CN109708691A - A kind of multichannel temperature and ess-strain on-line measurement integrated system and method - Google Patents
A kind of multichannel temperature and ess-strain on-line measurement integrated system and method Download PDFInfo
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- CN109708691A CN109708691A CN201811494465.1A CN201811494465A CN109708691A CN 109708691 A CN109708691 A CN 109708691A CN 201811494465 A CN201811494465 A CN 201811494465A CN 109708691 A CN109708691 A CN 109708691A
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Abstract
The present invention provides a kind of multichannel temperature and ess-strain on-line measurement integrated systems, including the data acquisition module with multiple data acquisition boards, for acquiring the temperature and stress-strain data signal of the parts to be tested simultaneously；Data processing module for controlling the switching of the data acquisition of data acquisition board while receiving the temperature and stress-strain data of the data acquisition board after corresponding switching, and pre-processes the multichannel temperature and stress data of acquisition；Calculation processing platform, for analyzing pretreated temperature and stress-strain data, operation, judgement and early warning, and control command is sent to the data processing module, so that the data processing module carries out the switch of data acquisition, switching to the data acquisition module.The present invention can simultaneously/it is individually online carry out temperature, the acquisition of the data of strain, analysis, operation, display, storage and various control functions, by the analysis of data, operation, analysis temperature field and stress state.
Description
Technical field
The present invention relates to temperature and stress-strain measurement and monitoring integrated technology field more particularly to a kind of multichannel temperatures
And ess-strain on-line measurement integrated system and method.
Background technique
In industrial processes, generally require that the technological parameters such as temperature, stress, strain are measured, monitored and recorded.
In welding process, field of welding temperature and welding strain-stress directly affect product quality.
Existing ordinary temperature measuring device is various in style in the market, as thermometer, tempilstick and thermocouple, thermistor,
Sensors thermometric such as infrared ray etc..Thermocouple temperature measurement is as a kind of simple structure, economic convenient, the complete temperature survey of type kind
Amount method is widely used in welding, intermetallic composite coating, preheating, interlayer temperature control, the instruction of heat treatment of workpieces temperature, can also do and become
The warning instruction that depressor, heating furnace, motor, electronic component, hydraulic system, fever tablet, heat exchanger etc. overheat when operating.
The design of engineering structure part, manufacture, in assembling process through being measured frequently with foil gauge to stress, strain, in turn
Reliability and safety are analyzed and evaluated.Mainly part is measured by being pasted onto the foil gauge on part measured point surface
Surface strain variations, determine surface stress further according to strain-stress relation.
With the development of technology, the requirement in production to temperature and stress-strain measurement device is higher and higher.The country about
Temperature, the measuring device of ess-strain have carried out more research, but some problems exist in the prior art: having a single function, collect
Become second nature poor, need to carry out by more set equipment the measurements of temperature, ess-strain, lack be provided simultaneously with temperature, ess-strain exists
The integrated system of line monitoring function；Data acquiring frequency is lower, and the response time is too long, and real-time is poor；Data acquisition channel number
It is less, if the costly disposable general data only surveying single-point or doing of extension；Accuracy of data acquisition and acquisition stability are poor,
The various external interference signals of industry spot can have a huge impact measurement accuracy, and systematic error is big；Measurement range
It is small；Data ability real-time display and memory module are single；The post-processing of data is not well positioned to meet higher and higher examination with analysis
Test requirement etc..
So need to seek that a kind of precision is high, acquisition channel is more, reaction speed is fast, stability is good, real-time is good, integration
Temperature and ess-strain on-line measurement integrated system high, at low cost.
Summary of the invention
The present invention in view of the above technical problems, provides a kind of multichannel temperature and the integrated system of ess-strain on-line measurement
System, solves and has a single function in the prior art, and integration is poor, needs to carry out by more set equipment the survey of temperature, ess-strain
The technical issues of measuring, lacking the integrated system for being provided simultaneously with temperature, ess-strain on-line monitoring function.
The present invention is used to solve the technical solution of the above technical problem, and a kind of multichannel temperature and ess-strain are surveyed online
Measure integrated system, including the data acquisition module with multiple data acquisition boards, for acquire simultaneously the parts to be tested temperature and
Stress-strain data signal；
Data processing module connects each data acquisition board, the switching of the data acquisition for controlling data acquisition board,
The temperature and stress-strain data of data acquisition board after receiving corresponding switching simultaneously, and to the multichannel temperature and stress of acquisition
Data are pre-processed；
Calculation processing platform connects data processing module, for carrying out to pretreated temperature and stress-strain data
Analysis, operation, judgement and early warning, and control command is sent to the data processing module, so that the data processing module pair
The data acquisition module carries out the switch of data acquisition, switching.
Wherein, multiple data acquisition boards are all connected with a cold junction compensation circuit in connection, each data acquisition board side by side,
For to acquisition temperature and stress-strain data be corrected；
The data acquisition module further includes relay integrated switch, connects the parts to be tested by conducting wire respectively and data are adopted
Collect each channel of plate and turns on or off corresponding Measurement channel for receiving the channel selection command of calculation processing platform.
Wherein, the data processing module further include: micro treatment module MCU, the digital switch being connect respectively with MCU, AD
Conversion chip and driving chip, the micro treatment module MCU are used to adopt by the corresponding data of digital switch control
Collect the switching of the data acquisition of plate；The AD conversion chip be used to receive the data acquisition board after corresponding switching the temperature and
The analog signal of the temperature and stress data is converted to digital information and is sent at MCU by stress data signal
Treated temperature and stress data signal are passed through the driving chip wireless telecommunications or cable transmission by reason.
Wherein, the calculation processing platform includes movement device and man-machine interface, and treated for receiving for the movement device
Temperature and stress data signal, while operation, analysis are carried out to treated the temperature and stress data signal, by operation,
Analysis result and received temperature and stress data signal are shown in man-machine interface.
Wherein, the calculation processing platform further includes memory, for storing analysis result and received temperature and stress
Strain data；The movement device be also used to based on the analysis results, with the temperature and stress data threshold value that are stored in memory into
Row compares, if being below or above temperature and stress data threshold range, carries out early warning.
On the other hand, the present invention also provides a kind of multichannel temperature and ess-strain On-line Measuring Method, the methods
Include the following steps:
The temperature and stress-strain data signal of the parts to be tested are acquired simultaneously；
The switching of the data acquisition of control data acquisition board, the temperature for receiving the data acquisition board after corresponding switching simultaneously and
Stress-strain data, and the multichannel temperature and stress-strain data of acquisition are pre-processed；
Pretreated temperature and stress-strain data are analyzed, operation, judgement and early warning, and to data processing mould
Block sends control command, so that the data processing module carries out the switch of data acquisition, switching to the data acquisition module.
Wherein, it is also handled as follows after temperature that is described while acquiring the parts to be tested and stress-strain data signal: right
The temperature and stress-strain data of acquisition are corrected, and by after correction temperature and stress-strain data by corresponding
Data acquisition board is transmitted to data processing module；
It is also handled as follows before temperature that is described while acquiring the parts to be tested and stress-strain data signal: receiving and calculate
The channel selection command of processing platform turns on or off corresponding Measurement channel.
Wherein, the switching of the data acquisition of the control data acquisition board, receive the data acquisition after corresponding switching simultaneously
The temperature and stress-strain data of plate, and to carry out pretreated step specific for multichannel temperature to acquisition and stress-strain data
Include:
Pass through the switching of the data acquisition of the corresponding data acquisition board of digital switch control；
AD conversion chip receives the temperature and stress data signal of the data acquisition board after corresponding switching, to acquisition
The analog signal of temperature and stress data described in multichannel is converted to digital information and is sent to MCU and handled；
Treated temperature and stress data signal are transmitted by driving chip wireless telecommunications or cable.
Wherein, described that pretreated temperature and stress-strain data are analyzed, operation, judgement and early warning, and to
Data processing module sends control command, so that the data processing module carries out data acquisition to the data acquisition module
After switching further include:
The analysis result of operation, judgement and early warning and received temperature and stress data signal are shown in man-machine interface
On.
Wherein, described that analysis result and received temperature and stress data signal are shown to further include depositing after man-machine interface
It stores up step: storing the analysis result and received temperature and stress data；
Described to analyze pretreated temperature and stress-strain data, operation, judgement and early warning further comprise:
Based on the analysis results, it is compared with the temperature and stress data threshold value being stored in memory, if being below or above temperature
With stress data threshold range, warning note is carried out, warning note includes sound-light alarm and shows real-time temperature in man-machine interface
Degree and stress data.
Technical solution provided in an embodiment of the present invention has the benefit that by establishing a kind of multichannel temperature and answering
Stress-strain on-line measurement integrated system, solves and has a single function in the prior art, and integration is poor, needs to open by more set equipment
The measurement for opening up temperature, ess-strain lacks and is provided simultaneously with the technology of the integrated system of temperature, ess-strain on-line monitoring function and asks
Topic.A kind of multichannel temperature and ess-strain on-line measurement integrated system proposed by the present invention and method, can simultaneously/individually exist
Line carries out temperature, the acquisition of the data of strain, analysis, operation, display, storage and various control functions, passes through the analysis of data, fortune
It calculates, analyzes temperature field and stress state.The present invention provides the online dynamic of 1~160 road Measurement channel and concurrently or separately measures temperature
With ess-strain signal, acquisition channel Quick Extended or opening and closing are supported, and each channel is independent of each other, by arranging that multiple measurements are logical
Road can construct temperature field, stress-strain field that testee changes over time；The present invention uses Redundancy Design scheme, monolithic
Machine MCU and host computer can carry out data processing, operation and action control, not only integrate but also disperse, and guarantee to use under extreme case
Property；Measuring system reaction speed is fast, and sample frequency is minimum to reach 10~20 times/second, acquisition on-off and acquisition switching, frequency acquisition
Processing with acquisition data can be set and be controlled；Invention enhances anti-interference ability (such as: high-frequency arc strike), support failure
Detection (such as open circuit detection), improves the reliability of module；The present invention has cold junction compensation and breakage detection function, has data
Acquisition, analysis, operation, display, storage and post-processing (such as: exceeded alarm, breaking alarming) function, it is easy to operate；The present invention
The measure traverse line that can choose different size can measure different range by compensation data, gain adjustment and other respective handlings
Temperature, the ess-strain situation of change in section, and measure sensitivity and measurement accuracy height；The configuration of the present invention is simple, it is easy to operate,
It can be widely applied to temperature and ess-strain integral measuring and control field.Meanwhile the present invention slightly improved can to electric current,
Other analog quantitys such as voltage, pressure measure.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is that the multichannel temperature of the offer of the embodiment of the present invention one and the structure of ess-strain on-line measurement integrated system are shown
It is intended to；
Fig. 2 is another knot of the multichannel temperature that the embodiment of the present invention one provides and ess-strain on-line measurement integrated system
Structure schematic diagram；
Fig. 3 is the specific knot of the multichannel temperature that the embodiment of the present invention one provides and ess-strain on-line measurement integrated system
Structure schematic diagram；
Fig. 4 is another tool of the multichannel temperature that the embodiment of the present invention one provides and ess-strain on-line measurement integrated system
Body structural schematic diagram；
Fig. 5 is another tool of the multichannel temperature that the embodiment of the present invention one provides and ess-strain on-line measurement integrated system
Body structural schematic diagram；
Fig. 6 is the workflow of multichannel temperature and ess-strain on-line measurement integrated approach provided by Embodiment 2 of the present invention
Journey schematic diagram；
Fig. 7 is the sub-step of step S100；
Fig. 8 is the sub-step of step S200；
Fig. 9 is the sub-step of step S300.
Specific embodiment
The present invention solves to be had a single function in the prior art, and integration is poor, is needed to carry out temperature by more set equipment, be answered
The measurement of stress-strain, the technical issues of lacking the integrated system for being provided simultaneously with temperature, ess-strain on-line monitoring function.The present invention
A kind of multichannel temperature and ess-strain on-line measurement integrated system and method proposed, can simultaneously/individually online carry out temperature
Degree, data acquisition, analysis, operation, display, storage and the various control functions strained pass through the analysis of data, operation, analysis
Temperature field and stress state.Its core concept is: establishing a kind of multichannel temperature and ess-strain by providing a design scheme
On-line measurement integrated system realizes ring-like cascade by winding displacement using multi-block data collection plate, and a data acquisition module can prop up
The cascade of multi-block data collection plate is held, every piece of data acquisition board supports multi-channel measurement conducting wire and corresponding cold junction compensation signal defeated
Enter.Analog signal inputs by differential mode and uploads to data processing module, and multichannel can automatically switch, adopt when data acquire
Collect switching frequency by the process control of data processing module, can will treated data by in a manner of wireless telecommunications or cable
It is processed and displayed after passing to calculation processing platform, uploads to liquid crystal display after can also directly handling data and show.
The present invention provides a kind of precision height, acquisition channel is more, reaction speed is fast, stability is good, real-time is good, integration is high, cost
Low temperature and ess-strain on-line measurement integrated system, have while measuring temperature, ess-strain integrated functionality, can also be single
Solely temperature, ess-strain are measured；The online dynamic of 1~160 road Measurement channel is provided concurrently or separately to measure temperature and answer
Stress-strain signal supports acquisition channel Quick Extended or opening and closing, is able to achieve online real time dynamic measurement, and the mutual not shadow in each channel
It rings, temperature field, the stress-strain field that testee changes over time can be constructed；Have data acquisition, analysis, operation, display,
Storage and post-processing (such as: exceeded alarm, breaking alarming) function；Solve the problems, such as that data acquiring frequency is low, the response time is long,
The minimum 10 times/second acquisition on-off and acquisition switching, the processing of frequency acquisition and acquisition data of reaching of sample frequency can be set
And control；Enhance anti-interference ability (such as: high-frequency arc strike), supports fault detection (such as disconnected detection), improve the reliability of equipment；It is logical
The processing such as compensation data, gain adjustment is crossed, guarantees the sensitivity and measurement accuracy of measurement needed for meeting engineer application；After adjustment
It can be used for the measurement of other analog quantitys such as electric current, voltage, pressure.
In order to enable those skilled in the art that the present invention is more clearly understood, below in conjunction with attached drawing and specific implementation
Example does further detailed description to the present invention.
Embodiment one
Fig. 1 is that the multichannel temperature of the offer of the embodiment of the present invention one and the structure of ess-strain on-line measurement integrated system are shown
It is intended to, as shown in Figure 1: a kind of multichannel temperature and ess-strain on-line measurement integrated system, including is acquired with multiple data
The data acquisition module 200 of plate, for acquiring the temperature and stress-strain data signal of the parts to be tested 100 simultaneously；
Data processing module 300 connects each data acquisition board, and what the data for controlling data acquisition board acquired cuts
Change while receiving the temperature and stress-strain data of the data acquisition board after corresponding switching, and to the multichannel temperature of acquisition and
Stress data is pre-processed；
Calculation processing platform 400 connects data processing module 300, for pretreated temperature and ess-strain number
According to being analyzed, operation, judgement and early warning, and control command is sent to the data processing module 300, so that at the data
Manage switch, switching that module 300 carries out data acquisition to the data acquisition module.
The present invention can choose the measure traverse line of different size, by compensation data, gain adjustment and other respective handlings,
It can measure temperature, the ess-strain situation of change in different range section, and measure sensitivity and measurement accuracy height；Structure of the invention
Simply, easy to operate, it can be widely applied to temperature and ess-strain integral measuring and control field.Meanwhile the present invention is through slightly
Improvement can measure other analog quantitys to electric current, voltage, pressure etc..
Fig. 2 is another knot of the multichannel temperature that the embodiment of the present invention one provides and ess-strain on-line measurement integrated system
Structure schematic diagram, as shown in Figure 2: the data acquisition module 200 include multiple data acquisition boards 201, cold junction compensation circuit 202 with
And relay integrated switch 203.Multiple data acquisition boards 201 are all connected with one in connection, each data acquisition board 201 side by side
Cold junction compensation circuit 202, for acquisition temperature and stress-strain data be corrected；The relay integrated switch 203,
The parts to be tested 100 and each channel of data acquisition board 201 are connected by conducting wire respectively, for receiving the logical of calculation processing platform 400
Road select command turns on or off corresponding Measurement channel.Data acquisition board 201 acquires come from thermocouple/foil gauge simultaneously
The electromotive force of measurement end and cold junction compensation circuit 202 is uploaded to data processing module 200 after filtering noise reduction, differential amplification, number
May be programmed gain amplifier according to collection plate 201 is 0.5,1.5,10,50,100,500 and 1000, and amplification factor can be by data acquisition board
Gain switch on 201 is adjusted, and can also realize process control by calculation processing platform 400.Data acquisition board 201 has disconnected
Road detection function, principle are by the way that pull-up resistor is added in circuit, and monitoring input circuit resistance is to determine whether open in work
Road is to judging open circuit: when detecting measure traverse line open circuit, i.e., loop resistance infinity when, export a preset value
Or symbol.Breakage detection function can be used for integrated equipment and the complicated dangerous measurement occasion of operating condition.Data acquisition board 201 is with logical
It crosses winding displacement and realizes ring-like cascade, data acquisition board 201 cascades quantity and determined according to on-site actual situations.Temperature measurement and stress are answered
Become measurement and uses different data acquisition modules.Switching when acquisition between data acquisition board 201 is controlled by data processing module 300
System.Cold junction compensation circuit 202 is used for the calibration of measurement data, and by taking thermometric as an example, thermocouple is that cold end is surveyed with 0 DEG C for standard
Amount, cold junction compensation is to reduce to reduce the indemnifying measure done since cold end does not cause thermoelectrical potential difference by 0 DEG C.Cold junction compensation electricity
Road 202 is shielded using metal shield (screen ground connection), can prevent electromagnetism, high-frequency and high-voltage electric field etc. from interfering.Every block number
16 channel measurement conducting wires and corresponding 202 signal of cold junction compensation input are supported according to collection plate 201, and each road analog signal passes through difference side
Formula inputs and uploads to data processing module 300, and channel switching, acquisition switching frequency are by 300 journey of data processing module when acquisition
Sequence control.
Relay integrated switch 203 is assemblied between 201 corresponding channel of thermocouple/foil gauge and collection plate, passes through calculating
The process control of processing platform 400 realizes the on-off of each relay, thus opening/closing corresponding data acquisition according to actual needs
Channel.Relay integrated switch 203 connects data acquisition board 201, it is possible to reduce because electromotive force caused by connecting material is different misses
Difference.Corresponding 1 midget relay individually controls the on-off between data acquisition board 201.Each midget relay is small-sized, reacts
Each midget relay is integrated on one piece of small circuit board by agility, relay integrated switch 203, according to actual needs organize bunchiness/
Parallel circuit increases several switches in circuit, is powered by multifunctional power 502 is unified.Circuit is normally opened under normality, each channel measurement
Conducting wire is disconnected with data acquisition board 201, by the process control relay integrated switch 203 of calculation processing platform 400
Closure realizes that corresponding midget relay is powered, and corresponding channel measure traverse line and 201 moment of data acquisition board connect.Relay collection
It is used at switch 203: 1) preventing welding etc. from generating the occasions such as high-frequency percussion wave, relay integrated switch 203 is disconnected before high-frequency arc strike
It opens, the closure of relay integrated switch 203 starts to test after the starting the arc；2) on-off for controlling specified data acquisition channel, realizes acquisition
On-off and acquisition switching.
Fig. 3 is the specific knot of the multichannel temperature that the embodiment of the present invention one provides and ess-strain on-line measurement integrated system
Structure schematic diagram, it is shown in Figure 3: data processing module 300 further include: micro treatment module MCU301 is connect with MCU301 respectively
Digital switch 301, AD conversion chip 303 and driving chip 304, the MCU301 be used for pass through the digital switch 302
The switching of the data acquisition of the corresponding data acquisition board 201 of control；After the AD conversion chip 303 is for receiving corresponding switching
Data acquisition board 201 the temperature and stress data signal, the analog signal of the temperature and stress data is converted to
Digital information is simultaneously sent to MCU301 and is handled, and treated temperature and stress data signal are passed through the driving chip
304 wireless telecommunications are transmitted by 304 cable of driving chip.The data processing module further includes embedded software, soft
Part is programmed using C language, is driven and is controlled to single-chip microcontroller.MCU301 while and A/D in data processing module 300
Conversion chip 303, Ethernet driving chip 304 and digital switch 301 are communicated, and communication uses Modbus/TCP agreement, association
View is divided into client-side program and server two parts when realizing.MCU301 program is programmed using C language, is data processing
The core of module 300 is responsible for the data processing of A/D conversion 303 upload digital signal of core, and digital signal is turned by formula conversion
Become temperature, ess-strain signal.MCU301 is by digital switch 302 to each data acquisition board in data acquisition module 200
201, the acquisition switching of cold junction compensation circuit 202 and frequency acquisition are controlled, and frequency acquisition is minimum to reach 10~20 times/second.
MCU301 is communicated through Ethernet driving chip 304 with calculation processing platform 400.MCU301 both can will treated data
Calculation processing platform 400 is uploaded to by Ethernet transmission, is shown by man-machine interface 402, liquid can also be directly connected to
Crystalline substance screen is shown.A/D conversion chip 303 is that the voltage signal transmitted on data acquisition module 200 is converted to digital signal,
Ethernet driving chip 304 is the Ethernet transfer function for making system have data and program, and digital switch 302 is data processing
Control channel of the module 300 to data acquisition module 200.
Fig. 4 is another tool of the multichannel temperature that the embodiment of the present invention one provides and ess-strain on-line measurement integrated system
Body structural schematic diagram, shown in Figure 4: the calculation processing platform 400 includes acting device 401 and man-machine interface 402, described
Device 401 is acted for receiving treated temperature and stress data signal, while to treated temperature and the stress data
Signal carries out operation, analysis, and operation, analysis result and received temperature and stress data signal are shown in man-machine interface 402
On.The calculation processing platform 400 further includes memory 403, for storing analysis result and received temperature and ess-strain
Data；The movement device 401 is also used to based on the analysis results, with the temperature and stress data threshold value being stored in memory 403
It is compared, if being below or above temperature and stress data threshold range, carries out early warning.Man-computer interface 402 be by
The software programmings such as Labview, program can be acquired to data after entering MCU301 by Ethernet driving chip 304 and data processing
Operation control is carried out, program is by digital switch 302 to each data acquisition board 201, the compensation circuit in data acquisition module 200
202 acquisition on-off, acquisition switching, frequency acquisition and gain amplifier etc. are controlled.Man-computer interface 400 also has
The data processing function of MCU301, the data that can be uploaded to data processing module 200 are further processed.Computer man-machine circle
Face 400 supports each channel measurement temperature/ess-strain waveform to show, supports the visual switch of waveform, with real time temperature/answer
Stress-strain acquisition and temperature field/stress-strain field analytic function, while each channel measurement temperature/ess-strain with Excel etc.
Form is saved in memory 403.It is arranged by program, movement device 401 can carry out exceeded early warning as required, or be based on this measurement
The advanced expert system of the data mining of system.
Fig. 5 is another tool of the multichannel temperature that the embodiment of the present invention one provides and ess-strain on-line measurement integrated system
Body structural schematic diagram, shown in Figure 5: the system also includes power-supply system 500, the power-supply system 500 includes power supply
Filter 501 and multifunctional power 502.Industrial alternating current (such as: 220V, 380V) enters multi-functional electricity through power-supply filter 501
Source 502, power-supply filter 501 can improve the anti-interference ability of equipment.Multifunctional power 502 is data acquisition module 200, data
Processing module 300 provides direct current output (such as :+5V ,+12V) respectively, and outside is independently-powered to avoid data acquisition module 200, number
The shortcomings that according to the power supply weaker or even electricity shortage of processing module 300, and guarantee mutually to be independent of each other.
Multifunctional power 502 by power-supply filter 501 industrial alternating current be converted to data acquisition module 200,
Direct current output needed for data processing module 300, data acquisition module 200, data processing module 300 work.Measure traverse line
The electromotive force sensed is transmitted to data acquisition board 201, relay through relay integrated switch 203 by (such as: thermocouple, foil gauge)
Integrated switch 203 controls the on-off of each channel measurement conducting wire and data acquisition module 200, the acquisition pair simultaneously of data acquisition board 201
The analog quantity for the cold junction compensation circuit 202 answered is input to data processing module after filtering, rectification, amplification in a differential manner
300.The voltage signal transmitted on data acquisition module 200 is converted to digital signal by A/D conversion chip 303, the number after conversion
Word signal both can carry out data processing by MCU301, be converted by formula digital signal transition is straight into temperature or strain stress
It connects and passes to liquid crystal display and show, calculation processing platform 400 can also be transferred to by Ethernet driving chip 304, it is man-machine
Interface 402 also has data processing function, and it is aobvious that the data that can be uploaded to data processing module 300 are further processed progress temperature
Show, formula conversion process, storage and corresponding relevant action (such as exceeded alarm, association expert system).By arranging multiple surveys
Channel is measured, temperature field, the stress-strain field that testee changes over time can be constructed.402 program of man-computer interface
Data can be acquired after entering MCU301 by Ethernet driving chip 304 and data processing carries out operation control, program passes through
Digital switch 302 cuts the acquisition on-off of each data acquisition board 201, compensation circuit 202 in data acquisition module 200, acquisition
It changes, frequency acquisition and gain amplifier etc. are controlled.Program enters relay integrated switch 203 controllably by digital switch 302
The on-off of data acquisition processed.
Embodiment two
Present invention implementation provides a kind of multichannel temperature and ess-strain on-line measurement integrated approach, is suitable for embodiment
A kind of multichannel temperature and ess-strain on-line measurement integrated system shown in one, in order to realize above-mentioned multichannel temperature and stress
On-line measurement integrated system is strained, Fig. 6 is multichannel temperature and ess-strain on-line measurement collection provided by Embodiment 2 of the present invention
At the work flow diagram of method, mainly include the following steps:
S100, the temperature and stress-strain data signal for acquiring the parts to be tested simultaneously；
Referring to Fig. 7, step S100 further comprises following steps:
S110, the temperature and stress-strain data of acquisition are corrected, and by the temperature and ess-strain number after correction
Data processing module is transmitted to according to by corresponding data acquisition board；
S120, the channel selection command for receiving calculation processing platform, turn on or off corresponding Measurement channel；
S200, control data acquisition board data acquisition switching, receive the data acquisition board after corresponding switching simultaneously
Temperature and stress-strain data, and the multichannel temperature and stress-strain data of acquisition are pre-processed；
Referring to Fig. 8, step S200 further comprises following steps:
S210, the switching acquired by the data of the corresponding data acquisition board of digital switch control；
S220, AD conversion chip receive the temperature and stress data signal of the data acquisition board after corresponding switching, it is right
Temperature described in the multichannel of acquisition and the analog signal of stress data are converted to digital information and are sent to MCU and handled；
S230, treated temperature and stress data signal are passed through into the driving chip wireless telecommunications or cable transmission.
S300, pretreated temperature and stress-strain data are analyzed, operation, judgement and early warning, and to data
Processing module sends control command, opens so that the data processing module carries out data acquisition to the data acquisition module
It closes, switching；
Referring to Fig. 9, step S300 further comprises following steps:
S310, the analysis result of operation, judgement and early warning and received temperature and stress data signal are shown man-machine
On interface；
S320, storage analysis result and received temperature and stress-strain data；
S330, based on the analysis results, is compared, if being lower than with the temperature and stress data threshold value being stored in memory
Or it is higher than temperature and stress data threshold range, early warning and alarming prompt is carried out, warning note includes sound-light alarm and man-machine
The real-time temperature of interface display and stress data.
It should be understood that above-described embodiment provides system when integrated approach is realized, only with above-mentioned each functional module
It divides and carries out for example, can according to need by above-mentioned function distribution by different functional modules in practical application, i.e., will
The internal structure of equipment is divided into different functional modules, to complete all or part of the functions described above.In addition, above-mentioned
The system and method embodiment that embodiment provides belongs to same design, and specific implementation process is detailed in the description of embodiment of the method,
Which is not described herein again.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium.The handoff functionality of control or realization mentioned above is realized by controller, and controller can be
Central processing unit (Central Processing Unit, CPU), can also be other general processors, Digital Signal Processing
Device (Digital Signal Processor, DSP), specific integrated circuit (Application Specific Integrated
Circuit, ASIC), ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other can
Programmed logic device, discrete gate or transistor logic, discrete hardware components etc..General processor can be microprocessor
Or the processor is also possible to any conventional processor etc..Memory mentioned above can be the storage of terminal built-in
Equipment, such as hard disk or memory.Present system further comprises memory, and the external storage that memory is also possible to system is set
It is standby, plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card,
Flash card (Flash Card) etc..Memory can also both include the internal storage unit of system, also include External memory equipment,
For storing computer program and required other programs and information.Memory can be also used for temporarily storing and export
Or the information that will be exported.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of multichannel temperature and ess-strain on-line measurement integrated system, which is characterized in that including being adopted with multiple data
The data acquisition module for collecting plate, for acquiring the temperature and stress-strain data signal of the parts to be tested simultaneously；
Data processing module connects each data acquisition board, the switching, simultaneously that the data for controlling data acquisition board acquire
The temperature and stress-strain data of data acquisition board after receiving corresponding switching, and to the multichannel temperature and stress data of acquisition
It is pre-processed；
Calculation processing platform connects data processing module, for analyzing pretreated temperature and stress-strain data,
Operation, judgement and early warning, and control command is sent to the data processing module, so that the data processing module is to the number
Switch, the switching of data acquisition are carried out according to acquisition module.
2. system according to claim 1, which is characterized in that multiple data acquisition boards are in connection side by side, each data
Collection plate is all connected with a cold junction compensation circuit, for acquisition temperature and stress-strain data be corrected；
The data acquisition module further includes relay integrated switch, connects the parts to be tested and data acquisition board by conducting wire respectively
Each channel turns on or off corresponding Measurement channel for receiving the channel selection command of calculation processing platform.
3. system according to claim 2, which is characterized in that the data processing module further include: micro treatment module MCU,
Digital switch, AD conversion chip and the driving chip connecting respectively with micro treatment module MCU, the micro treatment module MCU are used
In the switching of the data acquisition by the corresponding data acquisition board of digital switch control；The AD conversion chip is for connecing
The temperature and stress data signal of data acquisition board after receiving corresponding switching, the simulation of the temperature and stress data is believed
It number is converted to digital information and is sent to MCU and handled, treated temperature and stress data signal are passed through into the driving
Chip wireless telecommunications or cable transmission.
4. system according to claim 3, which is characterized in that the calculation processing platform includes acting device and man-machine interface,
The movement device is for receiving treated temperature and stress data signal, while to treated temperature and the stress data
Signal carries out operation, analysis, and operation, analysis result and received temperature and stress data signal are shown in man-machine interface.
5. system according to claim 4, which is characterized in that the calculation processing platform further includes memory, for storing
Analyze result and received temperature and stress-strain data；The movement device is also used to based on the analysis results, store with being stored in
Temperature and stress data threshold value in device are compared, if being below or above temperature and stress data threshold range, are carried out pre-
It is alert.
6. a kind of multichannel temperature and ess-strain On-line Measuring Method, which comprises the steps of:
The temperature and stress-strain data signal of the parts to be tested are acquired simultaneously；
The switching of the data acquisition of control data acquisition board, the temperature and stress for receiving the data acquisition board after corresponding switching simultaneously
Strain data, and the multichannel temperature and stress-strain data of acquisition are pre-processed；
Pretreated temperature and stress-strain data are analyzed, operation, judgement and early warning, and is sent out to data processing module
Control command is sent, so that the data processing module carries out the switch of data acquisition, switching to the data acquisition module.
7. according to the method described in claim 6, it is characterized in that, temperature and ess-strain described while that acquire the parts to be tested
It is also handled as follows after data-signal: the temperature and stress-strain data of acquisition is corrected, and will be after correction
Temperature and stress-strain data are transmitted to data processing module by corresponding data acquisition board；
It is also handled as follows before temperature that is described while acquiring the parts to be tested and stress-strain data signal: receiving calculation processing
The channel selection command of platform turns on or off corresponding Measurement channel.
8. method according to claim 7, which is characterized in that the switching of the data acquisition of the control data acquisition board, same
When receive the temperature and stress-strain data of the data acquisition board after corresponding switching, and the multichannel temperature and stress of acquisition are answered
Parameter is specifically included according to pretreated step is carried out:
Pass through the switching of the data acquisition of the corresponding data acquisition board of digital switch control；
AD conversion chip receives the temperature and stress data signal of the data acquisition board after corresponding switching, to the multi-pass of acquisition
The analog signal of temperature and stress data described in road is converted to digital information and is sent to MCU and handled；
Treated temperature and stress data signal are transmitted by driving chip wireless telecommunications or cable.
9. method according to claim 8, which is characterized in that described to be carried out to pretreated temperature and stress-strain data
Analysis, operation, judgement and early warning, and control command is sent to data processing module, so that the data processing module is to described
After data acquisition module carries out the switching of data acquisition further include:
The analysis result of operation, judgement and early warning and received temperature and stress data signal are shown in man-machine interface.
10. method according to claim 9, described to show analysis result and received temperature and stress data signal in people
Further include storing step behind machine interface: storing the analysis result and received temperature and stress data；
Described to analyze pretreated temperature and stress-strain data, operation, judgement and early warning further comprise: according to
Analysis with the temperature and stress data threshold value being stored in memory as a result, be compared, if below or above temperature and answering
Force data threshold range, carry out warning note, warning note include sound-light alarm and man-machine interface show real-time temperature with
Stress data.
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