CN109752116A - A kind of microwave cavity inside temperature probe - Google Patents
A kind of microwave cavity inside temperature probe Download PDFInfo
- Publication number
- CN109752116A CN109752116A CN201711092653.7A CN201711092653A CN109752116A CN 109752116 A CN109752116 A CN 109752116A CN 201711092653 A CN201711092653 A CN 201711092653A CN 109752116 A CN109752116 A CN 109752116A
- Authority
- CN
- China
- Prior art keywords
- fluorescent material
- microwave cavity
- electroluminescent device
- light transmitting
- temperature probe
- 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.)
- Granted
Links
Landscapes
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses temperature probes inside a kind of microwave cavity to be distributed with the RECTIFYING ANTENNA being electrically connected between each other, excitation module and electroluminescent device inside light transmitting shell for realizing the transmission of fluorescence signal, including light transmitting shell with external temperature detection circuit.Under working condition, RECTIFYING ANTENNA collects the microwave energy inside microwave cavity and converts electric energy for microwave energy, and the excitation module drives the electroluminescent device to issue continuous light pulse and fluorescent material thermometric portion.Fluorescent material in fluorescent material thermometric portion is generated fluorescent pulse after continuous light pulse excitation and appears light transmitting shell.The present invention can obtain higher exciting power, it is hereby achieved that higher fluorescent emission power, is conducive to external circuit detection, is with a wide range of applications.
Description
Technical field
The invention belongs to temperature measurement and control technology fields, and in particular to a kind of microwave cavity inside temperature probe.
Background technique
Monitoring temperature is needed in microwave stove heating food products, the accurate food temperature of control in real time defends safe diet
Life is palatable particularly significant.Traditional electronic temperature sensor is extremely serious by microwave interference, it is difficult to accurate temperature measurements, it is emerging
Fluorescence temperature transducer also face many problems, contact temperature measuring point after fluorescent probe encapsulation, irradiated by external drive light glimmering
Light probe modulates fluorescence signal according to food temperature, then detects fluorescence signal by external circuit module, to interpret food
Temperature.
But external drive optical signals cause seldom a part of optical signal to be irradiated on probe, lead in reasons such as scatterings
The fluorescence for causing probe to inspire is fainter.It is well known that Feebleness Light Signal Examining is very difficult, therefore, it is necessary to logical
Raising fluorescence signal power is crossed to reduce detection circuit difficulty, improves the accuracy of measurement.
Summary of the invention
For technological deficiency of the existing technology, the object of the present invention is to provide thermometrics inside a kind of microwave cavity to visit
Head, for realizing the transmission of fluorescence signal, including light transmitting shell, distribution inside the light transmitting shell with external temperature detection circuit
There are the RECTIFYING ANTENNA being electrically connected between each other, excitation module and an electroluminescent device, under working condition,
The RECTIFYING ANTENNA collects the microwave energy inside the microwave cavity and converts electric energy for the microwave energy；
The excitation module drives the electroluminescent device to issue exciting light；And
Fluorescent material thermometric portion, the fluorescent material in fluorescent material thermometric portion are generated glimmering after the excitation
Optical signal simultaneously appears the light transmitting shell.
Preferably, fluorescent material thermometric portion is fixedly arranged in the accommodating chamber of the light transmitting shell, the electroluminescent
Device is close to fluorescent material thermometric portion.
Preferably, fluorescent material thermometric portion is encapsulated in the space between the inner wall and outer wall of the light transmitting shell
Interior, the electroluminescent device is close to fluorescent material thermometric portion.
Preferably, the RECTIFYING ANTENNA is cylindrical with for collecting the microwave energy, and for the excitation module with
And the electroluminescent device provides electric energy.
Preferably, the material of all or part of light transmitting shell is glass material.
Preferably, the electroluminescent device includes at least first electrode, second electrode and between the first electrode
At least one layer of organic layer between the second electrode containing luminescent layer.
Preferably, fluorescent material thermometric portion described in the light emitting region face of the electroluminescent device.
Preferably, the electroluminescent device surface is coated with the fluorescent material.
Preferably, the light transmitting shell surface is covered with anti-reflection film.
The present invention is by obtaining microwave energy in microwave cavity using the RECTIFYING ANTENNA inside probe and being translated into electricity
Can, the irradiation fluorescent material so that excitation module driving electroluminescent device shines, fluorescent material contact thermography point, according to phosphor
The correlation of the fluorescence decay time of material and temperature, so that external circuit is able to detection fluorescence decay time and calculates measuring point temperature
Degree.Fluorescence temperature probe of the invention does not need the irradiation of external drive light source, and fluorescence signal intensity is big, is convenient for exterior light electric-examination
Measurement, so that non-contact temperature measuring is easily achieved inside microwave cavity.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 shows a specific embodiment of the invention, a kind of structural schematic diagram of microwave cavity inside temperature probe；With
And
Fig. 2 shows a specific embodiment of the invention, microwave cavity inside temperature probe working principle structure charts.
Specific embodiment
To be more clear the object, technical solutions and advantages of the present invention, with reference to the accompanying drawing and embodiment is to this hair
Bright technical solution is described.
The present invention provides a kind of non-optical fiber type fluorescence temperature probes for not needing external light source and generating exciting light, to be used for
To the temperature of microwave cavity precise measurement heating object in the operating condition, and the glimmering of testee temperature information will be included
Optical transmission of information converts electric signal and defeated for fluorescence information using temperature sensing circuit to the electrooptical device of micro-wave oven
It shows out.The internal structure of temperature probe is compact, reasonable inside microwave cavity of the invention, easy to use.
Specifically, Fig. 1 shows a specific embodiment of the invention, a kind of structure of microwave cavity inside temperature probe
Schematic diagram.As shown in Figure 1, temperature probe has a light transmitting shell 5 inside the microwave cavity, the shape of the light transmitting shell 5,
Material can be arranged accordingly according to the size and hot environment feature of microwave cavity.For example, column, strip, institute
The main material for stating light transmitting shell 5 can be the materials such as quartz, glass composition.Further, the light transmitting shell 5 is transparent
The fluorescence for internal excitation of popping one's head in can be transmitted as far as possible, be discharged by shape, reduce the shielding to fluorescence and influence of fading.It is described
Light transmitting shell 5 can be all-transparent, can also be set as transparent configuration in privileged site, and other parts then use nontransparent knot
Structure, it will not be described here.
Further, electronic component is distributed with inside the light transmitting shell 5, the electronic component includes at least mutual
Between the RECTIFYING ANTENNA 4, excitation module 3 and the electroluminescent device 2 that are electrically connected.Further, Fig. 1 and figure can be combined
Temperature probe working principle structure chart inside the microwave cavity shown in 2.In such embodiments, in the microwave cavity
Portion's temperature probe is placed in microwave cavity and contacts with measured object.The RECTIFYING ANTENNA 4 is collected in the microwave cavity
The microwave energy in portion simultaneously converts electric energy for the microwave energy.Specifically, under working station of microwave oven, micro-wave oven microwave is utilized
The microwave that generator generates sets up microwave electric field in microwave cavity, and the microwave electric field carries microwave energy, the rectification
Conversion of the antenna 4 for realizing microwave energy to electric energy.It is made of receiving antenna and rectification circuit.The receiving antenna will be received
The microwave energy of collection is converted into direct current by the rectification circuit, to cause hair for the excitation module 3 and the field
Optical device 2 provides electric energy.It more specifically, further include low-pass filter, match circuit, rectification two in the rectification circuit
Pole pipe, the straight-through component parts such as filter and load.Wherein, the low-pass filter is for guaranteeing that fundamental frequency passes through, and allows
Other frequency components that the receiving antenna receives cannot pass through, while the higher hamonic wave for preventing the rectifier diode from generating
And the matched well between satietin wavenumber filter and the receiving antenna；The straight-through filter is for allowing direct current smoothly to lead to
It crosses, prevents the higher hamonic wave of fundamental frequency and fundamental frequency or more by load, and the harmonic wave outside non-dc is radiated into back the rectification two
Pole pipe, it will not be described here.
Further, the excitation module 3 is for driving the electroluminescent device 2 to issue exciting light.Art technology
Personnel understand that electroluminescent converts electrical energy into luminous energy under electric field excitation, and the excitation module 3 is by causing hair to the field
Optical device 2 provides the voltage of some strength, drives the luminescent material in the electroluminescent device 2 to be stimulated continuous to generate
Light pulse, i.e., the described exciting light.There are many solid-state materials that there is this property, is capable of the mainly compound of practical application at present
Semiconductor, such as II-VI group and III-V compound.II-VI group is made powder, film or monocrystalline and can shine, and III-
V compounds of group is currently only limited to monocrystalline.For DC electric field excitation light-emitting material, with ZnS-Cu, Mn is best.
Further, the invention also includes fluorescent material thermometric portions 1, and fluorescent material thermometric portion is for directly contacting quilt
Object is surveyed to perceive measuring point temperature.It include the fluorescent material with temperature-sensing property in fluorescent material thermometric portion, more
Specifically, to will be described below in embodiment and be described in detail, it will not be described here.In conjunction with Fig. 1, Fig. 2, the fluorescent material thermometric
After the irradiation for receiving the exciting light, the fluorescent material is generated fluorescence signal and is appeared after the excitation in portion 1
The light transmitting shell 5.It will be appreciated by those skilled in the art that fluorescent material is after the light stimulus by certain wavelength (being excited to compose), by
Swash and gives off fluorescent energy.After excitation is cancelled, the duration of fluorescence sunset glow depends on fluorescent material characteristic, including environment temperature etc.
Factor.It is this be excited to fluoresce usually exponentially decay, time constant that we decay is referred to as fluorescence lifetime or glimmering
The light sunset glow time.Under different environment temperatures, fluorescence lifetime is also different.Therefore pass through the length of measurement fluorescence lifetime, so that it may
To learn the temperature of fluorescent material position.In the present invention, the fluorescence signal is by passing through thermometric inside the microwave cavity
It pops one's head in and itself is excited using the continuous and high intensity excitation light pulse that microwave energy in micro-wave oven generates, had continuous well
Property and intensity, can be good at feed back measured point actual temperature.It should be noted that under same energy excitation, it is different glimmering
There is the fluorescence different, those skilled in the art can adapt to according to the selection of the intensity of the exciting light in the luminous intensity of luminescent material
Material, such as the fluorescent material of the different colours such as red, blue.At the same time it can also be adjusted by area for changing fluorescent material etc.,
That is the small fluorescent material area of luminous intensity can be larger, and the big fluorescent material area of luminous intensity then can be appropriate small by one
A bit, it will not be described here.Further, the fluorescence signal appears the light transmitting shell, using the micro-wave oven is arranged in
Electrooptical device receives the fluorescence signal using outer detecting circuit and is converted into electric signal, final defeated in real time
Temperature signal out, to achieve the object of the present invention.
Further, in order to improve the delivery efficiency of the fluorescence signal, by fluorescent material thermometric portion 1 in institute
The distribution stated in light-permeable shell 5 carries out a variety of set-up modes.Specifically, in a specific alternate embodiment, the fluorescence
It is installed in the accommodating chamber of the light transmission together with the electronic components such as material thermometric portion 1 and the electroluminescent device, passes through this
The setting of sample, the phosphor being conveniently adjusted in the different electronic components in 5 inside of light transmitting shell and fluorescence thermometric portion 1
Preferable light emission effect is realized in the distribution of material.In such embodiments, the electroluminescent device 2 can be close to described
Fluorescent material thermometric portion.In another more preferably alternate embodiment, fluorescent material thermometric portion 1 is encapsulated in described
In space between the inner wall and outer wall of light transmitting shell 5, the electroluminescent device is close to fluorescent material thermometric portion 1.Tool
Body, fluorescent material thermometric portion 1 is the component part of the light transmitting shell 5, and fluorescent material thermometric portion 1 is preferably set
It sets in the bottom of the light transmitting shell 5, for directly being contacted with testee.By being filled in the inside of the light transmitting shell 5
Fluorescent material forms fluorescent material thermometric portion 1.Further, it is described glimmering to can according to need adjustment by those skilled in the art
The features such as the color of area and thickness and the fluorescent material of selection that luminescent material is distributed in the light transmitting shell 5, herein not
It gives and repeating.Further, in such embodiments, equally by the electroluminescent device 2 close to the fluorescent material thermometric
Portion 1 is arranged, and to improve the efficiency of optical signal transmission, it will not be described here.Further, the light transmitting shell 5 can also be real
Core structure, the fluorescent material, the electroluminescent device 2, the excitation module 3 and the RECTIFYING ANTENNA are packaged simultaneously
It is fixed on the inside of the light transmitting shell 5.
Further, it continues to refer to figure 1, in order to improve the efficiency that the RECTIFYING ANTENNA 4 collects the microwave energy, preferably
The RECTIFYING ANTENNA 4 is arranged to cylindrical shape by ground.It will be appreciated by those skilled in the art that the microwave radiated in microwave cavity is towards each
Direction dispersion, and temperature probe is usually strip or column inside the microwave cavity, it is therefore, received in different directions micro-
Wave energy has differences, in order to minimize because error caused by this species diversity can be improved using cylindric RECTIFYING ANTENNA
The RECTIFYING ANTENNA 4 receives the microwave energy in weaker direction, guarantee the RECTIFYING ANTENNA 4 can for the excitation module 3 and
The electroluminescent device provides enough electric energy.It will be appreciated by those skilled in the art that can also in the light transmitting shell 5, if
Multiple RECTIFYING ANTENNAs 4 are set, the shape of each RECTIFYING ANTENNA 4 can be the same or different, and multiple described whole
The microwave energy of different directions is received in current antenna 4 for receiving the receiving antenna of microwave energy.Jointly by the microwave energy
It is converted into electric energy and powers for the excitation module 3 and the electroluminescent device 2.It should be noted that outside the light transmission
Shell 5 can be whole light transmissions and be also possible to partial light permeability, and the light transmitting shell 5 is preferably glass material resistant to high temperature, with
It is used in micro-wave oven heating environment, while the electronic component being encapsulated in inside the light transmitting shell 5 is protected.
Further, the electroluminescent device 2 is organic electroluminescenoe device, is formed and is sent out by specific travel notes compound
Photosphere, it is ensured that realize display effect under low pressure.Further,
Different organic compounds has different current-carrying transmission characteristics, and being made using the lamination of organic compound can be from anode
With cathode it is good, evenly import hole and electronics.Specifically, the electroluminescent device 2 includes at least first electrode and the
Two electrodes, the first electrode and the second electrode are respectively anode and cathode, and the anode and the cathode are set relatively
It sets.Further, at least one layer of organic layer is additionally provided between the cathode and the anode.The organic layer is preferred
For multilayered structure, and the organic compound of each layer organic layer is different, to have different luminescent layers to realize different light
Transformation efficiency.
Further, in the present invention, fluorescent material thermometric portion 1 described in the light emitting region face of the electroluminescent device 2,
It is irradiated in the fluorescent material to the greatest extent with the excitation luminous energy for guaranteeing that the electroluminescent device 2 generates, to excite
Fluorescence out.Further, the surface coating fluorescent material of the electroluminescent device 2 is encapsulated into the light transmitting shell 5 again, with
Conducive to excitation fluorescence.Further, the present invention can also be by covering anti-reflection film on 5 surface of light transmitting shell, to improve
The light extraction efficiency of fluorescence, preferably to be detected by external circuit.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.
Claims (9)
1. temperature probe inside a kind of microwave cavity, special for realizing the transmission of fluorescence signal with external temperature detection circuit
Sign is, including light transmitting shell, be distributed with inside the light transmitting shell RECTIFYING ANTENNA being electrically connected between each other, excitation module and
Electroluminescent device, under working condition,
The RECTIFYING ANTENNA collects the microwave energy inside the microwave cavity and converts electric energy for the microwave energy；
The excitation module drives the electroluminescent device to issue exciting light；And
Fluorescent material thermometric portion, the fluorescent material in fluorescent material thermometric portion are generated fluorescence letter after the excitation
Number and appear the light transmitting shell.
2. temperature probe inside microwave cavity according to claim 1, which is characterized in that fluorescent material thermometric portion quilt
It is fixedly arranged in the accommodating chamber of the light transmitting shell, the electroluminescent device is close to fluorescent material thermometric portion.
3. temperature probe inside microwave cavity according to claim 1, which is characterized in that fluorescent material thermometric portion quilt
It is encapsulated in the space between the inner wall and outer wall of the light transmitting shell, the electroluminescent device is surveyed close to the fluorescent material
Warm portion.
4. temperature probe inside microwave cavity according to claim 2 or 3, which is characterized in that the RECTIFYING ANTENNA is in circle
Tubular provides electric energy to be used to collect the microwave energy for the excitation module and the electroluminescent device.
5. temperature probe inside microwave cavity according to any one of claim 1 to 3, which is characterized in that whole or portion
The material for dividing the light transmitting shell is glass material.
6. temperature probe inside microwave cavity according to claim 4, which is characterized in that the electroluminescent device is at least
Including first electrode, second electrode and between the first electrode and the second electrode containing luminescent layer at least one
Layer organic layer.
7. temperature probe inside microwave cavity according to claim 6, which is characterized in that the hair of the electroluminescent device
Fluorescent material thermometric portion described in the face of light region.
8. temperature probe inside microwave cavity according to claim 7, which is characterized in that the electroluminescent device surface
Coated with the fluorescent material.
9. temperature probe inside the microwave cavity according to any one of claim 6 to 8, which is characterized in that the light transmission
Case surface is covered with anti-reflection film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711092653.7A CN109752116B (en) | 2017-11-08 | 2017-11-08 | Temperature measuring probe in microwave cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711092653.7A CN109752116B (en) | 2017-11-08 | 2017-11-08 | Temperature measuring probe in microwave cavity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109752116A true CN109752116A (en) | 2019-05-14 |
| CN109752116B CN109752116B (en) | 2021-09-14 |
Family
ID=66402110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711092653.7A Active CN109752116B (en) | 2017-11-08 | 2017-11-08 | Temperature measuring probe in microwave cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109752116B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514321A (en) * | 2019-09-24 | 2019-11-29 | 上海集迦电子科技有限公司 | A kind of surface-adhered type fluorescence optical fiber temp probe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101790773A (en) * | 2007-11-16 | 2010-07-28 | 塞拉维申有限公司 | Light source |
| CN201680925U (en) * | 2010-05-18 | 2010-12-22 | 中国科学院西安光学精密机械研究所 | Fluorescence optical fiber temperature sensor based on fluorescence life detection |
| CN102401703A (en) * | 2011-08-23 | 2012-04-04 | 北京东方锐择科技有限公司 | Microwave temperature measurement system based on fluorescence fiber temperature measurement |
| CN102439690A (en) * | 2009-05-08 | 2012-05-02 | 塞拉维申有限公司 | Light source powered by microwaves |
| US8201997B1 (en) * | 2008-05-29 | 2012-06-19 | Ipitek, Inc. | Imaging temperature sensing system |
| CN104897303A (en) * | 2015-06-30 | 2015-09-09 | 广东美的厨房电器制造有限公司 | Fiber optic temperature sensor, microwave heating device and heating method |
-
2017
- 2017-11-08 CN CN201711092653.7A patent/CN109752116B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101790773A (en) * | 2007-11-16 | 2010-07-28 | 塞拉维申有限公司 | Light source |
| US8201997B1 (en) * | 2008-05-29 | 2012-06-19 | Ipitek, Inc. | Imaging temperature sensing system |
| CN102439690A (en) * | 2009-05-08 | 2012-05-02 | 塞拉维申有限公司 | Light source powered by microwaves |
| CN201680925U (en) * | 2010-05-18 | 2010-12-22 | 中国科学院西安光学精密机械研究所 | Fluorescence optical fiber temperature sensor based on fluorescence life detection |
| CN102401703A (en) * | 2011-08-23 | 2012-04-04 | 北京东方锐择科技有限公司 | Microwave temperature measurement system based on fluorescence fiber temperature measurement |
| CN104897303A (en) * | 2015-06-30 | 2015-09-09 | 广东美的厨房电器制造有限公司 | Fiber optic temperature sensor, microwave heating device and heating method |
Non-Patent Citations (1)
| Title |
|---|
| 季帅: "基于微带电路的ISM波段整流天线的研究与设计", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514321A (en) * | 2019-09-24 | 2019-11-29 | 上海集迦电子科技有限公司 | A kind of surface-adhered type fluorescence optical fiber temp probe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109752116B (en) | 2021-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhou et al. | An ultraviolet–visible and near‐infrared‐responded broadband NIR phosphor and its NIR spectroscopy application | |
| US4215275A (en) | Optical temperature measurement technique utilizing phosphors | |
| CN102798485B (en) | Temperature sensing method based on upconversion fluorescent powder | |
| GB1605118A (en) | Optical temperature sensing means | |
| CN202614177U (en) | Comprehensive detection device of silicon wafer | |
| AU2019299351B2 (en) | Open-circuit electroluminescence | |
| CN115291071B (en) | LED array photo-thermal integrated detection device and method based on lock-in amplifier | |
| Zhu et al. | Lanthanide-doped lead-free double perovskite La 2 MgTiO 6 as ultra-bright multicolour LEDs and novel self-calibrating partition optical thermometer | |
| Xie et al. | Near-Infrared LuCa2ScZrGa2GeO12: Cr3+ garnet phosphor with ultra-broadband emission for NIR LED applications | |
| CN109752116A (en) | A kind of microwave cavity inside temperature probe | |
| CN105547516B (en) | Laser pump (ing) up-conversion fluorescence temp measuring system | |
| CN110361106A (en) | A kind of highly sensitive temperature sensing method of near-infrared fluorescent | |
| CN109729610A (en) | A kind of RF heating system and radio heater with fluorescence temperature sensor | |
| US8841635B2 (en) | Microwave induced visible luminescence | |
| CN109490750B (en) | Instrument and method for detecting LED chip | |
| Fernicola et al. | Fiber optic thermometry based on Cr-fluorescence in olivine crystals | |
| EP4152420A1 (en) | Light emitting device and electronic apparatus using same | |
| CN209605989U (en) | Mechanoluminescence sensor | |
| CN108801995A (en) | A kind of the high pass amount detecting device and method of incorporating quantum point fluorescence and multispectral camera | |
| CN207369334U (en) | A kind of RF heating system and radio heater with fluorescence temperature sensor | |
| CN112880826A (en) | Luminous intensity detection device and system | |
| CN207351552U (en) | A kind of photo-thermal detection system | |
| US11393387B2 (en) | Open-circuit electroluminescence | |
| CN109581059A (en) | A kind of preparation method based on graphene/up-conversion luminescence nanometer crystal composite material variable-resistance transducer | |
| CN117089348B (en) | Blue light excited near infrared luminescent fluorescent powder and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |