CN109520640B - Moving target surface contact thermography device, system and method under vacuum low-temperature environment - Google Patents
Moving target surface contact thermography device, system and method under vacuum low-temperature environment Download PDFInfo
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- CN109520640B CN109520640B CN201811613784.XA CN201811613784A CN109520640B CN 109520640 B CN109520640 B CN 109520640B CN 201811613784 A CN201811613784 A CN 201811613784A CN 109520640 B CN109520640 B CN 109520640B
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- 238000001931 thermography Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000033001 locomotion Effects 0.000 claims abstract description 48
- 238000004088 simulation Methods 0.000 claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 238000005485 electric heating Methods 0.000 claims description 6
- 239000012774 insulation material Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 238000007726 management method Methods 0.000 description 14
- 238000009434 installation Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005094 computer simulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/04—Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies
- G01K13/08—Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies in rotary movement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/028—Means for indicating or recording specially adapted for thermometers arrangements for numerical indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
- G01K7/10—Arrangements for compensating for auxiliary variables, e.g. length of lead
- G01K7/12—Arrangements with respect to the cold junction, e.g. preventing influence of temperature of surrounding air
- G01K7/13—Circuits for cold-junction compensation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
- G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2219/00—Thermometers with dedicated analog to digital converters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The present invention relates to moving target surface contact thermography devices, systems, and methods under a kind of vacuum low-temperature environment, and wherein device includes: the multiple temperature sensors being set in vacuum tank internal motion target；Wireless acquisition terminal, it is set in vacuum tank internal motion simulation mechanism, and the wireless acquisition terminal is connect with the temperature sensor, for acquiring the signal of the multiple temperature sensor, temperature data is generated by analog-to-digital conversion, and is wirelessly sent；First antenna is installed on the vacuum tank internal motion simulation mechanism, connect with the wireless acquisition terminal, for sending the temperature data.The present invention obtains the real-time surface temperature measuring data of vacuum tank internal motion target in space environment simulation system using wireless transmission and receiving mode, compared with using backflow ring transmission data in the prior art, the stabilization and accurate delivery of temperature data have been ensured.
Description
Technical field
The present invention relates to moving targets under vacuum low-temperature environment analogue technique field more particularly to a kind of vacuum low-temperature environment
Surface contact thermography device, system and method.
Background technique
In vacuum low-temperature environment simulation system, measured target is typically installed at the movement analog machine inside vacuum tank
On structure.When carrying out simulation test, it usually needs the temperature on real-time measurement moving target surface.In the surface temperature to moving target
When spending contact measurement, due to target continuous rotation, in the prior art by the letter of temperature sensor usually by way of backflow ring
Number be transferred to outside container, but under vacuum low-temperature environment backflow ring performance it is difficult to ensure that data stabilization and accurate delivery.
It would therefore be highly desirable to provide moving target surface contact thermography device and method under a kind of vacuum low-temperature environment, temperature is improved
Spend the stability of data transfer.
Summary of the invention
It is an object of the invention to solve at least part technical problem in the prior art, a kind of vacuum and low temperature is provided
Moving target surface contact thermography device, system and method under environment can be realized by wireless data sending method for sky
Between moving target surface contact thermography under vacuum low-temperature environment in environmental simulation system.
In order to solve the above-mentioned technical problem, first aspect present invention provides moving target under a kind of vacuum low-temperature environment
Surface contact thermography device, described device include:
The multiple temperature sensors being set in vacuum tank internal motion target；
Wireless acquisition terminal is set in vacuum tank internal motion simulation mechanism, and the wireless acquisition terminal and institute
Temperature sensor connection is stated, for acquiring the signal of the multiple temperature sensor, temperature data is generated by analog-to-digital conversion, and
Wirelessly send；
First antenna is installed on the vacuum tank internal motion simulation mechanism, connect with the wireless acquisition terminal,
For sending the temperature data.
Under vacuum low-temperature environment according to the present invention in the contact thermography device of moving target surface, optionally, institute
Stating first antenna is two, is respectively arranged at movement simulation mechanism two sides in 180 ° of angles, the interior setting of the wireless acquisition terminal
There is antenna synthesizer.
Under vacuum low-temperature environment according to the present invention in the contact thermography device of moving target surface, optionally, institute
Stating movement simulation mechanism includes floral disc；Moving target surface contact thermography device under the vacuum low-temperature environment further include: antenna
Switching tooling, the antenna switching tooling include the floral disc fixed part and antenna mounting portion in the setting of 90 ° of angles；The floral disc is solid
Portion is determined equipped with two parallel mounting grooves, for being fixed on the floral disc rim under surface by connector；The antenna peace
Dress portion extends downwardly, and is equipped with antenna socket mounting hole for installing the first antenna.
Under vacuum low-temperature environment according to the present invention in the contact thermography device of moving target surface, optionally, institute
It states wireless acquisition terminal and is installed on the floral disc inner hub location, and the floral disc internal edge is along the circumferential direction uniformly arranged
There is clump weight.
Under vacuum low-temperature environment according to the present invention in the contact thermography device of moving target surface, optionally, institute
Stating wireless acquisition terminal includes: inner housing, outer housing, the circuit board and battery for being encapsulated within enclosure interior, and is arranged in institute
State the electric heating film and thermal insulation material between inner housing and outer housing；The wireless acquisition terminal further includes being set to the inner casing
The temperature sensor in body surface face, and the temperature detecting module and heating control module that are packaged in the inner housing, the temperature
Degree detection module is compared by the real time temperature that temperature sensor acquires with preset value, and power supply control instruction is generated；It is described
Heating control module receives the power supply control instruction of the temperature detecting module, completes power source supplying voltage control, power supply is supplied
Piezoelectric voltage is exported to electric heating film.
Under vacuum low-temperature environment according to the present invention in the contact thermography device of moving target surface, optionally, institute
It states floral disc side and opens multiple waist type groove outlet holes, for drawing the power supply line of the wireless acquisition terminal.
Under vacuum low-temperature environment according to the present invention in the contact thermography device of moving target surface, optionally, institute
Stating wireless acquisition terminal includes: main control unit, storage unit, AD conversion unit and wireless data transmission module and multiple groups Constant Electric Current
Press Acquisition Circuit, cold junction compensation circuit, gain amplifying circuit, filter circuit and converter；The temperature sensor of thermocouple is believed
Number by cold junction compensation circuit carry out cold end amendment after be sent to gain amplifying circuit, the temperature sensor signal of thermal resistance is through perseverance
Galvanic electricity die block is sent to gain amplifying circuit after carrying out signal adaptation, and the gain amplifying circuit may amplify the signal to AD conversion
Suitable input voltage, then send after the filter circuit to converter；The converter converts analog signals into number
After word signal, under the control of main control unit, data are put on internal bus by bus interface；The main control unit is from total
After obtaining AD conversion data on line, by communications protocol, data are issued by wireless data transmission module.
Under vacuum low-temperature environment according to the present invention in the contact thermography device of moving target surface, optionally, institute
State wireless acquisition terminal further include:
Power management module, the power management module are connect with outer brush, receive DC adapter power supply；
Rechargeable battery is connect with the power management module, is controlled by the power management module and is realized that charging is automatic
Switching；
Change of current module is connect with the power management module, for instructing output services according to the power management module
Voltage is each circuit power supply in wireless acquisition terminal.
Under vacuum low-temperature environment according to the present invention in the contact thermography device of moving target surface, optionally, institute
It states power management module and is connect with the control device for moving simulation mechanism, move simulation mechanism status signal for receiving, and
When movement simulation mechanism is kept in motion, outer brush stops power supply, and switching provides operating voltage by rechargeable battery.
Second aspect of the present invention additionally provides moving target surface contact thermography system under a kind of vacuum low-temperature environment, packet
It includes:
Moving target surface contact thermography device under foregoing vacuum low-temperature environment；
Second antenna is installed on the inner wall of the vacuum tank, and its cable passes through crossing cabin connector and vacuum tank
External control devices connection；
External control devices, for receiving and storing the temperature data of each temperature sensor.
Under vacuum low-temperature environment according to the present invention in the contact thermography system of moving target surface, optionally, institute
State system further include: antenna fixing stand, including hollow the first extension rod and the second extension rod, and first extension rod
Outer diameter is greater than the outer diameter of second extension rod；The first end of first extension rod and the fixed company of the flange of crossing cabin connector
It connects, second end is connect with second extension rod, and second antenna is fixed on the second extension rod, and outside second antenna
Portion is coated with insulating layer；The cable of second antenna passes through the channel cabling of the first extension rod and the second extension rod inner hollow
To the outside of vacuum tank.
Under vacuum low-temperature environment according to the present invention in the contact thermography system of moving target surface, optionally, institute
It states external control devices and sends starting recording instruction to the wireless acquisition terminal；The wireless acquisition terminal receives starting record
After instruction, with preset frequency by collected temperature data by radioing to the external control devices, and from first
A data start to add relative time code；After the external control devices receive the temperature data of wireless acquisition terminal, for
Each frame data are stored according to relative time code calculating absolute time code and after being added in the frame data.
Third aspect present invention additionally provides a kind of moving target surface contact thermography method under vacuum low-temperature environment, institute
The method of stating includes:
Signal is acquired by the multiple temperature sensors being set in vacuum tank internal motion target；
Wireless acquisition terminal in vacuum tank internal motion simulation mechanism is set to by the multiple temperature sensor
Signal is converted into the temperature data of number, and is uploaded by wireless communication module；
By be installed on the vacuum tank internal motion simulation mechanism and connect with the wireless acquisition terminal
One antenna sends temperature data；
The second antenna on inner wall by being installed on the vacuum tank receives temperature data, the cable of second antenna
It is connected by the external control devices of crossing cabin connector and vacuum tank；
External control devices receive and store the temperature data of each temperature sensor.
Under vacuum low-temperature environment according to the present invention in the contact thermography method of moving target surface, optionally, institute
It states external control devices in method and passes through following steps reception temperature data:
The external control devices send starting recording instruction to the wireless acquisition terminal；
After the wireless acquisition terminal receives starting recording instruction, collected temperature data is passed through by nothing with preset frequency
Line is transferred to the external control devices, and relative time code is added since first data；
After the external control devices receive the temperature data of wireless acquisition terminal, for each frame data, according to phase
It is stored to timing code calculating absolute time code and after being added in the frame data.
Implement moving target surface contact thermography devices, systems, and methods under vacuum low-temperature environment of the invention, have with
It is lower the utility model has the advantages that
1, the present invention obtains the real time temperature measurement of vacuum tank internal motion target using wireless transmission and receiving mode
Data have ensured the stabilization and accurate delivery of data compared with using backflow ring transmission data in the prior art.
2, the present invention is solved by being in 180 ° of arrangements, two first antennas in the two sides of movement simulation mechanism because moving mould
Antenna occlusion problem caused by the rotation of quasi- mechanism 2 makes equipment keep wireless telecommunications smooth.
3, the antenna socket of first antenna is mounted on antenna switching tooling by the present invention, then is fixed on fortune using connector
Dynamic simulation mechanism lower surface, can make full use of floral disc bottom space, while making the installation of first antenna more firm, effectively
Antenna is avoided to fall off in floral disc rotary course.
4, wireless acquisition terminal is being installed on floral disc inner hub location by the present invention, and floral disc internal edge is circumferentially square
To clump weight is evenly arranged with, it can ensure that the wireless acquisition terminal added in floral disc will not influence the flat of movement simulation mechanism
Weighing apparatus.
5, the present invention ensures the work of terminal by heating and thermal insulation material by carrying out temperature control design to wireless acquisition terminal
Make temperature, the low temperature environment of simulation system can be adapted to.
6, large capacity rechargeable battery is set in wireless acquisition terminal of the invention, and when moving simulation mechanism movement,
It is powered by rechargeable battery and ensures the stable power-supplying of wireless acquisition terminal, this uninterrupted power supply design is solved because backflow ring connects
Touch bad caused power failure problem.
7, the present invention passes through the design of two elongated segment bars, avoids the heat sink structure of vacuum tank surface covering for second
Antenna blocks, and has ensured the stability of wireless signal transmission.
Detailed description of the invention
Fig. 1 is the original according to moving target surface contact thermography device under the vacuum low-temperature environment of the preferred embodiment of the present invention
Reason figure；
Fig. 2 is the peace according to moving target surface contact thermography device under the vacuum low-temperature environment of the preferred embodiment of the present invention
Holding position schematic diagram；
Fig. 3 a-3c is respectively moving target surface contact thermography under vacuum low-temperature environment according to the preferred embodiment of the invention
The main view of antenna switching tooling, right view and bottom view in device；
Fig. 4 a-4b is respectively moving target surface contact thermography under vacuum low-temperature environment according to the preferred embodiment of the invention
The side view and top view that first antenna is installed in device；
Fig. 5 a-5b is respectively moving target surface contact thermography under vacuum low-temperature environment according to the preferred embodiment of the invention
The installation site top view and diagrammatic cross-section of wireless acquisition terminal in device；
Fig. 6 is respectively moving target surface contact thermography device under vacuum low-temperature environment according to the preferred embodiment of the invention
The schematic diagram of internal structure of middle wireless acquisition terminal；
Fig. 7 is respectively moving target surface contact thermography device under vacuum low-temperature environment according to the preferred embodiment of the invention
The circuit diagram of middle wireless acquisition terminal；
Fig. 8 is respectively moving target surface contact thermography system under vacuum low-temperature environment according to the preferred embodiment of the invention
In the second antenna scheme of installation；
Fig. 9 is that Quasi dynamic data pass in the contact thermography system of moving target surface under vacuum low-temperature environment according to the present invention
Send flow chart.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below, in order to make mesh of the invention
, technical solution and advantage be more clearly understood, with reference to the accompanying drawings and embodiments, the present invention is further retouched in detail
It states.It should be understood that specific embodiment described herein is only configured to explain the present invention, it is not configured as limiting the present invention.
To those skilled in the art, the present invention can be real in the case where not needing some details in these details
It applies.Below the description of embodiment is used for the purpose of better understanding the present invention to provide by showing example of the invention.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence " including ... ", it is not excluded that including
There is also other identical elements in the process, method, article or equipment of the element.
Fig. 1 and Fig. 2 are please referred to, moving target under vacuum low-temperature environment respectively according to the preferred embodiment of the invention
The schematic diagram and schematic view of the mounting position of surface contact thermography device.As shown, moving target table under the vacuum low-temperature environment
Face contact temperature measuring equipment includes at least: multiple temperature sensors 10, wireless acquisition terminal 20 and first antenna 30.
Wherein, multiple temperature sensors 10 are set in 1 internal motion target 3 of vacuum tank.Preferably, the vacuum tank
1 can be spherical vacuum tank body.Moving target 3 is mounted on movement simulation mechanism 2, is driven and is carried out certainly by movement simulation mechanism 2
Three rotation, pitching and yaw dimensions move.Temperature sensor 10 can be thermocouple or thermal resistance.Preferably, temperature sensing
Device 10 is distributed in the axis of moving target 3, on feature locations, is suitable for three-dimensional motion of the moving target 3 on motion simulator.
Wireless acquisition terminal 20 is set in 1 internal motion simulation mechanism 2 of vacuum tank, and wireless acquisition terminal 20 and institute
It states multiple temperature sensors 10 to connect, for acquiring the signal of the multiple temperature sensor, temperature is generated by analog-to-digital conversion
Data, and wirelessly send.The wireless acquisition terminal 20 is that moving target surface contacts under entire vacuum low-temperature environment
The core of temperature measuring equipment completes the conversion of sensor signal and the sending function of result data.
First antenna 30 is installed on 1 internal motion simulation mechanism 2 of vacuum tank, is connect with wireless acquisition terminal 20, is used
In the transmission temperature data.
The present invention is transmitted using wireless wifi data by above-mentioned apparatus, is realized and connect to the surface temperature of moving target
Touching measurement and data transmission.
Correspondingly, this is the present invention also provides moving target surface contact thermography system under a kind of vacuum low-temperature environment
System is including moving target surface contact thermography device under heretofore described vacuum low-temperature environment and the second antenna 40 and outside
Portion controls equipment.
Wherein, the second antenna 40 is installed on the inner wall of vacuum tank 1, and its cable passes through crossing cabin connector and external control
Control equipment connection.External control devices are located at the outside of vacuum tank 1, for receiving and storing the temperature of each temperature sensor
Data.Preferably, external control devices include ground installation 50 and monitoring computer 60.Wherein ground installation 50 is responsible for monitoring meter
Connection between calculation machine 60 and wireless acquisition terminal 20 will monitor the instruction that computer 60 issues and deliver wireless acquisition terminal 20,
And the information and temperature data uploading for returning to wireless acquisition terminal 20 give monitoring computer 60.
It monitors computer 60 and is used for storage temperature data.The monitoring computer 60 can be used for installing control software, at data
Reason software and corresponding communication driver are responsible for human-computer interaction, measurement controls, data receiver controls, data store, at data
The functions such as reason.
Since the device of the invention work is in closed vacuum tank, needs to realize the wireless telecommunications of equipment, will acquire
To temperature data be real-time transmitted on the external control devices 50 outside vacuum tank, due to installation site and rotary work mode
Limitation, device antenna has been possible to block, it is possible to the problem for causing wireless telecommunications unsmooth.It is asked to solve this
Topic, in the present invention more preferably embodiment, first antenna 30 is two, is respectively arranged at movement simulation mechanism two sides in 180 °
Angle.Wireless acquisition terminal 20 increases antenna synthesizer in wireless transmission part.The structure setting effective solution is because of fortune
Antenna occlusion problem caused by the rotation of dynamic simulation mechanism 2 makes equipment keep wireless telecommunications smooth.
Fig. 3 a-3c is please referred to, moving target under vacuum low-temperature environment respectively according to the preferred embodiment of the invention
Main view, right view and the bottom view of antenna switching tooling in the contact thermography device of surface.Fig. 4 a and 4b are respectively according to this hair
Under the vacuum low-temperature environment of bright preferred embodiment in the contact thermography device of moving target surface first antenna install side view and
Top view.Wherein movement simulation mechanism 2 includes floral disc 4.Moving target surface contact thermography device is also under the vacuum low-temperature environment
It include: antenna switching tooling 5.The antenna switching tooling 5 includes the floral disc fixed part 51 and antenna mounting portion in the setting of 90 ° of angles
52.Wherein floral disc fixed part 51 is equipped with two parallel mounting grooves 54, for being fixed under the edge of floral disc 4 by connector
Surface.Antenna mounting portion 52 then extends downwardly, and is equipped with antenna socket mounting hole 53 for installing first antenna 30.Specifically,
The antenna socket 31 of two first antennas 30 is fixed on 4 lower surface of floral disc by respective antenna switching tooling 5, and two first
Antenna 30 is distributed in 180 degree on the lower surface.Since installation space limits, the present invention pacifies the antenna socket 31 of first antenna 30
4 lower surface of floral disc, first antenna are fixed on antenna switching tooling 5, then using two connector such as soket head cap screws
30 tip can also be bent upwards.The design can make full use of floral disc bottom space, while make the peace of first antenna 30
Dress is more firm, effectively prevents antenna and falls off in 4 rotary course of floral disc.
Fig. 5 a-5b is please referred to, moving target under vacuum low-temperature environment respectively according to the preferred embodiment of the invention
The installation site top view and diagrammatic cross-section of wireless acquisition terminal in the contact thermography device of surface.Preferably, the wireless collection
Terminal 20 is installed on 4 inner hub location of floral disc, and 4 internal edge of floral disc is along the circumferential direction evenly arranged with clump weight 6, such as
It is evenly arranged by 4 clump weights 6.By the design of the clump weight, the present invention can ensure the wireless collection added in floral disc 4
Terminal 20 will not influence the balance of movement simulation mechanism 2.
Fig. 6 is please referred to, moving target surface under vacuum low-temperature environment respectively according to the preferred embodiment of the invention
The schematic diagram of internal structure of wireless acquisition terminal in contact thermography device.Preferably, the structure of the wireless acquisition terminal 20 includes:
Inner housing 21, outer housing 22, the circuit board and battery being encapsulated within inside shell 21, and it is set to inner housing 21 and outer housing
Electric heating film 23 and thermal insulation material 24 between 22.Wireless acquisition terminal 20 further includes the terminal temperature for being set to 21 surface of inner housing
Spend sensor 25, and the temperature detecting module 26 and heating control module 27 that are encapsulated in shell 21, temperature detecting module
26 are compared by the real time temperature that terminal temperature sensor 26 acquires with preset value, and power supply control instruction is generated；Heating control
Molding block 27 receives the power supply control instruction of temperature detecting module 26, power source supplying voltage control is completed, by power source supplying voltage
It exports to electric heating film 23.At a lower temperature due to the work of wireless acquisition terminal 20, and actual work temperature can exceed that device
The tolerable temperature of part and battery, therefore, the present invention ensure terminal by carrying out temperature control design to wireless acquisition terminal, by heating
Operating temperature.Wherein terminal temperature sensor 26 can be realized using RTC temperature-sensitive resistor, pass through inductive reactance both ends
Voltage temperature measured.Further, the heat that equipment itself distributes in order to prevent in the terminal device course of work
Other equipment work are influenced, one layer of thermal insulation material for preventing heat from distributing 24, the thermal insulating material are wrapped outside equipment inner housing 21
The preferably PEVA high-foaming heat-barrier material of material 24, can effectively completely cut off heat transmission.
Fig. 7 is please referred to, moving target surface under vacuum low-temperature environment respectively according to the preferred embodiment of the invention
The circuit diagram of wireless acquisition terminal in contact thermography device.Preferably, which includes: main control unit
201, storage unit 202, AD conversion unit 203 and wireless data transmission module 204 and multiple groups constant current voltage collection circuit 205, cold
End compensating circuit 206, gain amplifying circuit 207, filter circuit 208 and converter 209.Preferably, filter circuit 208 is low
Bandpass filter circuit.Wherein, the temperature sensor signal of thermocouple is sent to after cold junction compensation circuit 206 carries out cold end amendment
The temperature sensor signal of gain amplifying circuit 207, thermal resistance is sent to increasing after constant current voltage module 205 carries out signal adaptation
Beneficial amplifying circuit 207, gain amplifying circuit 207 may amplify the signal to the suitable input voltage of AD conversion, then after filter circuit
It send to converter 203.After converter 203 converts analog signals into digital signal, under the control of main control unit 201,
Data are put on internal bus by bus interface.After main control unit 201 obtains AD conversion data from bus, by communication association
View issues data by wireless data transmission module 204.
In preferred embodiment of the invention, the wireless acquisition terminal 20 further include: power management module 210 can fill
Battery 211 and change of current module 212.
Wherein power management module 210 is connect with outer brush 213, receives DC adapter power supply.Rechargeable battery 211
It is connect with power management module 210, is controlled by power management module 210 and realize that charging is automatically switched.Change of current module 212 and power supply
Management module 210 connects, and is each circuit in wireless acquisition terminal 20 for instructing output services voltage according to power management module
Power supply.Built-in high capacity cell in wireless acquisition terminal 20 of the invention, can power for a long time.Both it can be powered with battery, it can also
With external power supply, two kinds of power supply seamless switchings, caused by this uninterrupted power supply design is solved because of backflow ring poor contact
Power failure problem.It is highly preferred that power management module 210 is also connect with the control device of movement simulation mechanism 2, for receiving
Simulation mechanism status signal is moved, and when movement simulation mechanism is kept in motion, outer brush 213 stops power supply, switching
Operating voltage is provided by rechargeable battery 211.Therefore the present invention can be when moving the movement of simulation mechanism 2, and brush stops power supply,
It is powered by rechargeable battery 211 and ensures the stable power-supplying of wireless acquisition terminal 20.Preferably, the present invention can be in movement analog machine
Multiple waist type groove outlet holes are opened in 4 side of floral disc of structure 2, for drawing the power supply line of wireless acquisition terminal 20.
Fig. 8 is please referred to, moving target surface under vacuum low-temperature environment respectively according to the preferred embodiment of the invention
The scheme of installation of second antenna in contact thermography system.Preferably, system further include: antenna fixing stand.
Antenna fixing stand includes hollow the first extension rod 81 and the second extension rod 82, and the outer diameter of the first extension rod 81
Greater than the outer diameter of the second extension rod 82.The first end of first extension rod 81 is fixedly connected with the ring flange 7 of crossing cabin connector, and second
End is connect with the second extension rod 81, and the second antenna 40 is fixed on the second extension rod 82, and is coated with outside the second antenna 40 absolutely
Edge layer 83, the cable of the second antenna 40 pass through the channel cabling of 82 inner hollow of the first extension rod 81 and the second extension rod to vacuum
The outside of tank body 1.Since the second antenna 40 will receive the wireless signal in vacuum tank 1, so the present invention passes through two elongated segments
The design of bar avoids heat sink structure the blocking for antenna of 1 surface of vacuum tank covering.It is highly preferred that in vacuum tank 1
Outer wall on, by the stud extender that the ring flange 7 and floral disc of crossing cabin connector are fixed, and stretch out floral disc part in bolt and install one additional
The fixing card of fixed cable, stud base are locked with nut.In this way, neither influencing the fixation of ring flange and floral disc, can also make
The cable of second antenna 40 has reliable fixation, to avoid causing antenna most since the second antenna 40 is fixed inconvenient
It is hidden in inside ring flange 7, has ensured the stability of wireless signal transmission.
Referring to Fig. 9, to be quasi- dynamic in moving target surface contact thermography system under vacuum low-temperature environment according to the present invention
State data transmission process figure.
Wherein, in step S901, external control devices send starting recording instruction to wireless acquisition terminal 20.
In step S902, after wireless acquisition terminal 20 receives starting recording instruction, with preset frequency by collected temperature
Degree evidence adds relative time code by radioing to the external control devices since first data.
In step S903, after external control devices receive the temperature data of wireless acquisition terminal, for each frame number
According to calculating absolute time code according to relative time code and stored after being added in the frame data.
It can be seen that the present invention devises local large capacity cache, can real-time storage measurement temperature data, realize standard
Dynamic measurement.
The present invention further correspondingly provides a kind of moving target surface contact thermography method under vacuum low-temperature environment, and this method can
To be realized based on moving target surface contact thermography system under aforementioned vacuum low temperature environment.Method includes the following steps:
1) signal is acquired by the multiple temperature sensors being set in vacuum tank internal motion target；
2) wireless acquisition terminal in vacuum tank internal motion simulation mechanism is set to by the multiple temperature sensor
Signal be converted into number temperature data, and by wireless communication module upload；
3) by being installed on the vacuum tank internal motion simulation mechanism and being connect with the wireless acquisition terminal
First antenna sends temperature data；
4) the second antenna on the inner wall by being installed on the vacuum tank receives temperature data, the line of second antenna
Cable is connected by the external control devices of crossing cabin connector and vacuum tank；
5) external control devices receive and store the temperature data of each temperature sensor.
Said external control equipment can receive temperature data by way of foregoing Quasi dynamic.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (5)
1. moving target surface contact thermography system under a kind of vacuum low-temperature environment, which is characterized in that the system comprises:
The multiple temperature sensors being set in vacuum tank internal motion target；
Wireless acquisition terminal is set in vacuum tank internal motion simulation mechanism, and the wireless acquisition terminal and the temperature
Sensor connection is spent, for acquiring the signal of the multiple temperature sensor, temperature data is generated by analog-to-digital conversion, and pass through
Wireless mode is sent；
First antenna is installed on the vacuum tank internal motion simulation mechanism, connect, be used for the wireless acquisition terminal
Send the temperature data；
Second antenna is installed on the inner wall of the vacuum tank, and its cable passes through the outer of crossing cabin connector and vacuum tank
Portion controls equipment connection；
External control devices, for receiving and storing the temperature data of each temperature sensor；
The first antenna is two, is respectively arranged at movement simulation mechanism two sides in 180 ° of angles, the wireless acquisition terminal
Inside it is provided with antenna synthesizer；
The movement simulation mechanism includes floral disc；
Moving target surface contact thermography system under the vacuum low-temperature environment further include: antenna switching tooling, the antenna turn
Connecing tooling includes the floral disc fixed part and antenna mounting portion in the setting of 90 ° of angles；The floral disc fixed part is equipped with two in parallel
Mounting groove, for being fixed on the floral disc rim under surface by connector；The antenna mounting portion extends downwardly, and is equipped with
Antenna socket mounting hole is for installing the first antenna；
The wireless acquisition terminal is installed on the floral disc inner hub location, and the floral disc internal edge is along the circumferential direction equal
It is even to be provided with clump weight；
Multiple waist type groove outlet holes are opened in the floral disc side, for drawing the power supply line of the wireless acquisition terminal；
The wireless acquisition terminal includes: inner housing, outer housing, the circuit board and battery for being encapsulated within enclosure interior, Yi Jishe
Set the electric heating film and thermal insulation material between the inner housing and outer housing；The wireless acquisition terminal further includes being set to institute
The temperature sensor of interior shell surface is stated, and the temperature detecting module and heating control module that are packaged in the inner housing,
The temperature detecting module is compared by the real time temperature that temperature sensor acquires with preset value, is generated power supply control and is referred to
It enables；The heating control module receives the power supply control instruction of the temperature detecting module, completes power source supplying voltage control, will
Power source supplying voltage is exported to electric heating film；
The wireless acquisition terminal further include:
Power management module, the power management module are connect with outer brush, receive DC adapter power supply；The power supply pipe
Reason module is connect with the control device for moving simulation mechanism, is simulated for receiving movement simulation mechanism status signal, and in movement
When mechanism is kept in motion, outer brush stops power supply, and switching provides operating voltage by rechargeable battery；
Rechargeable battery is connect with the power management module, is controlled by the power management module and is realized that charging is automatically switched；
Change of current module is connect with the power management module, for instructing output services voltage according to the power management module
For circuit each in wireless acquisition terminal power supply.
2. moving target surface contact thermography system under vacuum low-temperature environment according to claim 1, which is characterized in that institute
Stating wireless acquisition terminal includes: main control unit, storage unit, AD conversion unit and wireless data transmission module and multiple groups Constant Electric Current
Press Acquisition Circuit, cold junction compensation circuit, gain amplifying circuit, filter circuit and converter；The temperature sensor of thermocouple is believed
Number by cold junction compensation circuit carry out cold end amendment after be sent to gain amplifying circuit, the temperature sensor signal of thermal resistance is through perseverance
Galvanic electricity die block is sent to gain amplifying circuit after carrying out signal adaptation, and the gain amplifying circuit may amplify the signal to AD conversion
Suitable input voltage, then send after the filter circuit to converter；The converter converts analog signals into number
After word signal, under the control of main control unit, data are put on internal bus by bus interface；The main control unit is from total
After obtaining AD conversion data on line, by communications protocol, data are issued by wireless data transmission module.
3. moving target surface contact thermography system under vacuum low-temperature environment according to claim 1, which is characterized in that institute
State system further include:
Antenna fixing stand, including hollow the first extension rod and the second extension rod, and the outer diameter of first extension rod is greater than
The outer diameter of second extension rod；The first end of first extension rod is fixedly connected with the flange of crossing cabin connector, second end
It is connect with second extension rod, second antenna is fixed on the second extension rod, and is coated with outside second antenna
Insulating layer；The cable of second antenna passes through the channel cabling of the first extension rod and the second extension rod inner hollow to vacuum tank
The outside of body.
4. moving target surface contact thermography system under vacuum low-temperature environment according to claim 1, it is characterised in that:
The external control devices send starting recording instruction to the wireless acquisition terminal；
After the wireless acquisition terminal receives starting recording instruction, with preset frequency by collected temperature data by wirelessly passing
The external control devices are defeated by, and add relative time code since first data；
After the external control devices receive the temperature data of wireless acquisition terminal, for each frame data, according to it is opposite when
Between code calculate absolute time code and stored after being added in the frame data.
5. a kind of moving target surface contact thermography method under vacuum low-temperature environment, which is characterized in that using described in claim 1
Vacuum low-temperature environment under moving target surface contact thermography system realize, which comprises
Signal is acquired by the multiple temperature sensors being set in vacuum tank internal motion target；
Wireless acquisition terminal in vacuum tank internal motion simulation mechanism is set to by the signal of the multiple temperature sensor
It is converted into the temperature data of number, and is uploaded by wireless communication module；
By first day for being installed on the vacuum tank internal motion simulation mechanism and being connect with the wireless acquisition terminal
Line sends temperature data；
The second antenna on inner wall by being installed on the vacuum tank receives temperature data, and the cable of second antenna passes through
The connection of the external control devices of crossing cabin connector and vacuum tank；
External control devices receive and store the temperature data of each temperature sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811613784.XA CN109520640B (en) | 2018-12-27 | 2018-12-27 | Moving target surface contact thermography device, system and method under vacuum low-temperature environment |
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|---|---|---|---|
| CN201811613784.XA CN109520640B (en) | 2018-12-27 | 2018-12-27 | Moving target surface contact thermography device, system and method under vacuum low-temperature environment |
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