CN104833441A - Online monitoring device and method for temperature change rule of high-frequency and routine hot-pressing wood-based plate slabs - Google Patents
Online monitoring device and method for temperature change rule of high-frequency and routine hot-pressing wood-based plate slabs Download PDFInfo
- Publication number
- CN104833441A CN104833441A CN201510288545.1A CN201510288545A CN104833441A CN 104833441 A CN104833441 A CN 104833441A CN 201510288545 A CN201510288545 A CN 201510288545A CN 104833441 A CN104833441 A CN 104833441A
- Authority
- CN
- China
- Prior art keywords
- module
- mcu
- probe
- high frequency
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
An online monitoring device for the temperature change rule of high-frequency and routine hot-pressing wood-based plate slabs comprises a probe, a transmission fiber, a signal demodulator, an MCU module, a real-time clock module, a data storage module, an LCD module, a CAN communication interface module and an alarm device module. An online monitoring method for temperature change rule of high-frequency and routine hot-pressing wood-based plate slabs comprises the steps that slabs are assembled and arranged in a press; a corundum pipe which is internally provided with the fiber temperature measuring probe is inserted into a reserved slab gap; an upper platen controller is started to implement pressurization slowly till the gap of the upper and lower platens reaches a preset thickness; and the signal modulator and MCU are started to collect data automatically and observe results. According to the monitoring method and device, test is convenient, data is concrete, accurate and reliable, the purely fiber probe is intrinsically safe, high voltage is insulated, and electromagnetic interference is resisted.
Description
Technical field
The present invention relates to timber process automation technical field, the on-Line Monitor Device of especially a kind of high frequency and conventional hot-press artificial board blank temperature changing regularity and method.
Background technology
Wooden for applying glue unit (veneer, wood shavings and fiber) is normally made it the sheet material be bonded into one by wood-based plate by the hot pressing function of some cycles, be divided into single board quasi-artificial board and non-single board quasi-artificial board by material unit.
In hot pressing of artificial board, heat transmission makes board briquette raise, and then causes the migration of the evaporation of moisture, slab air pressure change and moisture; Otherwise the migration of moisture also can affect the transmission of heat.Add hydrothermal under, wood material is softening causes slab densification; And the change of slab density can affect heat transmission and moisture in slab greatly moves, the chemical reaction of tackifier also can have influence on slab thermal change.Generally speaking, hot pressing of artificial board relates to slab deformation, physical process and chemical reaction.This three intercouples, and adds the variability of raw material itself, and it is very difficult for therefore inherently will understanding hot pressing.
Hot pressing is vital link in Wood-based Panel Production, directly has influence on properties of product and quality and energy consumption.From production reality, we are it is of concern that how long and need great pressure could realize predetermined density requirements wood-based plate can complete adhesive solidification under many high-temperatures, need hot pressing.Visible, understand the formulation of artificial board blank temperature variation to wood-based plate hot compression parameters and have very important significance.
When correlation technique of the prior art and device only can measure conventional hot-press, wood-based plate internal temperature changes, and is difficult to work under high-frequency heating environment.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of and tests convenient, the data accurately on-Line Monitor Device of high frequency and conventional hot-press artificial board blank temperature changing regularity and method reliably.
For solving the problems of the technologies described above, the invention provides the on-Line Monitor Device of a kind of high frequency and conventional hot-press artificial board blank temperature changing regularity, comprise probe, Transmission Fibers, demodulator of PM signal PM, MCU module, real-time clock module, data memory module, LCD MODULE, CAN communication interface module, warning device module; Probe is connected with Transmission Fibers, and the data recorded of popping one's head in are transmitted by Transmission Fibers; Transmission Fibers is connected with demodulator of PM signal PM, and the data through Transmission Fibers transmission are sent into demodulator of PM signal PM and carried out modulation /demodulation process; Demodulator of PM signal PM is connected with MCU module, and the signal through demodulator of PM signal PM process is sent into MCU module and processed; MCU module is connected with real-time clock module, data memory module, LCD MODULE, CAN communication interface module, warning device module respectively.
Real-time clock module needs to select year, month, day, hour, min according to system, is used for improving data, and as the foundation of data storage location; Data memory module is used for storing system information and historical data; The various information such as LCD MODULE instant playback tested object temperature information and system time; CAN communication interface module and host computer carry out independently interactive communication; The function of warning device module is when the data collected exceed limit value, starts ring and carries out reporting to the police or starting interlocking equipment.
Preferably, described probe is by the fluorescent optical fiber sensor of optical fiber built-in temperature sensor.
Preferably, also power module is comprised; Power module is directly connected with MCU module, powers to whole device, and the system of guarantee can reliably working, and improves antijamming capability.
Preferably, also parameter setting module is comprised; Parameter setting module is directly connected with MCU module, can artificially arrange corresponding test parameter.
Preferably, reset administration module is also comprised; Reset administration module is directly connected with MCU module, initialization MCU module and CAN controller, allows system enforced reset to make system re-initialization, thus proceeds to normal operation.
Application said apparatus carries out the on-line monitoring method of high frequency and conventional hot-press artificial board blank temperature changing regularity, it is characterized in that, comprises the steps:
(1) assembly; Slab diverse location future insufficiency so that different number probe insert;
(2) slab is placed in press, probe adhesive tape fills in the alundum tube that internal diameter is 2mm after being wound around, and guarantees sealing; The alundum tube of probe is inserted in reserved slab breach;
(3) open top board control device slowly to pressurize, until shelves opened by upper lower platen arrive predetermined thickness stopping;
(4) start signal detuner and MCU, temperature acquisition is gathered once every 5s automatically by MCU; Then open radio-frequency generator, heating of plate blank radio-frequency generator output power used is 30kW, and standard frequency is 6.78MHz.
(5) observed result.
Preferably, the diverse location in step (1) is 1/2 place of 1/2 thickness in slab thickness direction, 1/4 thickness and surface location or slab top layer and thickness.
Preferably, the probe number in step (1) is 2 or 3.
Beneficial effect of the present invention is: artificial intralamellar part temperature variation under this method of testing 1, adopted can objectively respond actual state, and its test is convenient, informative data, accurately and reliably.2, fluorescence optical fiber probe has essential safety, High-Voltage Insulation, electromagnetism interference, and the measurement for the change of High frequency heating wood-based plate internal temperature has incomparable advantage, for the optimization of wood-based plate heat pressing process provides reference, has broad application prospects.
Accompanying drawing explanation
Fig. 1 is single unit system structural drawing of the present invention.
Fig. 2 is that High frequency heating of the present invention manufactures laminated veneer lumber (LVL) board briquette measuring method schematic diagram.
Fig. 3 is that High frequency heating of the present invention manufactures laminated veneer lumber (LVL) board briquette measurement result schematic diagram.
Fig. 4 is that High frequency heating of the present invention manufactures straw particle board board briquette measuring method schematic diagram.
Fig. 5 is that High frequency heating of the present invention manufactures straw particle board board briquette measurement result schematic diagram.
Fig. 6 is that conventional hot-press of the present invention manufactures laminated veneer lumber (LVL) board briquette measuring method schematic diagram.
Fig. 7 is that conventional hot-press of the present invention manufactures laminated veneer lumber (LVL) board briquette measurement result schematic diagram.
Embodiment
As shown in Figure 1, an on-Line Monitor Device for high frequency and conventional hot-press artificial board blank temperature changing regularity, comprises probe, Transmission Fibers, demodulator of PM signal PM, MCU module, real-time clock module, data memory module, LCD MODULE, CAN communication interface module, warning device module; Probe is connected with Transmission Fibers, and the data recorded of popping one's head in are transmitted by Transmission Fibers; Transmission Fibers is connected with demodulator of PM signal PM, and the data through Transmission Fibers transmission are sent into demodulator of PM signal PM and carried out modulation /demodulation process; Demodulator of PM signal PM is connected with MCU module, and the signal through demodulator of PM signal PM process is sent into MCU module and processed; MCU module is connected with real-time clock module, data memory module, LCD MODULE, CAN communication interface module, warning device module respectively.
Real-time clock module needs to select year, month, day, hour, min according to system, is used for improving data, and as the foundation of data storage location; Data memory module is used for storing system information and historical data; The various information such as LCD MODULE instant playback board briquette change information and system time; CAN communication interface module and host computer carry out independently interactive communication; The function of warning device module is when the data collected exceed limit value, starts ring and carries out reporting to the police or starting interlocking equipment.
Probe is by the fluorescent optical fiber sensor of optical fiber built-in temperature sensor.
Also comprise power module, parameter setting module and reset administration module; Power module is directly connected with MCU module, powers to whole device, and the system of guarantee can reliably working, and improves antijamming capability; Parameter setting module is directly connected with MCU module, artificially can arrange corresponding test parameter reset administration module to be directly connected with MCU module, initialization MCU module and CAN controller, allow system enforced reset to make system re-initialization, thus proceed to normal operation.
Fluorescent optical fiber temperature sensor forms by multimode optical fiber with at the fluorescent object (film) that its top fluorescent optical fiber temperature sensor sensing probe and optical fiber are installed.Fluorescent material is after the light stimulus being subject to certain wavelength (being excited to compose), and stimulated radiation goes out fluorescent energy.After excitation is cancelled, the continuation of fluorescence sunset glow depends on the factors such as fluorescent material characteristic, environment temperature.This be stimulated fluorescence normally exponentially mode decay, we claim the time constant decayed to be fluorescence lifetime or fluorescence sunset glow time (ns).Under different environment temperatures, the decay of fluorescence sunset glow is also different.Therefore by measuring the length in fluorescence sunset glow life-span, environment temperature at that time can just be learnt.Compare plain metal sensor, fluorescent optical fiber temperature sensor is more suitable for the environment of High frequency heating, and measuring accuracy is high.
Embodiment 1: High frequency heating manufactures laminated veneer lumber (LVL) board briquette and measures.
As shown in Figure 2, laminated veneer lumber is that 31 blanket glued veneer rift grain assemblies form, and often opening veneer thickness is 1.7mm, and water percentage is about 12%; Tackifier is commercial synvaren, and solid content is 45%; Glue-spread is 120g/m
2; Slab target compression is 5%.During assembly, 1/2 thickness in slab thickness direction, 1/4 thickness and surface location future insufficiency are so that three probes of optic fiber thermometer 1 insert.
Slab is placed in press.Optical fiber temperature measurement system by popping one's head in, demodulator of PM signal PM and MCU form, fill in the alundum tube that internal diameter is 2mm respectively after three probe adhesive tapes are wound around, protection probe, and sealing will be guaranteed; Then three of built-in fiber temperature measurer alundum tubes of popping one's head in are inserted in reserved slab breach.
Open top board control device slowly to pressurize, until shelves opened by upper lower platen arrive predetermined thickness stopping.Start signal detuner and MCU, temperature acquisition is gathered once every 5s automatically by MCU; Then open radio-frequency generator, heating of plate blank radio-frequency generator output power used is 30kW, and standard frequency is 6.78MHz.
As shown in Figure 3, High frequency heating manufactures laminated veneer lumber (LVL) board briquette measurement result, can clearly see, the temperature changing trend that three positions record is incomplete same, compare with other positions, two places, minimum in (z=0) place temperature near border.The temperature contrast of this instant measurement is mainly caused by boundary thermal loss.The phenomenon that another one is interesting is: when temperature rises to about 100 DEG C, and trial curve change eases up.First this be because in veneer and tackifier, the phase transformation of water causes.Next is that along with adhesive solidification, the aqueous water in tackifier also can evaporate because the polyreaction of tackifier.
Embodiment 2: High frequency heating manufactures straw particle board board briquette and measures.
As shown in Figure 4, crushed aggregates of straw slab is mated formation by applying glue crushed aggregates of straw to form, and tackifier used is urea-formaldehyde resin adhesive (UF), resin added about 12%, and raw aqueous rate is about 10%, slab thickness 40mm.
Slab is placed in press.Optical fiber temperature measurement system by popping one's head in, demodulator of PM signal PM and MCU form, fill in the alundum tube that internal diameter is 2mm respectively after being wound around with adhesive tape of two probes, protection probe, guarantees sealing; Then two of built-in fiber temperature measurer alundum tubes of popping one's head in are inserted 1/2 position, place of slab top layer and thickness.Because straw slab is very fluffy, do not need future insufficiency.
Open top board control device slowly to pressurize, until shelves opened by upper lower platen arrive predetermined thickness stopping.Start signal detuner and MCU, temperature acquisition is gathered once every 5s automatically by MCU; Then open radio-frequency generator, heating of plate blank radio-frequency generator output power used is 30kW, and standard frequency is 6.78MHz.
As shown in Figure 5, High frequency heating manufactures straw particle board board briquette measurement result, and can clearly see, during high-frequency heating, slab internal temperature there are differences on thickness, and Temperature Distribution aggregate performance is that sandwich layer height top layer is low.
Embodiment 3: conventional hot-press (heating platen hot pressing) manufactures laminated veneer lumber (LVL) board briquette and measures.
As shown in Figure 6, laminated veneer lumber is that 31 blanket glued veneer rift grain assemblies form, and often opening veneer thickness is 1.7mm, and water percentage is about 12%; Tackifier is commercial synvaren, and solid content is 45%; Glue-spread is 120g/m
2; Slab target compression is 5%.During assembly, 1/2 thickness in slab thickness direction, 1/4 thickness and surface location future insufficiency are so that three probes insert.
Slab is placed in press.Optical fiber temperature measurement system by popping one's head in, demodulator of PM signal PM and MCU form, fill in the alundum tube that internal diameter is 2mm respectively after three probe adhesive tapes are wound around, protection probe, guarantees sealing; Then three of built-in fiber temperature measurer alundum tubes of popping one's head in are inserted in reserved slab breach.
Open top board control device slowly to pressurize, until shelves opened by upper lower platen arrive predetermined thickness stopping.Start signal detuner and MCU, temperature acquisition is gathered once every 5s automatically by MCU; Then open radio-frequency generator, heating of plate blank radio-frequency generator output power used is 30kW, and standard frequency is 6.78MHz.
As shown in Figure 7, conventional hot-press manufactures laminated veneer lumber (LVL) board briquette measurement result, can clearly see, the temperature changing trend that three positions record is incomplete same, sandwich layer z=h/2 place temperature is the slowest, take second place in h/4 place, top layer is heated up the fastest, and slab has obvious thermograde at thickness direction; Manufacture laminated veneer lumber (LVL) with high-frequency heating to compare, sandwich layer is warmed up to 100 DEG C, the conventional hot-press significant need longer time.
Although the present invention illustrates with regard to preferred implementation and describes, only it will be understood by those of skill in the art that otherwise exceed claim limited range of the present invention, variations and modifications can be carried out to the present invention.
Claims (8)
1. the on-Line Monitor Device of a high frequency and conventional hot-press artificial board blank temperature changing regularity, it is characterized in that, comprising: probe, Transmission Fibers, demodulator of PM signal PM, MCU module, real-time clock module, data memory module, LCD MODULE, CAN communication interface module, warning device module; Probe is connected with Transmission Fibers, and the data recorded of popping one's head in are transmitted by Transmission Fibers; Transmission Fibers is connected with demodulator of PM signal PM, and the data through Transmission Fibers transmission are sent into demodulator of PM signal PM and carried out modulation /demodulation process; Demodulator of PM signal PM is connected with MCU module, and the signal through demodulator of PM signal PM process is sent into MCU module and processed; MCU module is connected with real-time clock module, data memory module, LCD MODULE, CAN communication interface module, warning device module respectively.
2. the on-Line Monitor Device of high frequency as claimed in claim 1 and conventional hot-press artificial board blank temperature changing regularity, it is characterized in that, described probe is by the fluorescent optical fiber sensor of optical fiber built-in temperature sensor.
3. the on-Line Monitor Device of high frequency as claimed in claim 1 and conventional hot-press artificial board blank temperature changing regularity, is characterized in that, also comprise power module; Power module is directly connected with MCU module.
4. the on-Line Monitor Device of high frequency as claimed in claim 1 and conventional hot-press artificial board blank temperature changing regularity, is characterized in that, also comprise parameter setting module; Parameter setting module is directly connected with MCU module, artificially arranges corresponding test parameter.
5. the on-Line Monitor Device of high frequency as claimed in claim 1 and conventional hot-press artificial board blank temperature changing regularity, is characterized in that, also comprise reset administration module; Reset administration module is directly connected with MCU module, initialization MCU module and CAN controller.
6. an on-line monitoring method for high frequency and conventional hot-press artificial board blank temperature changing regularity, is characterized in that, comprise the steps:
(1) assembly; At slab diverse location future insufficiency so that the probe of different number inserts;
(2) slab is placed in press, probe adhesive tape fills in the alundum tube that internal diameter is 2mm after being wound around respectively, guarantees sealing; The alundum tube of probe is inserted in reserved slab breach;
(3) open top board control device slowly to pressurize, until shelves opened by upper lower platen arrive predetermined thickness stopping;
(4) start signal detuner and MCU, temperature acquisition is gathered once every 5s automatically by MCU; Then open radio-frequency generator, heating of plate blank radio-frequency generator output power used is 30kW, and standard frequency is 6.78MHz.
(5) observed result.
7. the on-line monitoring method of high frequency as claimed in claim 6 and conventional hot-press artificial board blank temperature changing regularity, the diverse location in step (1) is 1/2 place of 1/2 thickness in slab thickness direction, 1/4 thickness and surface location or slab top layer and thickness.
8. the on-line monitoring method of high frequency as claimed in claim 6 and conventional hot-press artificial board blank temperature changing regularity, the probe number in step (1) is 2 or 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510288545.1A CN104833441A (en) | 2015-05-29 | 2015-05-29 | Online monitoring device and method for temperature change rule of high-frequency and routine hot-pressing wood-based plate slabs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510288545.1A CN104833441A (en) | 2015-05-29 | 2015-05-29 | Online monitoring device and method for temperature change rule of high-frequency and routine hot-pressing wood-based plate slabs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104833441A true CN104833441A (en) | 2015-08-12 |
Family
ID=53811468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510288545.1A Pending CN104833441A (en) | 2015-05-29 | 2015-05-29 | Online monitoring device and method for temperature change rule of high-frequency and routine hot-pressing wood-based plate slabs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104833441A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111360950A (en) * | 2020-03-09 | 2020-07-03 | 杨奠基 | Method and device for measuring and recording temperature and pressure in plywood in production process |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5886964A (en) * | 1981-11-17 | 1983-05-24 | Seiichi Okuhara | Continuous casting device |
| CN1117582A (en) * | 1995-04-25 | 1996-02-28 | 北京林业大学 | Test method and equipment for hot pressing of artificial board in wet making method |
| WO2006130941A1 (en) * | 2005-06-09 | 2006-12-14 | Usinas Siderúrgicas De Minas Gerais S.A. Usiminas | Device for continuous temperature measurement of molten steel in the undish using optical fiber and infra-red pyrometer |
| CN201201041Y (en) * | 2008-05-28 | 2009-03-04 | 上海梅山钢铁股份有限公司 | Copper plate thermoelectric couple mounting structure of slab continuous casting crystallizer |
| CN201262556Y (en) * | 2008-09-26 | 2009-06-24 | 中国林业科学研究院木材工业研究所 | Wireless transferring apparatus for measuring temperature and pressure simultaneously |
| KR20110067802A (en) * | 2009-12-15 | 2011-06-22 | (주)모인시스 | Apparatus for measuring temperature of cast piece |
| CN202329866U (en) * | 2011-09-23 | 2012-07-11 | 苏州光格设备有限公司 | Fluorescent optical fiber temperature sensing demodulation instrument |
| CN103528704A (en) * | 2013-10-11 | 2014-01-22 | 中国林业科学研究院木材工业研究所 | Online control device and online control method for hot pressing procedure of artificial board |
| CN104062030A (en) * | 2014-06-16 | 2014-09-24 | 北京首钢股份有限公司 | Device and method for measuring surface temperature of plate blank online |
| CN204705420U (en) * | 2015-05-29 | 2015-10-14 | 江苏农林职业技术学院 | The on-Line Monitor Device of high frequency and conventional hot-press artificial board blank temperature changing regularity |
-
2015
- 2015-05-29 CN CN201510288545.1A patent/CN104833441A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5886964A (en) * | 1981-11-17 | 1983-05-24 | Seiichi Okuhara | Continuous casting device |
| CN1117582A (en) * | 1995-04-25 | 1996-02-28 | 北京林业大学 | Test method and equipment for hot pressing of artificial board in wet making method |
| WO2006130941A1 (en) * | 2005-06-09 | 2006-12-14 | Usinas Siderúrgicas De Minas Gerais S.A. Usiminas | Device for continuous temperature measurement of molten steel in the undish using optical fiber and infra-red pyrometer |
| CN201201041Y (en) * | 2008-05-28 | 2009-03-04 | 上海梅山钢铁股份有限公司 | Copper plate thermoelectric couple mounting structure of slab continuous casting crystallizer |
| CN201262556Y (en) * | 2008-09-26 | 2009-06-24 | 中国林业科学研究院木材工业研究所 | Wireless transferring apparatus for measuring temperature and pressure simultaneously |
| KR20110067802A (en) * | 2009-12-15 | 2011-06-22 | (주)모인시스 | Apparatus for measuring temperature of cast piece |
| CN202329866U (en) * | 2011-09-23 | 2012-07-11 | 苏州光格设备有限公司 | Fluorescent optical fiber temperature sensing demodulation instrument |
| CN103528704A (en) * | 2013-10-11 | 2014-01-22 | 中国林业科学研究院木材工业研究所 | Online control device and online control method for hot pressing procedure of artificial board |
| CN104062030A (en) * | 2014-06-16 | 2014-09-24 | 北京首钢股份有限公司 | Device and method for measuring surface temperature of plate blank online |
| CN204705420U (en) * | 2015-05-29 | 2015-10-14 | 江苏农林职业技术学院 | The on-Line Monitor Device of high frequency and conventional hot-press artificial board blank temperature changing regularity |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111360950A (en) * | 2020-03-09 | 2020-07-03 | 杨奠基 | Method and device for measuring and recording temperature and pressure in plywood in production process |
| CN111360950B (en) * | 2020-03-09 | 2021-10-01 | 杨奠基 | Method and device for measuring and recording temperature and pressure in plywood in production process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103837834B (en) | The method of testing of battery thermal runaway characteristic | |
| CN106595731B (en) | A kind of fibrous composite hot moulding curing deformation optical fiber monitoring device and method | |
| CN105043964A (en) | Test apparatus for ultraviolet aging acceleration of asphalt-based materials | |
| CN204718708U (en) | A kind of sensor simultaneously measured with strain based on temperature that is spherical and thin-core fibers | |
| CN206248102U (en) | A kind of fibrous composite hot moulding curing deformation optical fiber monitoring device | |
| CN204705420U (en) | The on-Line Monitor Device of high frequency and conventional hot-press artificial board blank temperature changing regularity | |
| CN104833888B (en) | Heat cable cold cycling equipment for testing service life and test method | |
| CN104833441A (en) | Online monitoring device and method for temperature change rule of high-frequency and routine hot-pressing wood-based plate slabs | |
| CN102590273B (en) | System and method for detecting warm-keeping rate of a textile | |
| CN201307084Y (en) | Novel textile fiber moisture testing oven | |
| CN208014822U (en) | Battery hot-pressing shaping machine structure | |
| CN204881905U (en) | Temperature sensor of spherical structure optic fibre | |
| CN104535607A (en) | Method for semiquantitative rapid measurement of material thermal diffusion performance | |
| CN104543064A (en) | Intelligent control mode for tidying tea strips | |
| CN201653588U (en) | Temperature measuring device used for concrete track slabs and test blocks and maintenance device | |
| CN102967267B (en) | Method for measuring thickness of second-layer medium of double-layer structure on basis of infrared thermal wave technology | |
| CN104459084A (en) | Rock anisotropy detection system | |
| CN104608007A (en) | Manufacturing method for embedded thermocouple type composite processing temperature measuring sample | |
| Calawa et al. | Medium wave infrared heater for high-speed fiber placement | |
| Oromiehie et al. | Structural health monitoring and processing of composites using photonic sensing technology | |
| HUE026767T2 (en) | Method and apparatus for manufacturing a body made of wooden material | |
| CN204389060U (en) | Transformer optical fiber grating temperature-measuring system | |
| Kalkanis et al. | Experimental control of curing via dielectric and fibre Bragg grating sensors for composite patch repairs | |
| CN207540596U (en) | The multi-parameter on-line monitoring system of composite material hot-press solidifying process | |
| CN107192477B (en) | Photovoltaic module lamination temperature tester and temperature control system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150812 |