CN108548609A - A kind of temperature measuring label - Google Patents
A kind of temperature measuring label Download PDFInfo
- Publication number
- CN108548609A CN108548609A CN201810220523.5A CN201810220523A CN108548609A CN 108548609 A CN108548609 A CN 108548609A CN 201810220523 A CN201810220523 A CN 201810220523A CN 108548609 A CN108548609 A CN 108548609A
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- Prior art keywords
- label
- temperature
- temperature measuring
- measuring
- ultrasonic
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- 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
- G01K7/18—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 linear resistance, e.g. platinum resistance thermometer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/22—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The present invention provides a kind of temperature measuring label, including label substrate, tag reflection coating, heat-conducting filler, label adhered layer；The label substrate is flake, is made of porous ceramics, for absorbing and reflecting ultrasonic wave；The heat-conducting filler is filled in the porous ceramics internal clearance, is used for heat conduction between measuring point and the porous ceramics；External ultrasound temperature measuring equipment emits ultrasonic pulse string to label substrate, the envelope damping time constant of label substrate reflected impulse string is related to temperature, damping time constant by measuring ultrasonic echo can obtain substrate temperature, and then obtain measuring point temperature, this measurement label is particularly suitable for high precision and large measuring range range non-cpntact measurement moving object temperature, hand-held multiple spot inspection thermometric, there was only acoustic signal contact between measuring point label and temperature-detecting device, measuring device has good electromagnetism anti-interference ability and electric insulation safety, label has good maintainability without power supply.
Description
Technical field
The present invention relates to wireless temperature technical field of non-contact measurement, and in particular to a kind of temperature measuring label.
Background technology
Wireless temperature measurement is in rows such as medicine, Food Cold Chain Logistics, storage, wisdom agricultural, smart city, industrial automation monitoring
For industry using increasingly extensive, accurate quick low cost obtains measuring point temperature for ensureing production process control, ensures product matter
It is particularly significant to improve people's living standard etc. for amount, timely discovering device failure.
Currently, common wireless temperature measurement method surface acoustic wave temperature measuring label, RFID temperature measuring labels, optical fiber temperature-measurement, infrared survey
Temperature, thermometric wax disk(-sc) etc., infrared measurement of temperature are influenced very greatly by body surface radiation characteristic, and surface acoustic wave and RFID tag pass through height
Frequency pulse excitation label, object temperature modulate the surface acoustic wave or radio-frequency antenna characteristic of label, detect the high frequency arteries and veins of return
Punching response can know that the temperature at label attachment, traditional optical fiber temperature-measurement are influenced very big, survey by cross-ventilation, surface dirt etc.
Warm wax disk(-sc) is far not achieved mainly by visual estimation, temperature measurement accuracy, measurement range and the stability of above-mentioned several wireless temperature measurement modes
The performance of wired thermometric such as platinum resistance, some wireless temperature measurement probes need self-contained battery or electrical couplings to obtain electric energy, this limit
Maintenance difficulties are improved in application scenario processed.
Therefore, it is necessary to introduce new measurement method, the simplicity of wireless temperature measurement is kept, temperature measurement accuracy is improved, measures model
It encloses and adverse circumstances resistivity.
Invention content
In order to solve the above-mentioned technical problem, the purpose of the present invention is to provide a kind of temperature measuring labels.
The present invention is achieved by the following technical solutions：
A kind of temperature measuring label, including：Label substrate, tag reflection coating, heat-conducting filler, label adhered layer.
The label substrate is flake, is made of porous ceramics, for absorbing and reflecting ultrasonic wave；
The heat-conducting filler is filled in the porous ceramics internal clearance, for being led between measuring point and the porous ceramics
Heat；
The tag reflection coating covering seals a side surface of the label substrate, for reflecting ultrasonic wave；
The label adhered layer is set to another side surface of the label substrate, for the temperature measuring label to be attached to
On measuring point；
Sealing structure is integrally formed in label substrate border coating adhesive, the temperature measuring label.
Further, the porous ceramics is reticulated porous structures, and the mesh structural porous internal voids intercommunication is super to outside
Wave absorption ability is related to temperature, and influence of the temperature to absorbability is very sensitive, for absorbing and reflecting ultrasonic wave.
Further, the heat-conducting filler uses heat-conducting silicone grease.
Further, the tag reflection coating uses high intensity ultraviolet solidification glue, ensures the wave envelope of reflection signal
Amplitude strength and stability.
A kind of temperature label wireless temperature measuring device, including temperature measuring label and ultrasonic temperature measuring instrument；
The ultrasonic temperature measuring instrument includes circuit module and shell；
The circuit module includes microcontroller, ultrasonic drive circuit, ultrasonic transmitter, ultrasonic receiver, ultrasound
Wave detection process circuit, memory module and power module；
The microcontroller by pcb board respectively with the ultrasonic drive circuit, the ultrasound examination processing circuit, institute
Memory module is stated to connect with the power module；The ultrasonic drive circuit is electrically connected with the ultrasonic transmitter；It is described
Ultrasonic receiver is electrically connected with the ultrasound examination processing circuit；
The circuit module is mounted in the shell；
The temperature measuring label is mounted on the surface of dut temperature point；
The ultrasonic temperature measuring instrument is hand-held or is mounted on and the matched ultrasonic wave transmitting of the temperature measuring label, receiving
In range.
Further, the temperature measuring label and the ultrasonic temperature measuring instrument are non-contacting.
Further, the ultrasonic temperature measuring instrument further includes input module and display module, the input module
It is connect respectively with the microcontroller with the display module.
Further, the circuit module further includes temperature sensor, the temperature sensor and the ultrasound examination
Processing circuit connects, for measuring the enclosure interior environment temperature.
Further, the ultrasonic temperature measuring instrument further includes wire communication module and/or wireless communication module, is used
It is transferred on computer in by temperature measuring data.
A kind of temperature label wireless temperature measurement method, the ultrasonic transmitter emit ultrasonic pulse string through the thermometric mark
After label reflection, the envelope of reflected wave pulses string is exponentially decayed, and handles to obtain ultrasonic pulse string packet through the circuit module
The damping time constant of winding thread, that there are correspondences is linear for the damping time constant and temperature, by measuring described decline
Subtract time constant and obtains measured point temperature.
Further, a kind of temperature label wireless temperature measurement method includes the following steps：
S1, the microcontroller control the ultrasonic transmitter to the temperature measuring label by the ultrasonic drive circuit
It is periodically sent out ultrasonic pulse string signal, the ultrasonic pulse string signal is reflected through the temperature measuring label, the ultrasound of reflection
Wave signal is received through the ultrasonic receiver；
S2, the ultrasonic receiver received signal are converted into electric signal through the ultrasound examination processing circuit and put
Big filtering and digitized processing obtain ultrasonic pulse string envelope；
S3, the microcontroller calculate the damping time constant of current ultrasonic pulse string envelope；
S4, temperature measurement range internal standard constant temperature degree and the ultrasonic pulse string envelope damping time constant pair
It should be related to and be solidificated in inside the circuit module；
S5, the microcontroller the declining by ultrasonic pulse string envelope current described in S3 according to the correspondence
Subtract time constant and calculates corresponding dut temperature.
Further, which is characterized in that the microcontroller measures starting point and knot according to the ultrasonic pulse string envelope
The difference of spot amplitude, automatically adjust ultrasonic pulse string emissive porwer so that train of pulse receive signal envelope measure starting point and
End point difference in magnitude substantially constant improves envelope die-away time extension consistency.
The temperature measuring label is made of ultrasonic wave temperature sensing material porous ceramics, and the temperature measuring label experiences measured point temperature
Degree, the damping time constant and measured point temperature of the ultrasonic pulse string envelope that the temperature measuring label reflects under ultrasonic irradiation
There are correspondences for degree.
Compared with prior art, the present invention has the advantages that：
1. long-time stability, ultrasonic pulse string irradiates temperature measuring label and generates reflection, and ultrasonic pulse string envelope declines
Subtract time constant to be determined by ultrasonic wave temperature sensing material porous ceramics physical characteristic with measuring point temperature relation, and ultrasonic wave temperature sensing material
The physical characteristic of porous ceramics is stable within the long duration, it ensure that the long-time stability of measurement data.
2. temperature-measuring range is wide, different ultrasonic wave temperature sensing material porous ceramics has respective optimum temperature sensitivity interval, with
And occasion is adapted to accordingly, the wired thermometric temperature range of platinum resistance is covered, is more than the temperature that traditional wireless temperature measurement method is applicable in
Range.
3. convenient for installation and maintenance, temperature measuring label is not necessarily to power supply as temperature measuring head, easy for installation, has good maintainability.
Description of the drawings
Fig. 1 is temperature measuring label structural schematic diagram of the present invention；
Fig. 2 is temperature label wireless temperature measuring device structural schematic diagram of the present invention；
Fig. 3 is ultrasonic measurement schematic diagram of the present invention；
Fig. 4 is fire bursts provided in an embodiment of the present invention, ultrasonic pulse string envelope waveform diagram.
Specific implementation mode
Elaborate below to the embodiment of the present invention, the present embodiment with the technical scheme is that according to development,
Give detailed embodiment and specific operating process.
Such as Fig. 1, temperature measuring label includes：Label substrate 1, tag reflection coating 2, heat-conducting filler, label adhered layer 3.
Such as Fig. 2, a kind of temperature label wireless temperature measuring device, including：Temperature measuring label and ultrasonic temperature measuring instrument；Ultrasound
Wave thermometric instruments include circuit module and shell；
Microcontroller by pcb board respectively with ultrasonic drive circuit, ultrasound examination processing circuit, memory module and power supply
Module connects；Ultrasonic drive circuit is electrically connected with ultrasonic transmitter；Ultrasonic receiver and ultrasound examination processing circuit
Electrical connection.
Enclosure environment temperature is measured using platinum resistance temperature sensor, for compensating environment temperature to ultrasound examination
The influence of circuit amplification factor.
The echo-signal of ultrasonic receiver is amplified through signal and bandwidth-limited circuit, generates the voltage signal of 0~5V, warp
Cross 12 high-speed a/d converter digitlizations.
Such as Fig. 3, ultrasonic transmitter transmitting ultrasonic pulse string is received after temperature measuring label reflects by ultrasonic receiver.
Such as Fig. 4, microcontroller cyclic drive supersonic generator, each measurement period sends out 8 ultrasonic pulses, through super
After the temperature sensitive tag reflection of sound wave, ultrasound echo signal is detected by receiver, when SCM system acquires echo-signal calculating decaying
Between constant.
Ultrasound echo signal is vibrated by label temperature measuring equipment, label dust stratification, environment temperature, and ambient wind velocity influences to be difficult steady
Fixed, the amplitude fluctuations of echo envelope line are very big, it cannot be guaranteed that damping time constant measures consistency, occur by adjusting ultrasonic wave
Device burst amplitude keeps echo envelope wire spoke value stabilization, obtains normalized fluorescence decay pulse, is conducive to improve thermometric essence
Degree.
Microcontroller measures the difference of starting point and end point amplitude, automatic adjustment ultrasound according to the ultrasonic pulse string envelope
Wave impulse string emissive porwer so that train of pulse receives signal envelope and measures starting point and end point difference in magnitude substantially constant, improves
Envelope die-away time extension consistency.
Input module uses button, and it is SD card module that display module, which uses display screen, memory module,.
Microcontroller is that stm32f405 microcontrollers and minimum system form, and completes system control and the letter of label temperature measuring equipment
Number processing.
Stm32f405 microcontrollers read and write SD card module by SDIO interfaces, and SCM system configures FATFS file system,
Effectively tissue mass data storage.
Stm32f405 microcontrollers at most provide 5 serial digital communications interfaces, one of connection RS485 cabled digitals
Communication module, another connects GPRS agreements DTU module (or 433MHz wireless remote transmissions module) by fluorescence labels temperature measuring equipment
Data remote transmission is inquired to server for consumer remote.
Ultrasonic temperature measuring instrument provided in an embodiment of the present invention uses 12V DC power supply power supply, linear steady through 7808
Die block voltage stabilizing is that ultrasonic transmitter and receiver are powered, then it is acoustic-electric to generate 5V power supplys through 7805 linear voltage stabilization modules to 8V
The analogue signal circuits power supplies such as conversion amplification filtering, then it is stm32f405 to generate 3.3V power supplys through SP1117-3.3V Voltage stabilizing modules
Core circuit, enclosure temperature measurement module, SD card memory module, button display module, RS485 communication modules and 433MHz are wireless
The supplying digital circuits such as remote-transmission module.
Label temperature measuring equipment acquisition provided in an embodiment of the present invention and temperature associated ultrasonic echo Damped exponential signals, according to
The Damped exponential signals time constant computational methods of specification, it is easy to establish the corresponding time constant relationship of different temperatures, this hair
It is bright to use ultrasonic echo envelope stabilizing circuit and program, the interference that device is brought with label open space can be greatly reduced,
Device placed inside environment temperature sensor is to compensate acoustic-electric acquisition, amplification and digitizer temperature drift, thermometric of the present invention simultaneously
Precision is high, and ultrasonic echo envelope damping time constant is generally in hundreds of microseconds to more than ten milliseconds, and the electronic device time is smart at present
Degree in 10ns or more, measurement range temperature resolution can reach 0.01 degree, measurement accuracy within 0.1 degree, considerably beyond
The precision of conventional wireless thermometric reaches the temperature measurement accuracy of platinum resistance.
Ultrasonic temperature sensing material effective temperature sensitive range is surveyed with platinum resistance substantially between -200 to 600 degree at present simultaneously
Warm range overlaps, considerably beyond traditional wireless temperature measurement method in precision and measurement range, before having prodigious application
Scape.
Above example be the application preferred embodiment, those skilled in the art can also on this basis into
The various transformation of row or improvement these transformation or improve under the premise of not departing from the application total design and should all belong to this Shen
Within the scope of please being claimed.
Claims (4)
1. a kind of temperature measuring label, which is characterized in that
Including：Label substrate, tag reflection coating, heat-conducting filler, label adhered layer；
The label substrate is flake, is made of porous ceramics, for absorbing and reflecting ultrasonic wave；
The heat-conducting filler is filled in the porous ceramics internal clearance, is used for heat conduction between measuring point and the porous ceramics；
The tag reflection coating covering seals a side surface of the label substrate, for reflecting ultrasonic wave；
The label adhered layer is set to another side surface of the label substrate, for the temperature measuring label to be attached to measuring point
On；
Sealing structure is integrally formed in label substrate border coating adhesive, the temperature measuring label.
2. a kind of temperature measuring label according to claim 1, which is characterized in that the porous ceramics is reticulated porous structures,
The mesh structural porous internal voids intercommunication, for absorbing and reflecting ultrasonic wave.
3. a kind of temperature measuring label according to claim 1, which is characterized in that the heat-conducting filler uses heat-conducting silicone grease.
4. a kind of temperature measuring label according to claim 1, which is characterized in that the tag reflection coating uses ultra-violet curing
Glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220523.5A CN108548609A (en) | 2018-03-16 | 2018-03-16 | A kind of temperature measuring label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220523.5A CN108548609A (en) | 2018-03-16 | 2018-03-16 | A kind of temperature measuring label |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108548609A true CN108548609A (en) | 2018-09-18 |
Family
ID=63516605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810220523.5A Pending CN108548609A (en) | 2018-03-16 | 2018-03-16 | A kind of temperature measuring label |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261003A (en) * | 2019-06-12 | 2019-09-20 | 苏州知义智能科技有限公司 | A kind of optics temperature measuring label |
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| CN103134606A (en) * | 2013-02-06 | 2013-06-05 | 常州智梭传感科技有限公司 | Differential type acoustic surface wave temperature sensor |
| CN203366635U (en) * | 2013-07-31 | 2013-12-25 | 北京物资学院 | Irreversible thermochromic label |
| CN203732175U (en) * | 2013-11-13 | 2014-07-23 | 南京信息工程大学 | Ultrasonic temperature measurer |
| US20150096745A1 (en) * | 2013-10-04 | 2015-04-09 | Baker Hughes Incorporated | Downhole Monitoring Using Magnetostrictive Probe |
| CN105701521A (en) * | 2016-01-13 | 2016-06-22 | 中国科学院半导体研究所 | Monitoring device of wireless radio frequency identification temperature label, system and method thereof |
| CN205691258U (en) * | 2015-12-30 | 2016-11-16 | 广州金芯智能卡科技有限公司 | Temperature measuring label |
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2018
- 2018-03-16 CN CN201810220523.5A patent/CN108548609A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134606A (en) * | 2013-02-06 | 2013-06-05 | 常州智梭传感科技有限公司 | Differential type acoustic surface wave temperature sensor |
| CN203366635U (en) * | 2013-07-31 | 2013-12-25 | 北京物资学院 | Irreversible thermochromic label |
| US20150096745A1 (en) * | 2013-10-04 | 2015-04-09 | Baker Hughes Incorporated | Downhole Monitoring Using Magnetostrictive Probe |
| CN203732175U (en) * | 2013-11-13 | 2014-07-23 | 南京信息工程大学 | Ultrasonic temperature measurer |
| CN205691258U (en) * | 2015-12-30 | 2016-11-16 | 广州金芯智能卡科技有限公司 | Temperature measuring label |
| CN105701521A (en) * | 2016-01-13 | 2016-06-22 | 中国科学院半导体研究所 | Monitoring device of wireless radio frequency identification temperature label, system and method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261003A (en) * | 2019-06-12 | 2019-09-20 | 苏州知义智能科技有限公司 | A kind of optics temperature measuring label |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190422 Address after: 215612 Intellectual Intelligence of Building B, Phoenix Science and Technology Venture Park, Fenghuang Town, Zhangjiagang City, Suzhou City, Jiangsu Province Applicant after: Suzhou Zhiyi Intelligent Technology Co., Ltd. Address before: Room 203, No. 19, 1881 Lane, Dongfang Road, Pudong New Area, Shanghai 200000 Applicant before: Zhang Li |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180918 |