CN206469985U - The thermopile infrared sensor of environment temperature calibration-free - Google Patents
The thermopile infrared sensor of environment temperature calibration-free Download PDFInfo
- Publication number
- CN206469985U CN206469985U CN201720104225.0U CN201720104225U CN206469985U CN 206469985 U CN206469985 U CN 206469985U CN 201720104225 U CN201720104225 U CN 201720104225U CN 206469985 U CN206469985 U CN 206469985U
- Authority
- CN
- China
- Prior art keywords
- thermistor
- infrared sensor
- base
- thermopile infrared
- environment temperature
- 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.)
- Active
Links
Landscapes
- Radiation Pyrometers (AREA)
Abstract
The utility model provides a kind of thermopile infrared sensor of environment temperature calibration-free, and the thermopile infrared sensor of the environment temperature calibration-free includes：Thermopile infrared sensor chip；Thermistor；Thermistor matching resistor, the resistance of the thermistor matching resistor is identical with the resistance of the thermistor under identical temperature conditionss.The thermopile infrared sensor of the environment temperature calibration-free of the present utility model is by setting up the thermistor matching resistor matched with thermistor, accurate measurement can be achieved without being calibrated to thermistor during use, the reliability of device is improved, has the advantages that easy to use, cost performance is high.
Description
Technical field
The utility model belongs to infrared sensor technical field, more particularly to a kind of thermoelectric pile of environment temperature calibration-free
Infrared sensor.
Background technology
It is well known that all in nature are not stopping outside emittance higher than the object of absolute zero, object to
The size of external radiation energy and its distribution by wavelength and its surface temperature have it is very close contact, the temperature of object is got over
Height, the infra-red radiation ability sent is stronger, therefore infrared measurement of temperature is with a wide range of applications.Infrared temperature-test technology is in production
Process monitoring, in control of product quality and monitoring, in terms of equipment on-line fault diagnosis and safeguard protection and the saving energy all
Important function is played.Compared with contact temperature-measuring method, infrared measurement of temperature has response time fast, noncontact, using safety and
The advantages of service life is long.In recent years, to avoid pollution and cross-infection of the mercury clinical thermometer to environment, non-contacting infrared human body
Temperature measurer is technically also developed rapidly, and performance constantly improve, function constantly strengthens, and kind is on the increase, the scope of application
Also constantly expand.Infrared energy is converted into electric signal output by thermal infrared sensor, is the core of infrared temperature-test technology
Part.
The general principle of infrared measurement of temperature is infra-red radiation law：
Ε=σ ε (Tobj4-Tamb4)
In formula, E is ir radiant power density, and σ is Stefan-Boltzmann constant, and ε is the infrared emittance of object,
Tobj is the temperature of infrared radiating object, and unit is K, and Tamb is the environment temperature around object, and unit is K.Therefore, infrared survey
The infrared signal that middle benefit gas infrared sensor is measured is difference signals.To measure the temperature of infrared target, it is necessary to by sensor ring
Border temperature substitutes into the compensation that calculation formula carries out environment temperature, and sensor can be directly affected to the measurement accuracy of circumstance temperature temperature
Infrared measurement of temperature result.
As shown in figure 1, the thermopile infrared sensor applied to infrared measurement of temperature is typically all by thermistor and thermoelectric pile
Sensor is packaged together, including：Base 15；Thermistor 11 and thermopile IR positioned at the upper surface of base 15 are sensed
Device chip 12；Positioned at the upper surface of base 15, and it is packaged in the thermistor 11 and the thermopile infrared sensor core
The pipe cap 14 of the periphery of piece 12, the top of pipe cap 14 is provided with through hole；Infrared Lens 13, are fixed on the pipe cap 14 and cover completely
Cover the through hole；Base pin 16, one end is extended to via the bottom of the base 15 above the upper surface of the base 15, institute
Thermistor 11 is stated by bonding wire 17 with being wherein connected with the base pin 16, the thermopile infrared sensor chip 12
It is connected by bonding wire 17 with the base 15 and another base pin 16.Wherein, the thermopile infrared sensor core
Piece 12 is used to measure infrared intensity, measures the temperature difference of target object and environment temperature, and the thermistor 11 is then straight
Measuring environment temperature is connect, the compensation for environment temperature.It is existing due to error can be introduced in the encapsulation process of thermistor 11
The precision of the thermistor 11 of infrared measurement of temperature generally is ± 3%~± 5%.Therefore used in thermopile infrared sensor
During, it is required for calibrating the thermistor 11, to improve measurement of the thermopile infrared sensor to environment temperature
Precision.To carry out accurate alignment, it is necessary to which the infrared probe of infrared measurement of temperature is partially immersed in into constant temperature ring to the thermistor 11
The thermistor 11 is calibrated with obtaining stationary temperature environment, it is necessary to wait long in border, causes environment temperature to calibrate
Difficulty is big and prover time is long.In addition, during sensor use, typically can assembling structure part on a sensor, so as to make
Into during environment temperature correction, there is thermograde in the temperature and structural member of sensor so that the calibration of thermistor 11 is inaccurate
Really.And the thermistor 11 calibrate it is inaccurate further cause ambient temperature measurement low precision, infrared measurement of temperature error is big.
By integrated thermal electric heap sensor chip and temperature measurement circuit chip, sensor is demarcated into environment temperature before dispatching from the factory,
And environment temperature calibration result is stored on temperature measurement circuit chip, it can also realize environment temperature in infrared sensor practical application
Calibration-free.But temperature measurement circuit chip needs increase memory cell with storage environment temperature calibration result, adds device cost.And
And there is the risk of data storage loss in data storage cell, reduce the reliability of sensor.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of environment temperature calibration-free
Thermopile infrared sensor, for solving to need to heat before the use that thermopile infrared sensor of the prior art is present
Quick resistance is calibrated, and calibration difficulty is big, time-consuming, and calibration accuracy is poor, so that the problem of measurement accuracy is poor.
In order to achieve the above objects and other related objects, the utility model provides a kind of thermoelectric pile of environment temperature calibration-free
Infrared sensor, the thermopile infrared sensor of the environment temperature calibration-free includes：
Thermopile infrared sensor chip；
Thermistor；
Thermistor matching resistor, the resistance of the thermistor matching resistor and the temperature-sensitive under identical temperature conditionss
The resistance of resistance is identical.
It is used as a kind of preferred scheme of the thermopile infrared sensor of environment temperature calibration-free of the present utility model, the heat
Quick Top Resistance is provided with thermal conductivity material clad.
It is used as a kind of preferred scheme of the thermopile infrared sensor of environment temperature calibration-free of the present utility model, the ring
The thermopile infrared sensor of border temperature calibration-free also includes：
Base；The thermopile infrared sensor chip and the thermistor are respectively positioned on the upper surface of the base, and
The thermopile infrared sensor chip is mutually separated with spacing with the thermistor；
Pipe cap, is covered in the base top, and positioned at the thermopile infrared sensor chip and the thermistor
Periphery；The top of the pipe cap is provided with through hole；
Infrared Lens, are fixed on the pipe cap, and the through hole is completely covered.
It is used as a kind of preferred scheme of the thermopile infrared sensor of environment temperature calibration-free of the present utility model, the ring
The thermopile infrared sensor of border temperature calibration-free also includes several base pins, and described base pin one end is from the base
Bottom extend to the over top of the base；One electrode pin of the thermistor is drawn by bonding wire with base described in one
Pin is connected, and another electrode pin is connected by bonding wire with the base；One electricity of the thermopile infrared sensor chip
Pole pin is connected by bonding wire with another base pin, and another electrode pin is connected by bonding wire with the base.
It is used as a kind of preferred scheme of the thermopile infrared sensor of environment temperature calibration-free of the present utility model, the heat
Quick resistance matching resistor is located at the upper surface of the base, and on the inside of the pipe cap.
It is used as a kind of preferred scheme of the thermopile infrared sensor of environment temperature calibration-free of the present utility model, the heat
Quick resistance is the thermistor after being adjusted using laser resistor trimming technique to its size, and the thermistor is under fixed temperature
Resistance determined before the base and the pipe cap soldering and sealing.
It is used as a kind of preferred scheme of the thermopile infrared sensor of environment temperature calibration-free of the present utility model, the heat
Quick resistance matching resistor is located at the lower section of the base or positioned at the top of the base and positioned at the outside of the pipe cap.
As described above, the thermopile infrared sensor of environment temperature calibration-free of the present utility model, with following beneficial effect
Really：The thermopile infrared sensor of the environment temperature calibration-free of the present utility model is by setting up the heat matched with thermistor
Quick resistance matching resistor, can be achieved accurate measurement without being calibrated to thermistor during use, improve
The reliability of device, has the advantages that easy to use, cost performance is high.
Brief description of the drawings
Fig. 1 is shown as the cross section structure schematic diagram of thermopile infrared sensor of the prior art.
The cross section structure that Fig. 2 and Fig. 3 are shown as the thermopile infrared sensor of the utility model environment temperature calibration-free shows
It is intended to；Wherein, thermistor matching resistor is packaged on same base with thermistor in Fig. 2, thermistor pairing electricity in Fig. 3
Resistance is separately individually encapsulated with thermistor.
Component label instructions
11 quick resistance
12 thermopile infrared sensor chips
13 Infrared Lens
14 pipe caps
15 bases
16 base pins
17 bonding wires
21 thermistors
22 thermopile infrared sensor chips
23 Infrared Lens
24 pipe caps
25 bases
26 base pins
27 bonding wires
28 thermistor matching resistors
29 heat-conducting glues
Embodiment
Illustrate embodiment of the present utility model below by way of specific instantiation, those skilled in the art can be by this theory
Content disclosed by bright book understands other advantages of the present utility model and effect easily.The utility model can also be by addition
Different embodiments are embodied or practiced, and the various details in this specification can also be based on different viewpoints with answering
With, without departing from it is of the present utility model spirit under carry out various modifications or alterations.
Refer to Fig. 2 and Fig. 3.It should be noted that the diagram provided in the present embodiment only illustrates this in a schematic way
The basic conception of utility model, though only display is with relevant component in the utility model rather than according to during actual implement in diagram
Component count, shape and size are drawn, and form, quantity and the ratio of each component can change for a kind of random during its actual implementation
Become, and its assembly layout form may also be increasingly complex.
Referring to Fig. 2, the utility model provides a kind of thermopile infrared sensor of environment temperature calibration-free, the environment
The thermopile infrared sensor of temperature calibration-free includes：Thermopile infrared sensor chip 22；Thermistor 21；Thermistor is matched somebody with somebody
To resistance 28, the resistance phase of the resistance of the thermistor matching resistor 28 and the thermistor 21 under identical temperature conditionss
Together.The thermopile infrared sensor of the environment temperature calibration-free of the present utility model is matched somebody with somebody by setting up with the thermistor 21
To the thermistor matching resistor 28, and the resistance of the thermistor matching resistor 28 and the institute under identical temperature conditionss
The resistance for stating thermistor 21 is identical, can only be needed to survey without calibrating the thermistor 21 during use
The resistance for measuring the thermistor matching resistor 28 may know that resistance of the thermistor 21 under corresponding temperature, so that real
Now accurate measurement, improves the reliability of device, has the advantages that easy to use, cost performance is high.
It should be noted that the resistance test acquisition, i.e. root in advance that the thermistor 21 corresponds under different temperatures
According to the resistance of the thermistor 21, you can learn the temperature corresponding to the resistance, i.e., environment temperature now.
As an example, the top of thermistor 21 is provided with thermal conductivity material clad, it is preferable that the thermal conductivity
Material clad can be but be not limited only to conducting resinl.
As an example, the thermopile infrared sensor of the environment temperature calibration-free also includes：Base 25；The thermoelectric pile
Infrared sensor chip 22 and the thermistor 21 are respectively positioned on the upper surface of the base 25, and the thermopile IR is sensed
Device chip 22 is mutually separated with spacing with the thermistor 21；Pipe cap 24, it is described；Pipe cap 24 is covered in the top of base 25, and
Positioned at the periphery of the thermopile infrared sensor chip 22 and the thermistor 21；The top of the pipe cap 25 is provided with logical
Hole；Infrared Lens 23, the Infrared Lens 23 are fixed on the pipe cap 24, and the through hole is completely covered.
As an example, the thermopile infrared sensor of the environment temperature calibration-free also includes several base pins 26,
Described one end of base pin 26 extends to the over top of the base 25 from the bottom of the base 25；The thermistor 21
An electrode pin (not shown) be connected by bonding wire 27 with base pin described in one 26, another electrode pin (not shown) lead to
Bonding wire 27 is crossed with the base 25 to be connected；One electrode pin (not shown) of the thermopile infrared sensor chip 22 passes through
Bonding wire 27 is connected with another base pin 26, and another electrode pin (not shown) passes through bonding wire 27 and the phase of base 25
Connection.An electrode pin and the thermoelectricity for the thermistor 21 to an electrode pin of infrared sensor chip 22 and institute
State base 25 to be connected, it is possible to achieve the short circuit of the thermistor 21 and the infrared sensor chip 22；The temperature-sensitive electricity
Another electrode pin and the thermoelectricity of resistance 21 to another electrode pin of infrared sensor 22 with the phase of base pin 26
Connection, can cause the thermistor 21 to be consistent with the thermoelectricity to the temperature of infrared sensor 22.
It should be noted that when the thermistor 21 is connected by the bonding wire 27 with the base pin 26,
Need to be formed solder joint (not shown) at the top of the thermistor 21 in order to connect, now, the conducting resinl is coated on institute
The periphery of solder joint is stated, to reduce the temperature difference of the top and bottom of thermistor 21, to realize the thermistor 21 to ring
The accurate measurement of border temperature.
In one example, as shown in Fig. 2 thermistor matching resistor 28 is located at the upper surface of the base 25, and it is located at
The inner side of pipe cap 24, i.e., described thermistor matching resistor 28 is packaged on same base with the thermistor 21.Now,
The thermistor 21 is the thermistor after being adjusted using methods such as laser resistor trimming techniques to its size, by described
The size of thermistor 21 carries out laser resistor trimming, can accurately control the resistance of the thermistor 21.Certainly, in other examples
In, the accurate control of the resistance of the thermistor 21 can also be realized by setting the material of the thermistor 21.Institute
Resistance of the thermistor 21 under fixed temperature is stated to determine before the base 25 and the soldering and sealing of pipe cap 24.
In another example, thermistor matching resistor 28 is located at the lower section of the base 25 or positioned at the base 25
Top and the outside for being located at the pipe cap 24, i.e., described thermistor matching resistor 28 and the thermistor 21 separate independent envelope
Dress.As shown in figure 3, the base can be fixed on when the thermistor matching resistor 28 is located at the lower section of the base 25
On pin 26.Now, it is controlled without the size to the thermistor 21, the thermistor 21 is under fixed temperature
Resistance can be determined after the base 25 and the soldering and sealing of pipe cap 24, it is of course also possible in the base 25 and the pipe cap
Determined after 24 soldering and sealing.
In summary, the utility model provides a kind of thermopile infrared sensor of environment temperature calibration-free, the environment
The thermopile infrared sensor of temperature calibration-free includes：Thermopile infrared sensor chip；Thermistor；Thermistor pairing electricity
Resistance, the resistance of the thermistor matching resistor is identical with the resistance of the thermistor under identical temperature conditionss.This practicality
The thermopile infrared sensor of the new environment temperature calibration-free is matched somebody with somebody by setting up the thermistor matched with thermistor
To resistance, accurate measurement can be achieved without being calibrated to thermistor during use, improve device
Reliability, has the advantages that easy to use, cost performance is high.
Above-described embodiment only illustrative principle of the present utility model and its effect are new not for this practicality is limited
Type.Any person skilled in the art can all be carried out without prejudice under spirit and scope of the present utility model to above-described embodiment
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in the utility model
God and all equivalent modifications completed under technological thought or change, should be covered by claim of the present utility model.
Claims (7)
1. a kind of thermopile infrared sensor of environment temperature calibration-free, it is characterised in that the heat of the environment temperature calibration-free
Pile infrared sensor includes：
Thermopile infrared sensor chip；
Thermistor；
Thermistor matching resistor, the resistance of the thermistor matching resistor and the thermistor under identical temperature conditionss
Resistance it is identical.
2. the thermopile infrared sensor of environment temperature calibration-free according to claim 1, it is characterised in that：The temperature-sensitive
Top Resistance is provided with thermal conductivity material clad.
3. the thermopile infrared sensor of environment temperature calibration-free according to claim 1 or 2, it is characterised in that：It is described
The thermopile infrared sensor of environment temperature calibration-free also includes：
Base；The thermopile infrared sensor chip and the thermistor are respectively positioned on the upper surface of the base, and described
Thermopile infrared sensor chip is mutually separated with spacing with the thermistor；
Pipe cap, is covered in the base top, and positioned at the outer of the thermopile infrared sensor chip and the thermistor
Enclose；The top of the pipe cap is provided with through hole；
Infrared Lens, are fixed on the pipe cap, and the through hole is completely covered.
4. the thermopile infrared sensor of environment temperature calibration-free according to claim 3, it is characterised in that：The environment
The thermopile infrared sensor of temperature calibration-free also includes several base pins, and described base pin one end is from the base
Bottom extends to the over top of the base；One electrode pin of the thermistor passes through base pin described in bonding wire and one
It is connected, another electrode pin is connected by bonding wire with the base；One electrode of the thermopile infrared sensor chip
Pin is connected by bonding wire with another base pin, and another electrode pin is connected by bonding wire with the base.
5. the thermopile infrared sensor of environment temperature calibration-free according to claim 4, it is characterised in that：The temperature-sensitive
Resistance matching resistor is located at the upper surface of the base, and on the inside of the pipe cap.
6. the thermopile infrared sensor of environment temperature calibration-free according to claim 5, it is characterised in that：The temperature-sensitive
Resistance is the thermistor after being adjusted using laser resistor trimming technique to its size, and the thermistor hinders under fixed temperature
Value is determined before the base and the pipe cap soldering and sealing.
7. the thermopile infrared sensor of environment temperature calibration-free according to claim 6, it is characterised in that：The temperature-sensitive
Resistance matching resistor is located at the lower section of the base or positioned at the top of the base and positioned at the outside of the pipe cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720104225.0U CN206469985U (en) | 2017-01-26 | 2017-01-26 | The thermopile infrared sensor of environment temperature calibration-free |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720104225.0U CN206469985U (en) | 2017-01-26 | 2017-01-26 | The thermopile infrared sensor of environment temperature calibration-free |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206469985U true CN206469985U (en) | 2017-09-05 |
Family
ID=59704455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720104225.0U Active CN206469985U (en) | 2017-01-26 | 2017-01-26 | The thermopile infrared sensor of environment temperature calibration-free |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206469985U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560736A (en) * | 2017-09-20 | 2018-01-09 | 深圳市美思先端电子有限公司 | A kind of thermopile IR temperature sensor applied to electromagnetic oven and preparation method thereof |
| CN109579999A (en) * | 2017-09-29 | 2019-04-05 | 青岛海尔特种电冰柜有限公司 | Infrared sensor detects temperature correction method, system and refrigerator |
-
2017
- 2017-01-26 CN CN201720104225.0U patent/CN206469985U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560736A (en) * | 2017-09-20 | 2018-01-09 | 深圳市美思先端电子有限公司 | A kind of thermopile IR temperature sensor applied to electromagnetic oven and preparation method thereof |
| CN109579999A (en) * | 2017-09-29 | 2019-04-05 | 青岛海尔特种电冰柜有限公司 | Infrared sensor detects temperature correction method, system and refrigerator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108362387A (en) | The thermopile infrared sensor of environment temperature calibration-free | |
| US20080071189A1 (en) | Temperature Measurement Device | |
| US7981046B2 (en) | Temperature measurement device | |
| CN206469985U (en) | The thermopile infrared sensor of environment temperature calibration-free | |
| CN107037077A (en) | Specific heat capacity of lithium ion battery determines device and assay method | |
| CN107677376B (en) | A kind of plant temperature measuring equipment and method | |
| CN112903117A (en) | MEMS thermopile infrared detector | |
| US20090207882A1 (en) | Temperature Sensor Module | |
| CN107063493B (en) | Dual-purpose temperature-measuring and heating sensor | |
| RU2577389C1 (en) | Method of calibrating thermoelectric heat flux sensors | |
| CN206228335U (en) | A kind of ear temperature meter with heating function | |
| CN210487079U (en) | Infrared temperature sensor, probe comprising same and infrared thermometer | |
| CN206504800U (en) | A kind of thermo bimetal valve snail optically-active dial thermometer | |
| CN111207840A (en) | Surface emissivity on-line testing device and method thereof | |
| CN207215307U (en) | The double remaining temperature-sensing element (device)s of enwinding type | |
| CN111239479B (en) | Integrated self-calibration radiation power sensing chip and radiation power measuring method | |
| CN205483267U (en) | Improve industrial field thermal imaging system temperature measurement's device | |
| CN109632148A (en) | A kind of sophisticated testing scene temperature calibration system and method | |
| CN109540316A (en) | A kind of self-calibration double-thermocouple thermometer and temp measuring method based on standard platinum resistance thermometer | |
| CN204556134U (en) | Contact heat radiation optical fiber three colour pyrometer | |
| CN108254094A (en) | A kind of three galvanic couple structure of temperature survey copolar | |
| CN108801488A (en) | A kind of thermocouple temperature measurement cold junction compensation system | |
| CN218524257U (en) | Needle type temperature measuring probe | |
| CN104776935B (en) | The colour pyrometer of contact heat radiation optical fiber three | |
| CN213812665U (en) | Temperature sensitive diode calibrating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" | ||
| CP03 | "change of name, title or address" |
Address after: 201800 room 236, 2 / F, building 2, 1399 Shengzhu Road, Juyuan New District, Jiading District, Shanghai Patentee after: Shanghai Yeying Microelectronics Technology Co.,Ltd. Address before: 201800 room j310, building 1, No. 2222, Huancheng Road, Juyuan New District, Jiading District, Shanghai Patentee before: SHANGHAI YEYING ELECTRONIC TECHNOLOGY Co.,Ltd. |