CN208188611U - A kind of temperature measurement circuit and induction temperature sensing device and cooker based on twin coil - Google Patents
A kind of temperature measurement circuit and induction temperature sensing device and cooker based on twin coil Download PDFInfo
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- CN208188611U CN208188611U CN201820252494.6U CN201820252494U CN208188611U CN 208188611 U CN208188611 U CN 208188611U CN 201820252494 U CN201820252494 U CN 201820252494U CN 208188611 U CN208188611 U CN 208188611U
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Abstract
The utility model discloses a kind of temperature measurement circuits based on twin coil, including magnetoelectricity conversion sub-circuit, detection sub-circuit, drive sub-circuits and micro-chip processor；The output end of magnetoelectricity conversion sub-circuit is electrically connected with the input terminal of detection sub-circuit；The output end of detection sub-circuit is electrically connected with the first input end of micro-chip processor；The output end of micro-chip processor is electrically connected with the input terminal of drive sub-circuits；The output end of drive sub-circuits is electrically connected with the input terminal of magnetoelectricity conversion sub-circuit.The utility model obtains alternating magnetic field by magnetoelectricity conversion sub-circuit, obtains detection signal using analysis detection sub-circuit, micro-chip processor obtains heating temperature situation of change by detecting signal.The utility model is simple for structure, is swift in response, the temperature variations of the tested electric heating module of the electric signal and actual response of energy real-time detection oscillating circuit.
Description
Technical field
The utility model relates to thermometry fields, more particularly, to a kind of temperature measurement circuit based on twin coil.Together
When, the utility model further relates to a kind of induction temperature sensing device and cooker with electromagnetic induction temperature measurement circuit.
Background technique
Thermometry field at present, only by temperature-sensitive detecting element temperature collection signal, then will by A/D analog-digital converter
Collected temperature signal is converted into digital signal, for micro-chip processor read temperature, this mode, not only detection accuracy compared with
It is low, and circuit cost is relatively high.
Utility model content
The utility model overcomes the defect of existing thermometry, provides a kind of new thermometric based on twin coil inductance
Circuit.The utility model is simple for structure, is swift in response, the tested electricity of the electric signal and actual response of energy real-time detection oscillating circuit
The temperature variations of heating module.
In order to solve the above technical problems, the technical solution of the utility model is as follows:
A kind of induction temperature sensing circuit based on twin coil inductance, the temperature measurement circuit include magnetoelectricity conversion sub-circuit, inspection
Survey sub-circuit, drive sub-circuits and micro-chip processor, wherein
The magnetoelectricity conversion sub-circuit obtains electromagnetic signal for converting electric energy to magnetic energy；
The detection sub-circuit obtains detection signal for detecting to the electric signal of magnetoelectricity conversion sub-circuit；
The micro-chip processor is used for the detection signal and output pulse signal of analysis detection sub-circuit；
The drive sub-circuits obtain driving signal, drive for amplifying the pulse signal of micro-chip processor
Signal is for driving magnetoelectricity conversion sub-circuit；
Its connection relationship is as follows:
The magnetoelectricity conversion sub-circuit carries out magnetic energy measurement to electric heating module；
The output end of the magnetoelectricity conversion sub-circuit is electrically connected with the input terminal of detection sub-circuit；
The output end of the detection sub-circuit is electrically connected with the input terminal of micro-chip processor；
The output end of the micro-chip processor is electrically connected with the input terminal of drive sub-circuits；
The output end of the drive sub-circuits is electrically connected with the input terminal of magnetoelectricity conversion sub-circuit;The magnetoelectricity conversion
Sub-circuit includes first capacitor and two-winding transformer, wherein
Input terminal of the one end of the primary coil of the two-winding transformer as magnetoelectricity conversion sub-circuit, twin coil become
The other end of the primary coil of depressor is electrically connected with one end of first capacitor；
The other end of the first capacitor is grounded；
Output end of the one end of the secondary coil of the two-winding transformer as magnetoelectricity conversion sub-circuit, twin coil become
The other end of the secondary coil of depressor is grounded.
In this preferred embodiment, two-winding transformer provides the function of electromagnetic induction of inductance and the isolation sampling function of transformer
Energy.
In a preferred solution, the detection sub-circuit includes rectification electron current and filtering sub-circuit, wherein
Input terminal of the input terminal of the rectification electron current as detection sub-circuit, rectifies the output end conduct of electron current
Detect the output end of sub-circuit；
The input terminal of the filtering sub-circuit is electrically connected with the output end of rectification electron current；
The output end ground connection of the filtering sub-circuit.
In a preferred solution, the rectification electron current includes diode, and the anode of diode is as commutator
The input terminal of electric current, output end of the cathode of diode as rectification electron current.
In a preferred solution, the filtering electron current includes filter capacitor, the anode of the filter capacitor
As the input terminal of filtering sub-circuit, output end of the cathode of filter capacitor as filtering sub-circuit.
In a preferred solution, the filtering electron current includes first resistor, second resistance, 3rd resistor,
Two capacitors, operational amplifier, wherein
Input terminal of the one end of the first resistor as filtering electron current, the other end and operation amplifier of first resistor
The non-inverting input terminal of device is electrically connected；
The other end of the first resistor is electrically connected with one end of the second capacitor；
The other end of second capacitor is grounded；
One end of the second resistance is grounded；
The other end of the second resistance is electrically connected with the inverting input terminal of operational amplifier；
The other end of the second resistance is electrically connected with one end of 3rd resistor；
The other end of the 3rd resistor is electrically connected with the output end of operational amplifier；
Output end of the output end of the operational amplifier as filtering electron current.
This patent additionally provides a kind of induction temperature sensing device, and the induction temperature sensing device includes above-mentioned electromagnetic induction thermometric
Circuit further includes the temperature-sensitive layer that can incude electromagnetic signal caused by magnetoelectricity conversion sub-circuit.
The microprocessor includes the detection being connect with detection sub-circuit to receive, detect electric signal in detection sub-circuit
Analysis module.
The temperature-sensitive layer is made of permalloy or Precise Alloy material.
The induction temperature sensing device further includes temperature-adjusting device, and the microprocessor further includes control module, the control
The input terminal of molding block is connect with module is tested and analyzed, and output end is connect with temperature-adjusting device, and the control module is according to inspection
It surveys the testing result of analysis module and adjusts the temperature level of temperature sensing device by temperature-adjusting device.
This patent additionally provides a kind of cooker, and the cooker is equipped with above-mentioned induction temperature sensing device.
The cooker is gas-cooker, electromagnetic oven, electric cooker or pressure cooker.
Compared with prior art, the beneficial effect of technical solutions of the utility model is:
The utility model is simple for structure, is swift in response, and the electric signal and actual response of energy real-time detection oscillating circuit are tested
Electric heating module temperature variations, and can quickly provide the driving current for meeting demand.
Detailed description of the invention
Fig. 1 is the module map of embodiment.
Fig. 2 is the structural schematic diagram of embodiment 2.
Label declaration: 51. burners, 52. grates, 53. panels, 54. control valves, 55. air inlet pipe, 57. electromagnetic induction thermometrics
Inductance, 4. cookwares, 5. gas-cookers in circuit.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
In order to better illustrate this embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent actual product
Size；
To those skilled in the art, it is to be understood that certain known features and its explanation, which may be omitted, in attached drawing
's.
The technical solution of the utility model is described further with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of temperature measurement circuit based on twin coil, including two-winding transformer, capacitor, detection circuit, drive
Dynamic circuit and microprocessor, wherein
The output end of microprocessor is electrically connected with the input terminal of driving circuit；
The output end of driving circuit is electrically connected with 3 ends of two-winding transformer；
1 end of two-winding transformer is electrically connected with one end of capacitor；
The other end of capacitor is grounded；
4 ends of two-winding transformer are electrically connected with the input terminal of detection circuit；
2 ends of two-winding transformer are grounded；
The output end of detection circuit is electrically connected with the input terminal of micro process core device.
Wherein, detection circuit includes commutation sub-circuit and filtering sub-circuit, and commutation sub-circuit includes diode D1, filtering
Electric current includes filter capacitor EC1, and the anode of diode D1 is electrically connected with 4 ends of two-winding transformer, the cathode of diode D1 and
The anode of filter capacitor EC1 is electrically connected, the minus earth of filter capacitor EC1, and the cathode of diode D1 is defeated with micro process core device
Enter end electrical connection.
The course of work of embodiment:
The magnetoelectricity conversion circuit being made of two-winding transformer and capacitor converts electric energy to magnetic energy, and detection circuit is to magnetoelectricity
The electric signal of conversion sub-circuit carries out rectifying and wave-filtering, obtains detection signal.Microprocessor is used for the detection of analysis detection sub-circuit
Signal, driving circuit obtain driving current, driving current is for driving magnetic for amplifying the pulse signal of microprocessor
Power conversion circuit.
Embodiment 2
This patent additionally provides a kind of cooker, such as gas-cooker, including gas-cooker 5 and is placed in cooking for 5 top of gas-cooker
It prepares food utensil 4, which is preferably cookware 4, and the gas-cooker 5 includes burner 51, grate 52, panel 53,55 and of air inlet pipe
Control valve 54, panel 53 are equipped with mounting hole, and burner 51 is set in mounting hole, and grate 52 is set on panel 53, grate 52 and furnace
First 51 arrange in concentric circles, i.e., grate 52 is set on the periphery of burner 51, to support heating object.The air inlet pipe 55 and furnace
First 51 connection, to provide pipeline for gas supply, the air inlet pipe 55 is equipped with control valve 54, i.e. temperature-adjusting device, should
Control valve 54 can be solenoid valve or other valves with regulating gas air-flow magnitude function.In the electromagnetic induction temperature measurement circuit
Inductance 57 be preferably fixed to above or below burner 51.
As another preferred embodiment, the cookware 4, which is equipped with, can incude electromagnetism caused by magnetoelectricity conversion sub-circuit
The temperature-sensitive layer 41 of signal.The temperature-sensitive layer 41 both can be made cookware entirety, can also be used as a part of cookware, passes through riveting
It connects, weld, meltallizing, the methods of printing make it be combined with each other with cookware main body.When temperature-sensitive layer 11 be arranged at 1 bottom of cookware,
It can both be individually composed 4 bottom of cookware, can also be compounded in 4 bottom of cookware, become a part of 4 bottom of cookware, multiple with regard to it
For coincidence is set, temperature-sensitive layer 41 can both be located at the upper surface of 4 bottom of cookware, can also be located at the lower surface of 4 bottom of cookware.Institute
Cookware bottom is stated, i.e. the bottom of a pan part both can be single layer designs, or compound design, for example, the bottom of a pan is by aluminium sheet, steel
One or more of plate, copper sheet or iron plate, which are combined with each other, to be formed.When 4 bottom of cookware is composite design, the temperature-sensitive
Layer 41 can also be set between the upper and lower surfaces of the bottom of a pan.Certainly, for three-dimensional heating, the temperature-sensitive layer can also be set
It sets at pot body position.
In addition, the temperature-sensitive layer 41 can also be respectively set with cookware 41, for example temperature-sensitive layer 41 is independent as one
Component is arranged on grate, then the vessel such as placing cooker on temperature-sensitive layer.
The temperature-sensitive layer 41 has high magnetic permeability, and the temperature-sensitive layer 41 is made of ferromagnetism or ferrimagnetic material, such as
Permalloy, Precise Alloy, in curie point, meeting bust to zero or near zero, so-called permalloy, that is, iron nickel closes magnetic conductivity
Gold, 41 magnetic conductivity of temperature-sensitive layer are preferably 2000~200000H/m, and resistivity is preferably 30~130 μ Ω cm.
For the present embodiment, the Precise Alloy material is preferably that the triumphant metallurgical metal products in the Shanghai Precise Alloy 4J36(have
The production of limit company) or the triumphant metallurgical metal products Co., Ltd production in the Shanghai Precise Alloy 4J32(), 41 thickness of temperature-sensitive layer is preferred
It is 0.1 to 3 millimeter, the present embodiment is 1.5 millimeters.
The temperature-sensitive layer 41 structure in the form of sheets, is compounded in the bottom of cookware 4, can also be by powdered or granular precision
Alloy material composition, and it is attached to 4 bottom of cookware.
For this patent, it is clear that all have the above resistivity or ferromagnetism varies with temperature and the temperature-sensitive layer material that changes
Material can be adapted for this patent, the present embodiment it is preferable to use permalloy or the Curie-point temperature of Precise Alloy material exist
Precise Alloy material between 30 degrees Celsius to 500 degrees Celsius, further preferred Curie-point temperature is at 70 degrees Celsius to 400 degrees Celsius
Between Precise Alloy material, for the type of Precise Alloy material, it is preferable to use following alloy materials for this implementation:
So-called permalloy is also known as iron-nickel alloy, and wherein the content of iron is 35~70%, further preferably 63~67%, nickel
Content 30~65%, further preferably 37~58%.Iron-nickel alloy has a high magnetic permeability, and curie point can bust to close
Space permeability.
The electromagnetic induction temperature measurement circuit, temperature-sensitive layer 41 form induction temperature sensing device.
The microprocessor of the electromagnetic induction temperature measurement circuit includes connecting with the detection sub-circuit to receive, detecting
The detection and analysis module of electric signal in sub-circuit is surveyed, the electric signal can be voltage or electric current etc..
The microprocessor further includes control module, and the input terminal of the control module is connect with module is tested and analyzed, defeated
The outlet temperature-adjusting device connection similar with control valve 54 etc., the control module is according to the testing result for testing and analyzing module
And the temperature level of temperature sensing device is adjusted by temperature-adjusting device.Specifically, the magnetoelectricity conversion circuit converts electrical energy into
For magnetic energy, electromagnetic signal is generated, and acts on temperature-sensitive layer, the electromagnetic signal is acted on temperature-sensitive layer and declined by the loss of temperature-sensitive layer
Subtracting, the electric signals such as electric current, voltage in magnetoelectricity conversion sub-circuit and detection sub-circuit change with the variation of temperature-sensitive layer temperature, and
Specific corresponding relationship is formed, i.e., sense can be deduced by the variation of electric signal in detection magnetoelectricity conversion sub-circuit or detection sub-circuit
The temperature of warm layer.
On the basis of thermometric, this patent can also realize the control to temperature, by taking voltage signal as an example, the control mould
The input terminal of block is connect with module is tested and analyzed, and output end is connect with control valve, is tested and analyzed module and is detected detection sub-circuit
In voltage signal after, see if fall out initially set minimum or peak, when going beyond the scope, control module by contrast
Temperature-adjusting device, i.e. control valve will be adjusted, gas quantity size, the final firepower size for adjusting cooker, to reach are controlled
To the effect for adjusting 41 temperature of temperature-sensitive layer；When current firepower will be kept without departing from range, to guarantee the temperature dimension of temperature-sensitive layer
It holds in certain section.
Above-mentioned cooker can also be electromagnetic oven, electric cooker, pressure cooker etc. other than gas-cooker.
The same or similar label correspond to the same or similar components；
The terms describing the positional relationship in the drawings are only for illustration, should not be understood as the limitation to this patent；
Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the protection scope of the utility model claims.
Claims (11)
1. a kind of temperature measurement circuit based on twin coil, which is characterized in that the temperature measurement circuit includes magnetoelectricity conversion sub-circuit, inspection
Survey sub-circuit, drive sub-circuits and micro-chip processor, wherein the magnetoelectricity conversion sub-circuit is for converting electric energy to magnetic
Can, obtain electromagnetic signal；
The detection sub-circuit obtains detection signal for detecting to the electric signal of magnetoelectricity conversion sub-circuit；
The micro-chip processor is used for the detection signal and output pulse signal of analysis detection sub-circuit；
The drive sub-circuits obtain driving signal, driving signal for amplifying the pulse signal of micro-chip processor
For driving magnetoelectricity conversion sub-circuit；
Its connection relationship is as follows:
The output end of the magnetoelectricity conversion sub-circuit is electrically connected with the input terminal of detection sub-circuit；
The output end of the detection sub-circuit is electrically connected with the input terminal of micro-chip processor；
The output end of the micro-chip processor is electrically connected with the input terminal of drive sub-circuits；
The output end of the drive sub-circuits is electrically connected with the input terminal of magnetoelectricity conversion sub-circuit；
The magnetoelectricity conversion sub-circuit includes first capacitor and two-winding transformer, wherein
Input terminal of the one end of the primary coil of the two-winding transformer as magnetoelectricity conversion sub-circuit, two-winding transformer
The other end of primary coil be electrically connected with one end of first capacitor；
The other end of the first capacitor is grounded；
Output end of the one end of the secondary coil of the two-winding transformer as magnetoelectricity conversion sub-circuit, two-winding transformer
Secondary coil the other end ground connection.
2. temperature measurement circuit according to claim 1, which is characterized in that the detection sub-circuit include rectification electron current and
Filter sub-circuit, wherein
Input terminal of the input terminal of the rectification electron current as detection sub-circuit, rectifies the output end of electron current as detection
The output end of sub-circuit；
The input terminal of the filtering sub-circuit is electrically connected with the output end of rectification electron current；
The output end ground connection of the filtering sub-circuit.
3. temperature measurement circuit according to claim 2, which is characterized in that the rectification electron current includes diode, two poles
Input terminal of the anode of pipe as rectification electron current, output end of the cathode of diode as rectification electron current.
4. temperature measurement circuit according to claim 2, which is characterized in that the filtering electron current includes filter capacitor, institute
Input terminal of the anode for the filter capacitor stated as filtering sub-circuit, output of the cathode of filter capacitor as filtering sub-circuit
End.
5. temperature measurement circuit according to claim 2, which is characterized in that the filtering electron current includes first resistor,
Two resistance, 3rd resistor, the second capacitor, operational amplifier, wherein
Input terminal of the one end of the first resistor as filtering electron current, the other end of first resistor and operational amplifier
Non-inverting input terminal electrical connection；
The other end of the first resistor is electrically connected with one end of the second capacitor；
The other end of second capacitor is grounded；
One end of the second resistance is grounded；
The other end of the second resistance is electrically connected with the inverting input terminal of operational amplifier；
The other end of the second resistance is electrically connected with one end of 3rd resistor；
The other end of the 3rd resistor is electrically connected with the output end of operational amplifier；
Output end of the output end of the operational amplifier as filtering electron current.
6. a kind of induction temperature sensing device, which is characterized in that the induction temperature sensing device includes that claim 1 to 5 is any described
Electromagnetic induction temperature measurement circuit further includes the temperature-sensitive layer that can incude electromagnetic signal caused by magnetoelectricity conversion sub-circuit.
7. induction temperature sensing device according to claim 6, which is characterized in that the microprocessor include and detection sub-circuit
Connect the detection and analysis module to receive, detect electric signal in detection sub-circuit.
8. induction temperature sensing device according to claim 6, which is characterized in that the temperature-sensitive layer is by permalloy or accurate conjunction
Golden material is made.
9. induction temperature sensing device according to claim 7, which is characterized in that the induction temperature sensing device further includes temperature tune
Regulating device, the microprocessor further include control module, and the input terminal of the control module is connect with module is tested and analyzed, and are exported
End is connect with temperature-adjusting device, and the control module is according to the testing result for testing and analyzing module and passes through temperature-adjusting device
Adjust the temperature level of temperature sensing device.
10. a kind of cooker, which is characterized in that the cooker is equipped with any induction temperature sensing dress of claim 6 to 9
It sets.
11. cooker according to claim 10, which is characterized in that the cooker is gas-cooker, electromagnetic oven, electricity
Pot for cooking rice or pressure cooker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820252494.6U CN208188611U (en) | 2018-02-12 | 2018-02-12 | A kind of temperature measurement circuit and induction temperature sensing device and cooker based on twin coil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820252494.6U CN208188611U (en) | 2018-02-12 | 2018-02-12 | A kind of temperature measurement circuit and induction temperature sensing device and cooker based on twin coil |
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| CN208188611U true CN208188611U (en) | 2018-12-04 |
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| CN201820252494.6U Active CN208188611U (en) | 2018-02-12 | 2018-02-12 | A kind of temperature measurement circuit and induction temperature sensing device and cooker based on twin coil |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550835A (en) * | 2019-02-12 | 2020-08-18 | 陈景超 | Heating device with temperature measuring circuit and control method thereof |
| CN111550834A (en) * | 2019-02-12 | 2020-08-18 | 陈景超 | Temperature measurement module of gas stove and control method |
| CN111551273A (en) * | 2019-02-12 | 2020-08-18 | 陈景超 | Temperature measuring method of electromagnetic induction temperature measuring device |
| CN111550835B (en) * | 2019-02-12 | 2024-06-28 | 陈景超 | Heating device with temperature measuring circuit and control method thereof |
-
2018
- 2018-02-12 CN CN201820252494.6U patent/CN208188611U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550835A (en) * | 2019-02-12 | 2020-08-18 | 陈景超 | Heating device with temperature measuring circuit and control method thereof |
| CN111550834A (en) * | 2019-02-12 | 2020-08-18 | 陈景超 | Temperature measurement module of gas stove and control method |
| CN111551273A (en) * | 2019-02-12 | 2020-08-18 | 陈景超 | Temperature measuring method of electromagnetic induction temperature measuring device |
| CN111550835B (en) * | 2019-02-12 | 2024-06-28 | 陈景超 | Heating device with temperature measuring circuit and control method thereof |
| CN111550834B (en) * | 2019-02-12 | 2024-06-28 | 陈景超 | Temperature measurement module of gas stove and control method |
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Effective date of registration: 20210723 Address after: 527431 Dongjiang Development Zone, liuzu Town, Xinxing County, Yunfu City, Guangdong Province Patentee after: Xinxing hot Smart Home Technology Co.,Ltd. Address before: 526040 room 701, building 5, lihuju, Lianhu West Road, Duanzhou District, Zhaoqing City, Guangdong Province Patentee before: Chen Jingchao |