and analog signal can be carried out using two U1B of comparator of high impedance
It compares in real time, output compares waveform, if necessary to adjust the parameter of output waveform, can adjust sawtooth signal and analog signal
The intrinsic standoff ratio row of input are realized.
In the present embodiment, isolation output module includes five C5 of optocoupler U2, seven R9 of resistance and capacitance, seven R9 one end of resistance and electricity
Hold the Node connectedness optocoupler U2 secondary after the connection of five C5 one end, the other end of seven R9 of resistance connects external power supply, five C5's of capacitance
The other end is grounded, and the input terminal of optocoupler U2 is connected with output terminal with modulus conversion chip.Resistance R9 is pull-up resistor, gives optocoupler U2
The certain operating current of output stage, five C5 of capacitance is the filter capacitor of high frequency so that signal is than more visible.If necessary to signal
Reversion, signal circuit for reversing can also be added in behind this grade, the signal inverted.
In the present embodiment, modulus conversion chip is AD7606 modulus conversion chips.Ethernet communication mould network core in the block
Piece is DM9161BIEP chips.Network transformer is HR911105A network transformers.Network interface is RJ45 network interfaces.Its
Structure causes the performance of data acquisition, transmission and upload more, improves using effect.
The utility model is not limited to above-mentioned preferred forms, anyone can draw under the enlightenment of the utility model
Other various forms of products, however, make any variation in its shape or structure, it is every that there is same as the present application or phase
Approximate technical solution, all falls within the scope of protection of the utility model.
Claims (9)
1. a kind of analog data intelligent acquisition system, analog data intelligent acquisition system, including data acquisition module, digital-to-analogue
Modular converter, data processing module, ethernet communication module, network transformer, system power supply, mobile handheld terminal, touch-screen,
Radio receiving transmitting module and network interface, it is characterised in that:Data processing module includes signal checking filter submodule, signal gain
Compensate submodule, digital signal encoding decoding sub-module and data computational submodule, signal checking filter submodule respectively with letter
Number gain compensation submodule, digital signal encoding decoding sub-module are connected, and data computational submodule is also mended with signal gain respectively
Repay submodule, digital signal encoding decoding sub-module is connected；Data acquisition module includes saw-toothed wave generator, high impedance signal is adopted
Collector, real-time Comparison Circuit, modulus conversion chip and spacing output circuit, high impedance signal Acquisition Circuit with comparing electricity in real time
Road is connected, and the analog input channel of the multipath high-speed sampling of modulus conversion chip is connected with the output terminal of spacing output circuit,
Saw-toothed wave generator is connected with real-time Comparison Circuit, and real-time Comparison Circuit is connected with the input terminal of spacing output circuit；High impedance
Signal acquisition circuit is connected with the component of analog signal to be output, modulus conversion chip and D/A converter module respectively with signal
Checksum filter submodule is connected, and D/A converter module is connected with eight passage output interfaces, and system power supply supplies for data processing module
Electricity, digital signal encoding decoding sub-module are connected with ethernet communication module, and ethernet communication module is connected with network transformer,
Network transformer is connected with network interface, and network interface is connected respectively with radio receiving transmitting module and touch-screen, radio receiving transmitting module
It is connected with mobile handheld terminal.
2. analog data intelligent acquisition system according to claim 1, it is characterised in that：Saw-toothed wave generator includes essence
Cipher telegram resistance one, precision resistance two, capacitance one, comparator one, capacitance two, capacitance three, resistance one, resistance two, three and three pole of resistance
Pipe, precision resistance two and capacitance one are connected in parallel latter end and are grounded, the other end of capacitance one and one end of precision resistance one, compared with
The inverting input connection of device, the other end connection external power supply of precision resistance one, comparator in-phase input end and capacitance 21
Node connectedness resistance one after the connection of end be connected with transistor collector after node, the other end of capacitance two is grounded, resistance one
The other end connection external power supply, two one end of resistance be connected with three one end of resistance after Node connectedness transistor base, resistance two
The other end connects one output terminal of comparator, and the node after three other end of resistance is connected with transistor emitter is grounded, and capacitance three is simultaneously
Connection is connected to three both ends of resistance.
3. analog data intelligent acquisition system according to claim 2, which is characterized in that high impedance signal Acquisition Circuit
Including resistance four, resistance five, resistance six and capacitance four, resistance six is connected in parallel latter end with capacitance four and is grounded, and capacitance four is another
End is connected with one end of resistance five, and the other end of resistance five is connected with one end of resistance four, the other end access simulation of resistance four
Signal.
4. analog data intelligent acquisition system according to claim 3, which is characterized in that real-time Comparison Circuit include than
Compared with device two, the node that capacitance four is connected with resistance is connected with two reverse input end of comparator, the in-phase input end of comparator two with
Resistance one connects, and the output terminal of comparator two is connected with spacing output circuit.
5. analog data intelligent acquisition system according to claim 4, which is characterized in that isolation output module includes light
Coupling, resistance seven and capacitance five, resistance July 1st end be connected with five one end of capacitance after Node connectedness optical coupling secondary edges, resistance seven it is another
End connection external power supply, the other end ground connection of capacitance five, optocoupler are connected with modulus conversion chip.
6. analog data intelligent acquisition system according to claim 5, which is characterized in that modulus conversion chip is
AD7606 modulus conversion chips.
7. analog data intelligent acquisition system according to claim 1, which is characterized in that ethernet communication mould is in the block
Network chip is DM9161BIEP chips.
8. analog data intelligent acquisition system according to claim 1, which is characterized in that network transformer is
HR911105A network transformers.
9. analog data intelligent acquisition system according to claim 1, which is characterized in that network interface is RJ45 networks
Interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721559147.XU CN207441004U (en) | 2017-11-20 | 2017-11-20 | Analog data intelligent acquisition system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721559147.XU CN207441004U (en) | 2017-11-20 | 2017-11-20 | Analog data intelligent acquisition system |
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| Publication Number | Publication Date |
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| CN207441004U true CN207441004U (en) | 2018-06-01 |
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| CN201721559147.XU Expired - Fee Related CN207441004U (en) | 2017-11-20 | 2017-11-20 | Analog data intelligent acquisition system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112994237A (en) * | 2021-02-25 | 2021-06-18 | 上海理工大学 | Remote current and voltage monitoring system based on cloud storage and wireless communication technology |
-
2017
- 2017-11-20 CN CN201721559147.XU patent/CN207441004U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112994237A (en) * | 2021-02-25 | 2021-06-18 | 上海理工大学 | Remote current and voltage monitoring system based on cloud storage and wireless communication technology |
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