CN106404209B - A kind of temp measuring method, device and the product using the temperature measuring equipment - Google Patents
A kind of temp measuring method, device and the product using the temperature measuring equipment Download PDFInfo
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- CN106404209B CN106404209B CN201611124407.0A CN201611124407A CN106404209B CN 106404209 B CN106404209 B CN 106404209B CN 201611124407 A CN201611124407 A CN 201611124407A CN 106404209 B CN106404209 B CN 106404209B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/36—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using magnetic elements, e.g. magnets, coils
- G01K7/38—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using magnetic elements, e.g. magnets, coils the variations of temperature influencing the magnetic permeability
Abstract
The invention discloses a kind of temp measuring method, device and using the temperature measuring equipment product, method includes the following steps: A, scan module to the circuit LC send frequency consecutive variations etc. amplitudes electromagnetic wave signal；The inductor iron core for stating the circuit LC is temperature sensitive magnetic core, and the temperature sensitive magnetic core incudes testee temperature；B, whether the detection circuit LC occurs resonance；C, the real-time working parameter of the scan module when resonance occurs for the circuit LC is recorded；D, it is calculated using the real-time working parameter of scan module or inquiry obtains the temperature of testee.The present invention cleverly combines the magnetic conductivity of resonance principle and temperature sensitive magnet with the variation characteristic of temperature, realizes non-contact temperature measuring.The configuration of the present invention is simple is practical, can fast and accurately measure the temperature of testee, is suitble to promote and apply.
Description
Technical field
The present invention relates to Infrared Technique field more particularly to a kind of temp measuring method, device and use the survey
The product of warm device.
Background technique
Traditional non-contact temperature measuring generally uses radiation temperature measurement instrument, i.e., the temperature of measured object is measured by infrared radiation
Degree.This temperature measuring equipment higher cost, structure is complicated, and general only application in the industrial production, does not meet daily life application.
The patent of invention of Patent No. 2010101367842 discloses a kind of contactless temperature-measuring method, discloses utilization
Ferromagnetic magnetic permeability temperature characterisitic realizes contactless temperature-measuring.Its principle is: ferromagnetic magnetic permeability temperature characterisitic is utilized,
When the magnetic induction intensity of magnetic temperature-sensitive element varies with temperature and changes, the magnetic field generated changes, changing magnetic field
Magnetic force line cutting is done to thermometric induction coil, the current or voltage signal of variation will be generated in thermometric induction coil, passes through sense
It should the progress temperature judgement of current or voltage signal.But due to the temperature changing process of object be very slowly, by
The ferromagnetic magnetic permeability variation (i.e. the magnetic induction intensity variation of magnetic temperature-sensitive element) caused by temperature change is also very
Slowly, the current or voltage variation that this slowly varying magnetic induction intensity is reflected is extremely faint, therefore very difficult
With measurement, and error is very big.Therefore the program does not meet daily life application equally.
Therefore, the existing technology needs to be improved and developed.
Summary of the invention
The purpose of the present invention is to provide a kind of higher non-contact temperature measuring methods of measurement accuracy；Second mesh of the invention
Be to provide the temperature measuring equipment for implementing this method, the temperature measuring equipment structure is simple, at low cost, meets daily life application.
Technical scheme is as follows: a kind of temp measuring method, wherein the following steps are included:
A, scan module to the circuit LC send frequency consecutive variations etc. amplitudes electromagnetic wave signal；The electricity in the circuit LC
Sensor iron core is temperature sensitive magnetic core, and the temperature sensitive magnetic core incudes testee temperature；
B, whether the detection circuit LC occurs resonance；
C, the real-time working parameter of the scan module when resonance occurs for the circuit LC is recorded；
D, it is calculated using the real-time working parameter of scan module or inquiry obtains the temperature of testee.
The temp measuring method, wherein in the step A, comprising the following steps:
A1, the swept frequency range that scan module is set；
A2, the scan module frequency sweep in set swept frequency range, to the circuit LC send frequency consecutive variations etc. amplitudes
Electromagnetic wave signal.
The temp measuring method, wherein in the step B, comprising the following steps:
ELECTROMAGNETIC RADIATION SIGNATURE intensity around b11, the record circuit LC；
If the ELECTROMAGNETIC RADIATION SIGNATURE intensity around the circuit b12, LC reaches extreme value, judge that resonance occurs for the circuit LC.
The temp measuring method, wherein in the step B, comprising the following steps:
B21, the circuit LC is monitored using monitoring modular；
B22, the output signal strength for recording monitoring modular；
If the output signal strength of b23, monitoring modular reaches extreme value, judge that resonance occurs for the circuit LC.
The temp measuring method, wherein in the step C, the real-time working parameter of the scan module includes frequency sweep mould
The output frequency of block or the one or more electric parameters that can be accurately derived by output frequency.
The temp measuring method, wherein in the step D, comprising the following steps:
D1, the real-time working parameter query data memory module using scan module；The data memory module is stored with
The corresponding relationship of the temperature of the real-time working parameter and testee of scan module；
D2, query result is returned to, obtains the temperature of testee.
A kind of temperature measuring equipment, wherein include:
The circuit LC: the inductor iron core in the circuit LC is temperature sensitive magnetic core, and the temperature sensitive magnetic core incudes testee temperature；
Scan module: for the circuit LC send frequency consecutive variations etc. amplitudes electromagnetic wave signal；
Resonance detector module: judge whether the circuit LC occurs resonance for detecting；
First logging modle: first logging modle connects with the scan module and the Resonance detector module respectively
It connects, records the real-time working parameter of the scan module when resonance occurs for the circuit LC；
It calculates enquiry module: being connect with first logging modle, based on the real-time working parameter using scan module
It calculates or inquiry obtains the temperature of testee.
The temperature measuring equipment, wherein the scan module is additionally provided with setting module, described in the setting module setting
The swept frequency range of scan module.
The temperature measuring equipment, wherein the Resonance detector module further include:
Second logging modle: for recording the ELECTROMAGNETIC RADIATION SIGNATURE intensity around the circuit LC；
Second judgment module: connecting with first logging modle and the second logging modle respectively, in the circuit LC week
When the ELECTROMAGNETIC RADIATION SIGNATURE intensity enclosed reaches extreme value, judge that the circuit LC occurs resonance and notifies the first logging modle.
The temperature measuring equipment, wherein the Resonance detector module includes:
Monitoring modular: for being monitored to the circuit LC；
Third logging modle: connecting with the monitoring modular, for recording the output signal strength of the monitoring modular；
Third judgment module: it is connect respectively with first logging modle and third logging modle, in the monitoring modular
Output signal strength judge that resonance occurs for the circuit LC when reaching extreme value, and notify the first logging modle.
The temperature measuring equipment, wherein the real-time working parameter of the scan module includes the output frequency of scan module
Or it can accurately be derived by one or more electric parameters of output frequency.
The temperature measuring equipment, wherein the calculating enquiry module includes:
Data memory module: the data memory module is stored with the real-time working parameter and testee of scan module
The corresponding relationship of temperature；
Data inquiry module: connecting with first logging modle and data memory module respectively, records using from first
The real-time working parameter query data memory module for the scan module that module acquires；
Result return module: connecting with the data inquiry module, for returning to query result, obtains the temperature of testee
Degree.
A kind of product using temperature measuring equipment disclosed by the invention is also claimed in the present invention.
Beneficial effects of the present invention: the configuration of the present invention is simple is practical, can fast and accurately measure the temperature of testee,
It can be widely applied in the various daily electric appliances for needing measuring and controlling temp of such as electric cooker, water heater, be suitble to promote and apply.
Detailed description of the invention
Fig. 1 is the flow chart of the temp measuring method of the embodiment of the present invention 1.
Fig. 2 is the flow chart of the temp measuring method of the embodiment of the present invention 2.
Fig. 3 is the flow chart of the temp measuring method of the embodiment of the present invention 3.
Fig. 4 is the flow chart of the temp measuring method of the embodiment of the present invention 4.
Fig. 5 is the flow chart of the temp measuring method of the embodiment of the present invention 5.
Fig. 6 is the module frame chart of the temperature measuring equipment of the embodiment of the present invention 6.
Fig. 7 is the module frame chart of the temperature measuring equipment of the embodiment of the present invention 7.
Fig. 8 is the module frame chart of the temperature measuring equipment of the embodiment of the present invention 8.
Fig. 9 is the module frame chart of the temperature measuring equipment of the embodiment of the present invention 9.
Figure 10 is the module frame chart of the temperature measuring equipment of the embodiment of the present invention 10.
Figure 11 is the real-time working parameter of the scan module of data memory module storage of the invention and the temperature of testee
The corresponding relationship of degree.
Figure 12 is the real-time working parameter area and testee of the scan module of data memory module storage of the invention
Temperature corresponding relationship.
Specific embodiment
The present invention cleverly combines the magnetic conductivity of resonance principle and temperature sensitive magnet with the variation characteristic of temperature, by humorous
The resonance frequency in the circuit LC is judged in vibration, recycles harmonics rate that the inductance value in the circuit LC is calculated, and then utilizes temperature sensitive magnet
Magnetic conductivity and the variation characteristic of temperature temperature value is calculated, cleverly realize non-contact temperature measuring.Certainly, practical application
In, can there are numerous embodiments and mapping mode, based on the above principles to make the objectives, technical solutions, and advantages of the present invention more
Add clear, clear, the present invention is described in more detail as follows in conjunction with drawings and embodiments.It should be noted that following real
Apply described in example " frequency consecutive variations etc. amplitudes electromagnetic wave signal " refer to that amplitude is consistent, frequency is in regular change at any time
The electromagnetic wave signal of change.
Embodiment 1
Present embodiment discloses a kind of temp measuring methods, utilize the variation of the magnetic conductivity and temperature of resonance principle and temperature sensitive magnet
Characteristic combines, and realizes non-contact temperature measuring.
Specifically, one circuit LC of setting, which includes an inductance and the capacitor with the inductance connection, the electricity
The iron core of sense is temperature sensitive magnetic core, and temperature sensitive magnetic core is contacted with testee, incudes the temperature of testee (in certain practical application
It is not necessarily required to that temperature sensitive magnetic core contacts the temperature that can just incude testee with testee, the present embodiment is only to provide one kind
Specific embodiment, it is all temperature sensitive magnetic core may be implemented in the prior art more accurately to incude testee temperature
Technological means is within the scope of the invention).In practical application, temperature and testee (measured point) of temperature sensitive magnetic core
Temperature is consistent, and the temperature of the magnetic conductivity of temperature sensitive magnetic core and temperature sensitive magnetic core has specific relation curve, therefore it can be concluded that LC
The temperature of inductance value and testee (measured point) in circuit has specific relationship, can pass through the inductance value meter in the circuit LC
Calculate the temperature value for surveying object (measured point).It, can be with according to the frequency formula in the circuit LC it is found that in the case where capacitance determines
Calculate inductance value by learning the frequency in the circuit LC, therefore it is only necessary to know that the circuit LC frequency, that is, may know that measured object
The temperature value of body.
Referring to Fig. 1, the temp measuring method of the present embodiment the following steps are included:
A, using scan module to the circuit LC send frequency consecutive variations etc. amplitudes electromagnetic wave signal (i.e. frequency sweep), lead to
The mode for crossing frequency sweep stimulates the circuit LC, brings it about resonance, to derive the resonance frequency in the circuit LC under the state of temperature；It should
The temperature of temperature sensitive magnet and testee the induction testee of the inductor in the circuit LC.
B, whether the detection circuit LC occurs resonance.
C, the real-time working parameter for recording the scan module when resonance occurs for the circuit LC, in practical application, the frequency sweep mould
The real-time working parameter of block includes the output frequency of scan module or the one or more that can be accurately derived by output frequency
Electric parameter, the purpose for recording the real-time working parameter are the output frequencies of scan module when resonance occurring for calculating
(resonance frequency that the output frequency is equal to the circuit LC).
D, the inductance value in the circuit LC is calculated using the real-time working parameter of scan module.
In step B, whether detection object or circuit occur there are many kinds of the modes of resonance, all to be gone out with accurate detection
The conventional technical means whether circuit LC occurs resonance can be adapted for the present invention.
Present embodiment discloses it is a kind of using resonance frequency (or with resonance frequency have determining relationship, can clearly derive
The associated electrical parameters of resonance frequency out) temp measuring method of temperature is calculated, when resonance occurs due to circuit, reaction is very
Obviously, therefore resonance frequency can be accurately obtained；And the frequency formula in the circuit LC is utilized to calculate inductance value, obtained inductance
Value is also accurate；The Current Temperatures of temperature sensitive magnetic core are finally obtained using inductance value-temperature curve of the inductor of temperature sensitive magnetic core,
Since inductance value-temperature curve is in the case where each parameter in the circuit LC determines, curve is that uniquely (this is the object of temperature sensitive magnet
What bulk properties was determined), therefore obtained temperature is also accurate.Temp measuring method accuracy provided in this embodiment is high, and
And measurement method is simple, can be commonly utilized in each field for needing thermometric (certainly, it is contemplated that each element in the circuit LC and lead
The heat resistant requirements of line are preferred for measuring 200 DEG C of temperature below).
Embodiment 2
The present embodiment is the optimization to embodiment 1, referring to fig. 2, specifically:
A1, setting swept frequency range.
A2, the frequency sweep in set swept frequency range, to the circuit LC send frequency consecutive variations etc. amplitudes electromagnetic wave
Signal.
In the present embodiment, according to the characteristic in the circuit LC and testee range of temperature that may be present, Ke Yiyou
The range of first reasonable setting frequency sweep, constantly carries out frequency sweep work in the range, can be improved and detects that the generation of the circuit LC is humorous
The efficiency and accuracy of vibration.
Embodiment 3
The present embodiment is the prioritization scheme to embodiment 1, specifically, the present embodiment proposes whether a kind of circuit detection LC is sent out
The method of raw resonance, as shown in figure 3, in step B, comprising the following steps:
ELECTROMAGNETIC RADIATION SIGNATURE intensity around b11, the record circuit LC；
If the ELECTROMAGNETIC RADIATION SIGNATURE intensity around the circuit b12, LC reaches extreme value, judge that resonance occurs for the circuit LC.
Extreme value in the present embodiment is defined as in swept frequency range, maximum value that ELECTROMAGNETIC RADIATION SIGNATURE intensity can achieve or
Minimum value.
In practical application, due to the circuit LC by consecutive variations etc. the electromagnetic waves of amplitudes influenced, the circuit LC can generate one
Fixed ELECTROMAGNETIC RADIATION SIGNATURE.If the circuit LC is in normal state, the ELECTROMAGNETIC RADIATION SIGNATURE is very faint (i.e. intensity is very low)；If
The circuit LC is in resonant state, then the ELECTROMAGNETIC RADIATION SIGNATURE becomes strongly, so it is easy to whether the detection circuit LC is in
Resonant state.
The present embodiment, can be fast by this detection mode for directly acquiring the ELECTROMAGNETIC RADIATION SIGNATURE intensity around the circuit LC
Speed accurately judges whether the circuit LC occurs resonance.
Embodiment 4
In practical application, since the ELECTROMAGNETIC RADIATION SIGNATURE that the circuit LC issues is fainter, if the directly accurate LC that obtains is returned
ELECTROMAGNETIC RADIATION SIGNATURE intensity around road is to judge whether the circuit LC occurs resonance, and difficulty is bigger, and cost is relatively high, and
There is a certain error, therefore the present embodiment proposes whether another detection circuit LC occurs the method for resonance, as shown in figure 4,
In step B, comprising the following steps:
B21, the circuit LC is monitored using monitoring modular；
B22, the output signal strength for recording monitoring modular；
If the output signal strength of b23, monitoring modular reaches extreme value, judge that resonance occurs for the circuit LC.
Extreme value in the present embodiment is the maximum value that the output signal strength of monitoring modular can achieve in swept frequency range
Or minimum value.
In practical application, due to the circuit LC by consecutive variations etc. the electromagnetic waves of amplitudes influenced, the circuit LC can generate electricity
Magnetostatic wave signal (i.e. ELECTROMAGNETIC RADIATION SIGNATURE), can be set at this time a monitoring modular to electromagnetic wave signal caused by the circuit LC into
The variation of row " monitoring ", the electromagnetic wave signal can directly have an impact monitoring modular, specially influence the output of monitoring modular
Signal strength (output signal strength includes the electric signals such as the output voltage values, current value, output power of monitoring modular).When
When the output signal strength of monitoring modular reaches extreme value, i.e., electromagnetic wave caused by the circuit LC is most strong, is thought at the circuit LC at this time
In resonant state.
This Resonance detector method of the present embodiment indirectly determines that LC is returned using the electric signal of measurement monitoring modular
Whether road is in resonant state, and accuracy is high, highly reliable, more easily realizes.
Embodiment 5
The present embodiment is substantially the same manner as Example 1, unlike, it is swept the present embodiment provides another using what record obtained
The running parameter of frequency module obtains the mode of testee temperature, referring specifically to Fig. 5, comprising the following steps:
D1, the real-time working parameter query data memory module using scan module；In practical application, a data are set
Memory module, the real-time working parameter which is stored with scan module in advance are corresponding with the temperature of testee
Relationship, the real-time working parameter include the output frequency of scan module or can accurately be derived by one or more of output frequency
A electric parameter.Specifically, the corresponding relationship of the temperature of the real-time working parameter and testee of scan module can be with are as follows: storage
The corresponding relationship of the output frequency of scan module or its range and the temperature of testee, or storage can be accurately derived by
The corresponding relationship of the associated electrical parameters of the output frequency of scan module or its range and the temperature of testee.
D2, query result is returned to, obtains the temperature of testee.
In practical application, referring to Figure 11, for the real-time working parameter of the scan module of data memory module storage and tested
The corresponding relationship of the temperature of object.When it is implemented, the real-time working parameter of scan module can be used (for output frequency in Figure 11
The one-to-one form of rate f) and testee temperature T is arranged, and the accuracy of measurement temperature can be improved in this mode, is suitable for
In the application environment more demanding to temperature measurement accuracy or product.
Another set-up mode is referring to Figure 12, for the real-time working parameter area of the scan module of data memory module storage
With the corresponding relationship of the temperature T of testee, this setup, by using the real-time working parameter area of scan module
(being output frequency f range in Figure 12) corresponds with temperature, and this mode can reasonably control thermometric error range,
Suitable for the application environment or product of less demanding to temperature measurement accuracy.
It should be noted that Figure 11 and Figure 12 are to express the second running parameter in data memory module and be tested
Corresponding relationship between object temperature: can be using the one-to-one corresponding relationship such as Figure 11, it can also be using such as Figure 12
Second running parameter range corresponds to the corresponding relationship of actual temp, naturally it is also possible to use the second running parameter range corresponding temperature
The corresponding relationship of range.In practical applications, T1-T9 is specific temperature value.
A kind of mode of inquiry acquisition testee temperature is present embodiments provided, this mode can know frequency sweep mould
When the real-time working parameter of block, directly inquiry obtains testee temperature, needs not move through complicated calculating, more efficient, more
Add simple and fast.
Embodiment 6
Present embodiment discloses a kind of temperature measuring equipments, utilize the variation of the magnetic conductivity and temperature of resonance principle and temperature sensitive magnet
Characteristic combines, and realizes non-contact temperature measuring.
Specifically, one circuit LC of setting, which includes an inductance and the capacitor with the inductance connection, the electricity
The iron core of sense is temperature sensitive magnetic core, the temperature of temperature sensitive magnetic core induction testee (or the temperature for incuding measured point is placed at measured point
Degree).In practical application, the temperature of temperature sensitive magnetic core is consistent with the temperature of testee (measured point), and the magnetic conductivity of temperature sensitive magnetic core
There is specific relation curve with the temperature of temperature sensitive magnetic core, therefore it can be concluded that inductance value and testee (quilt in the circuit LC
Measuring point) temperature have specific relationship, can by the inductance value calculation in the circuit LC go out survey object (measured point) temperature value.
According to the frequency formula in the circuit LC it is found that can be calculated by learning the frequency in the circuit LC in the case where capacitance is determined
Inductance value, therefore it is only necessary to know that the circuit LC frequency (or knowing the relevant parameter that can accurately derive the frequency), i.e.,
It may know that the temperature value of testee.
Referring to Fig. 6, the temperature measuring equipment of the present embodiment includes:
The circuit LC 100: the inductor iron core in the circuit LC 100 is temperature sensitive magnetic core, which incudes testee 10
Temperature (or be placed at measured point incude measured point temperature)；
Scan module 200: to the circuit LC 100 send frequency consecutive variations etc. amplitudes electromagnetic wave signal, to induce
Resonance occurs for the circuit LC 100；
Resonance detector module 300: judge whether the circuit LC 100 occurs resonance for detecting, and occur in the circuit LC 100 humorous
The first logging modle 400 is notified when vibration；
First logging modle 400: first logging modle 400 connects with scan module 200 and resonance detection module 300 respectively
It connects, records the real-time working parameter of the scan module 200 when resonance occurs for the circuit LC 100, and the real-time working parameter is sent out
It gives and calculates enquiry module 500.In practical application, the real-time working parameter include scan module output frequency or can be accurate
It is derived by one or more electric parameters of output frequency.
Calculate enquiry module 500: for receiving the real-time working ginseng of the scan module 200 of the first logging modle 400 transmitting
It counts, and the temperature of testee is calculated using the real-time working parameter.
It should be noted that the circuit LC of present embodiment does not need setting power supply, the circuit LC is simple including one
A inductor with temperature sensitive magnetic core and the capacitor being connect with the inductor, therefore temperature sensor can be set into the circuit LC
Standard component is encapsulated in testee 10.When needing to carry out thermometric to the object, it is only necessary to using scan module 200 to tested
The circuit LC 100 in object 10 carries out frequency sweep, and whether the detection circuit LC 100 occurs resonance, and obtains resonance frequency or its correspondence
Electric parameter, that is, may know that the Current Temperatures of testee 10, it is convenient and practical.
Certainly, the present embodiment is only to provide a kind of specific application mode, applies when by the temperature measuring equipment of the present embodiment
When carrying out thermometric in different fields or different products, need to carry out relevant change to the temperature measuring equipment, with specific reference to
Actual needs setting.
In addition, Resonance detector module 300 can be the Resonance detector module of the prior art, as long as can be returned with accurate judgement LC
Whether the Resonance detector module in resonant state is suitable for present embodiment on road 100.
Temperature measuring equipment disclosed in the present embodiment realizes accurate contactless temperature-measuring, can be widely used in daily
In life, for example, the temperature measuring equipment of the present embodiment is medium applied to electric cooker, water heater, electric kettle.
Embodiment 7
The present embodiment is advanced optimizing to embodiment 6, and referring to Fig. 7, scan module 200 is additionally provided with setting module
210, which sets the swept frequency range of the scan module 200.
It, can be with according to the characteristic in the circuit LC 100 and testee range of temperature that may be present in the present embodiment
The range of preferential reasonable setting frequency sweep, constantly carries out frequency sweep work in the range, can be improved and detect that the circuit LC 100 is sent out
The efficiency and accuracy of raw resonance.
Embodiment 8
The present embodiment is advanced optimizing to embodiment 6, judges whether the circuit LC occurs resonance specifically, proposing
Scheme.Referring to Fig. 8, Resonance detector module 300 further include:
Second logging modle 310: for recording the ELECTROMAGNETIC RADIATION SIGNATURE intensity around the circuit LC 100.
Second judgment module 320: connecting with the first logging modle 400 and the second logging modle 310 respectively, for returning in LC
When ELECTROMAGNETIC RADIATION SIGNATURE intensity around road 100 reaches extreme value, judge that the circuit LC 100 occurs resonance and notifies the first logging modle
400。
Extreme value in the present embodiment is in swept frequency range, and ELECTROMAGNETIC RADIATION SIGNATURE intensity (i.e. electromagnetic wave signal intensity) can be with
The maximum value or minimum value reached.
In practical application, due to the circuit LC 100 by consecutive variations etc. the electromagnetic waves of amplitudes influenced, 100 meeting of the circuit LC
Issue corresponding electromagnetic wave signal.If the circuit LC 100 is in normal state, the electromagnetic wave signal is very faint；If the circuit LC
100 are in resonant state, then the electromagnetic wave signal becomes strongly (for normal state), so can detecte
Whether the circuit LC 100 is in resonant state.
The present embodiment directly judges whether the circuit LC occurs resonance, fastly by directly acquiring the electromagnetic wave signal in the circuit LC
Victory is convenient.
Embodiment 9
In practical application, since the ELECTROMAGNETIC RADIATION SIGNATURE that the circuit LC issues is fainter, if the directly accurate LC that obtains is returned
ELECTROMAGNETIC RADIATION SIGNATURE intensity around road is to judge whether the circuit LC occurs resonance, and difficulty is bigger, and cost is relatively high, and
There is a certain error, therefore the present embodiment proposes whether another detection circuit LC occurs the method for resonance, as shown in figure 9,
Resonance detector module 300 includes:
Monitoring modular 330: for being monitored to the circuit LC 100；
Third logging modle 340: connecting with monitoring modular 330, for recording the output signal strength of monitoring modular 330；
Specifically, monitoring modular 330 is influenced by the electromagnetic wave signal in the circuit LC 100, certain reaction can be generated, which shows as
(output signal strength includes output voltage signal, current signal, output for the variation of the output signal strength of monitoring modular 330
The electric signals such as power), pass through third logging modle 340 and the direct contact measurement monitoring modular 330 of monitoring modular 330 at this time
Related electric signal, that is, can determine whether the circuit LC occurs resonance.
Third judgment module 350: it is connect respectively with the first logging modle 400 and third logging modle 340, in monitoring modular
When 330 output signal strength reaches extreme value, judge that resonance occurs for the circuit LC 100, and notify the first logging modle 400.
In use, monitoring modular 330 is influenced by the electromagnetic wave signal in the circuit LC 100, certain reaction can be generated, LC is worked as
When circuit 100 is in normal condition, influence of the electromagnetic wave signal in the circuit LC 100 to monitoring modular 330 is very faint；When LC is returned
When road 100 is in resonant state, influence of the electromagnetic wave signal in the circuit LC 100 to monitoring modular 330 can become very strong, because
The electric signal of this monitoring modular 330 can great changes will take place (extreme value occur), therefore can be easy to judge the circuit LC 100
Whether resonant state is in.
It originally is embodiment by providing monitoring modular 330, while third logging modle 340 directly connects with monitoring modular 330
It connects, very can accurately measure the variation of monitoring modular 330, and the variation of monitoring modular 330 directly reacts the circuit LC 100 and is
No generation resonance.It is humorous that this variation by monitoring modular 330 provided in this embodiment judges whether the circuit LC 100 occurs indirectly
The mode of vibration cleverly solves the difficulty of the directly electromagnetic wave signal in the measurement circuit LC 100, improves accuracy, drop simultaneously
Low cost, makes technology of the invention more easily realize popularization.
In practical application, monitoring modular 330 can for one monitoring coil, the monitoring coil for monitor the circuit LC 100 by
Consecutive variations etc. the influence of the electromagnetic wave of amplitudes and the variation that generates (it is embodied in the electromagnetism that the circuit LC 100 is issued
The power of wave), and monitor coil is influenced by electromagnetic wave caused by the circuit LC 100, feedback signal can be generated by monitoring in coil
(i.e. the output signal of monitoring modular 330 shows as voltage signal or current signal), when resonance occurs for the circuit LC 100, prison
Generated feedback signal is most strong in test coil, therefore can be judged by the strong and weak of generated feedback signal in monitoring coil
Whether the circuit LC is in resonant state.
Embodiment 10
The present embodiment is substantially the same manner as Example 6, unlike, referring to Figure 10, calculating enquiry module 500 includes:
Data memory module 510: the real-time working ginseng of scan module 200 is previously stored in the data memory module 510
Several corresponding relationships with the temperature of testee 10；In practical application, which includes the output of scan module 200
Frequency or the one or more electric parameters that can be accurately derived by output frequency.Specifically, can be storage scan module
The corresponding relationship of the temperature of 200 output frequency and testee, or storage can accurately be derived by scan module 200
Output frequency associated electrical parameters and testee temperature corresponding relationship.
Data inquiry module 530: connecting with the first logging modle 400 and data memory module 510 respectively, using from first
The real-time working parameter query data memory module 510 for the scan module 200 that logging modle 400 acquires.
Result return module 520: connecting with data inquiry module 530, for obtaining the inquiry knot of data inquiry module 530
Fruit returns to query result, obtains the temperature of testee.
In practical application, referring to Figure 11, for the real-time working parameter for the scan module 200 that data memory module 510 stores
With the corresponding relationship of the temperature of testee.When it is implemented, can use scan module real-time working parameter (in Figure 11 for
The one-to-one form of output frequency f) and testee temperature T is arranged, and the accuracy of measurement temperature can be improved in this mode,
Suitable for the application environment or product more demanding to temperature measurement accuracy.
Another set-up mode is referring to Figure 12, for the real-time working ginseng for the scan module 200 that data memory module 510 stores
The corresponding relationship of the temperature T of number range and testee, this setup, by using the real-time working parameter of scan module
Range (being output frequency f range in Figure 11) is corresponded with temperature, and this mode can reasonably control thermometric error
Range, suitable for the application environment or product of less demanding to temperature measurement accuracy.
It should be noted that Figure 11 and Figure 12 are to express the second running parameter in data memory module and be tested
Corresponding relationship between object temperature: can be using the one-to-one corresponding relationship such as Figure 11, it can also be using such as Figure 12
Second running parameter range corresponds to the corresponding relationship of actual temp, naturally it is also possible to use the second running parameter range corresponding temperature
The corresponding relationship of range.In practical applications, T1-T9 is specific temperature value.
A kind of temperature measuring equipment of inquiry acquisition testee temperature is present embodiments provided, this mode can be swept knowing
When the real-time working parameter of frequency module 200, directly inquiry obtains the temperature of testee 10, needs not move through complicated calculating,
It is more efficient, it is simpler quick.
Embodiment 11
Present embodiment discloses produce any one in temperature measuring equipment disclosed in embodiment 6-10 applied to electric cooker
The concrete application of product, specifically: the circuit LC is arranged to an independent standard temperature-sensing element, scan module, Resonance detector mould
Block, the first logging modle and calculating enquiry module are arranged to a temperature measurement circuit；The standard temperature-sensing element is built in electric cooker
In liner (electric appliance is potted in inside the liner of electric cooker, incudes liner temperature), which is placed in the shell of electric cooker
And it is connect with the control system of electric cooker.
When work, the control system of electric cooker only needs to send a temperature request signal, temperature measurement circuit to temperature measurement circuit
Scan module work frequency sweep, whether Resonance detector module judgment criteria temperature-sensing element (circuit LC) occurs resonance, the first record
The real-time working parameter of scan module when resonance occurs for module record standard temperature-sensing element (circuit LC), calculates enquiry module and passes through
The current temperature value (i.e. the current temperature value of liner) of the temperature sensitive magnet in the circuit LC is calculated in the real-time working parameter, then will
The temperature value feeds back to the control system of electric cooker.
In another scheme, it can be realized using the method for the real-time working parameter query temperature using scan module,
Specifically: data memory module and result return module are set in calculating enquiry module, are stored in the data memory module
The corresponding relationship of the real-time working parameter and the temperature of temperature sensitive magnet, in use, calculating enquiry module using obtained real-time work
Make parameter and directly inquire data memory module, result return module returns to query result, obtains testee temperature.
In the present embodiment, the real-time working parameter of scan module includes the output frequency of scan module or can accurately derive
Obtain one or more electric parameters of output frequency.
The electric cooker of the present embodiment, due to can accurately know the temperature of its liner in real time, for the temperature of liner
Control has very big help.
Certainly, temperature measuring equipment disclosed in embodiment 6-10, which can also be applied, needs the product of thermometric or temperature control at other
Upper (such as water heater, hot-water bottle etc.), according to factors such as the characteristics, working principle and working environment of different products, to implementation
Temperature measuring equipment disclosed in example 6-10 carries out simple adjustment and complies with requirement.It is any to use disclosed in embodiment 6-10
Temperature measuring equipment product it is within the scope of the present invention.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations all should belong to the guarantor of appended claims of the present invention
Protect range.
Claims (13)
1. a kind of temp measuring method, which comprises the following steps:
A, scan module to the circuit LC send frequency consecutive variations etc. amplitudes electromagnetic wave signal；The inductor in the circuit LC
Iron core is temperature sensitive magnetic core, and the temperature sensitive magnetic core incudes testee temperature；
B, whether the detection circuit LC occurs resonance；
C, the real-time working parameter of the scan module when resonance occurs for the circuit LC is recorded；
D, the output frequency of scan module when obtaining occurring resonance using the real-time working parameter of scan module, which is
The resonance frequency in the circuit LC is calculated to obtain the inductance value in the circuit LC by resonance frequency, then is obtained by inductance value calculation or inquiry
The Current Temperatures of temperature sensitive magnetic core, Current Temperatures, that is, testee temperature of temperature sensitive magnetic core.
2. temp measuring method according to claim 1, which is characterized in that in the step A, comprising the following steps:
A1, the swept frequency range that scan module is set；
A2, the scan module frequency sweep in set swept frequency range, to the circuit LC send frequency consecutive variations etc. amplitudes electricity
Magnetostatic wave signal.
3. temp measuring method according to claim 1, which is characterized in that in the step B, comprising the following steps:
ELECTROMAGNETIC RADIATION SIGNATURE intensity around b11, the record circuit LC；
If the ELECTROMAGNETIC RADIATION SIGNATURE intensity around the circuit b12, LC reaches extreme value, judge that resonance occurs for the circuit LC.
4. temp measuring method according to claim 1, which is characterized in that in the step B, comprising the following steps:
B21, the circuit LC is monitored using monitoring modular；
B22, the output signal strength for recording monitoring modular；
If the output signal strength of b23, monitoring modular reaches extreme value, judge that resonance occurs for the circuit LC.
5. temp measuring method according to claim 1, which is characterized in that in the step C, the real-time work of the scan module
It include the output frequency of scan module or the one or more electric parameters that can be accurately derived by output frequency as parameter.
6. temp measuring method according to claim 1, which is characterized in that in the step D, comprising the following steps:
D1, the real-time working parameter query data memory module using scan module；The data memory module is stored with frequency sweep
The corresponding relationship of the temperature of the real-time working parameter and testee of module；
D2, query result is returned to, obtains the temperature of testee.
7. a kind of temperature measuring equipment characterized by comprising
The circuit LC: the inductor iron core in the circuit LC is temperature sensitive magnetic core, and the temperature sensitive magnetic core incudes testee temperature；
Scan module: for the circuit LC send frequency consecutive variations etc. amplitudes electromagnetic wave signal；
Resonance detector module: judge whether the circuit LC occurs resonance for detecting；
First logging modle: first logging modle is connect with the scan module and the Resonance detector module respectively, note
Record the real-time working parameter of the scan module when resonance occurs for the circuit LC；
Calculate enquiry module: connect with first logging modle, for using scan module real-time working parameter calculating or
Inquiry obtains the temperature of testee.
8. temperature measuring equipment according to claim 7, which is characterized in that the scan module is additionally provided with setting module, institute
State the swept frequency range that setting module sets the scan module.
9. temperature measuring equipment according to claim 7, which is characterized in that the Resonance detector module further include:
Second logging modle: for recording the ELECTROMAGNETIC RADIATION SIGNATURE intensity around the circuit LC；
Second judgment module: it is connect respectively with first logging modle and the second logging modle, for around the circuit LC
When ELECTROMAGNETIC RADIATION SIGNATURE intensity reaches extreme value, judge that the circuit LC occurs resonance and notifies the first logging modle.
10. temperature measuring equipment according to claim 7, which is characterized in that the Resonance detector module includes:
Monitoring modular: for being monitored to the circuit LC；
Third logging modle: connecting with the monitoring modular, for recording the output signal strength of the monitoring modular；
Third judgment module: it is connect respectively with first logging modle and third logging modle, in the defeated of the monitoring modular
When signal strength reaches extreme value out, judge that resonance occurs for the circuit LC, and notify the first logging modle.
11. temperature measuring equipment according to claim 7, which is characterized in that the real-time working parameter of the scan module includes
The output frequency of scan module or the one or more electric parameters that can be accurately derived by output frequency.
12. temperature measuring equipment according to claim 7, which is characterized in that the calculating enquiry module includes:
Data memory module: the data memory module is stored with the real-time working parameter of scan module and the temperature of testee
Corresponding relationship；
Data inquiry module: connecting with first logging modle and data memory module respectively, using from the first logging modle
The real-time working parameter query data memory module of the scan module acquired；
Result return module: connecting with the data inquiry module, for returning to query result, obtains the temperature of testee.
13. a kind of product of use temperature measuring equipment according to claim 7-12 any one.
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| CN107990995A (en) * | 2017-12-06 | 2018-05-04 | 王宝彬 | A kind of method for measuring assessment vessel for electromagnetic cooker temperature |
| CN108613748B (en) * | 2018-05-09 | 2021-03-26 | 安徽大学 | Temperature measurement system and method based on piezoelectric ceramic resonant inductor |
| CN112710412B (en) * | 2019-10-25 | 2023-11-03 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating equipment and pot calibration method and device thereof |
| CN113720490A (en) * | 2021-08-31 | 2021-11-30 | 广东美的厨房电器制造有限公司 | Food material contact assembly, temperature sensing assembly, temperature detection system and cooking appliance |
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