CN209131862U - The verification of passive and wireless thermometric and calibration system - Google Patents
The verification of passive and wireless thermometric and calibration system Download PDFInfo
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- CN209131862U CN209131862U CN201821425362.5U CN201821425362U CN209131862U CN 209131862 U CN209131862 U CN 209131862U CN 201821425362 U CN201821425362 U CN 201821425362U CN 209131862 U CN209131862 U CN 209131862U
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Abstract
The utility model discloses a kind of verification of passive and wireless thermometric and calibration systems；The system comprises surface acoustic wave sensor, the surface that configured in measured object and according to the output of the surface temperature of the measured object for being received for tested passive and wireless device and generating the resonance signal of temperature signal；Detection device generates normal temperature signal according to the resonance signal；Calibration equipment verifies the difference of the temperature signal and the normal temperature signal.The utility model is by detection device and the resonance signal of tested passive and wireless device synchronous acquisition SAW sensor output and verifies the existing difference of detection device output for being tested the output of passive and wireless device with standard after acquisition.
Description
Technical field
The utility model relates to thermometry fields, in particular to a kind of verification of passive and wireless thermometric and calibration cartridge
It sets.
Background technique
With the development of passive and wireless on-line condition monitoring, more and more different models, function are based on sound wave surface characteristic
Passive and wireless temperature measuring equipment produced.Its temperature measurement accuracy of the temperature measuring equipment of different manufacturers has differences, and part is anti-interference
Ability and precision are poor.
Such as application No. is disclose a kind of passive and wireless in CN201310628687.9 (hereinafter referred to as documents 1)
Temp measuring system on-line calibration method.In the system that the specific embodiment part of documents 1 refers to the method configuration.
The system comprises surface acoustic wave resonance sensor, radio-frequency antenna, thermometric managing device and high precision measuring temperature instrument.Table
The configuration of surface wave resonant transducer emits electromagnetic wave in temperature measuring point temperature collection, and radio-frequency antenna receives electromagnetic wave, thermometric managing device
Identification electromagnetic wave determines the temperature value of temperature measuring point；High precision measuring temperature instrument acquires the actual value of temperature measuring point, is used for and temperature number
Value relatively and establishes accurate offset.
What is referred in above-mentioned documents 1 directly acquires the true temperature of temperature measuring point, Neng Gouwei by high precision measuring temperature instrument
Temperature-compensating provides reference, but high precision measuring temperature instrument and the acquisition of surface acoustic wave resonance sensor for temperature are difficult in documents 1
With or can not achieve synchronization.So in the scene of the temperature real-time change of temperature measuring point, as the method for documents 1 is above-mentioned in configuration
It, can not the determining temperature value of high-precision calibration thermometric managing device when system.
Utility model content
The utility model embodiment at least provides a kind of passive and wireless thermometric check system, is able to solve high in the prior art
Precision thermometer problem asynchronous with the acquisition of tested passive and wireless device.
The specific implementation of above-described embodiment, as described below.
The system comprises:
Surface acoustic wave sensor, the surface configured in measured object are simultaneously exported according to the surface temperature of the measured object for supplying
Tested passive and wireless device receives and generates the resonance signal of temperature signal；
Detection device generates normal temperature signal according to the resonance signal；
Calibration equipment verifies the difference of the temperature signal and the normal temperature signal.
The present embodiment is preferably, the detection device, comprising:
Power circuit, the detection device of powering；
Radio-frequency antenna receives the resonance signal；
RF receiving circuit demodulates the received resonance signal and exports demodulated signal；
Control circuit generates the normal temperature signal for indicating temperature according to the demodulated signal；
Interface circuit communicates the normal temperature signal to the calibration equipment.
The present embodiment is preferably, the detection device includes the radio frequency transmitter circuitry for broadcast query signal；
The surface acoustic wave sensor receives the inquiry signal and the measured object according to the inquiry signal detection
Surface temperature.
The present embodiment preferably, the interface circuit by bus respectively with the calibration equipment and described be tested passive nothing
Line apparatus communication.
The present embodiment is preferably, the detection device includes warning circuit；
The warning circuit normal temperature signal and an at least threshold signal simultaneously alert.
The present embodiment is preferably, the calibration equipment is raw according to the difference of the temperature signal and the normal temperature signal
At temperature compensation data and return to the detection device；
The detection device includes the storage circuit with control circuit coupling, the temperature that the storage circuit storage returns
Spend offset data；
The detection device generates high-precision according to the temperature compensation data and the posterior normal temperature signal and believes
Number, the calibration equipment verifies the difference of the posterior temperature signal and the high-precision signal.
The present embodiment preferably, the calibration equipment according to the difference school of the temperature signal and the normal temperature signal
The temperature signal that the quasi- tested passive and wireless device generates.
The utility model embodiment separately provides a kind of passive and wireless thermometric calibration system, the system comprises:
Surface acoustic wave sensor, the surface configured in measured object are simultaneously exported according to the surface temperature of the measured object for supplying
Tested passive and wireless device receives and generates the resonance signal of temperature signal；
Detection device generates normal temperature signal according to the resonance signal；
Calibrating installation verifies the difference of the temperature signal and the normal temperature signal and according to the variation calibration institute
State temperature signal.
The present embodiment is preferably, the system comprises display device, and the display device is according to the temperature after the calibration
Signal generates report chart or report text or report video.
For above scheme, the utility model by referring to the drawings retouching disclosed exemplary embodiment work in detail
It states, also understands the other feature of the utility model embodiment and its advantage.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the schematic diagram of embodiment one；
Fig. 2 is the circuit diagram of detection device；
Fig. 3 is the schematic diagram of embodiment two；
The schematic diagram of the position Fig. 4 embodiment three.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
Embodiment one
The present embodiment discloses a kind of passive and wireless thermometric check system, same by detection device and tested passive and wireless device
The resonance signal of step acquisition SAW sensor output simultaneously verifies the output of tested passive and wireless device and the detection of standard after acquisition
Device exports existing difference.
In order to realize above scheme, referring to FIG. 1, the system of the present embodiment includes SAW sensor, detection device and verification
Device.
SAW sensor is mainly made of antenna and surface acoustic wave chip.Surface acoustic wave chip includes piezoelectric substrate and arrangement
Interdigital transducer and reflecting grating array on piezoelectric substrate, interdigital transducer are located at the resonant cavity of a pair of of reflecting grating array composition
And SAW resonance structure is constituted with resonant cavity.Reflecting grating array can limit the projectile energy of certain frequency in SAW resonance structure
Roundtrip, superposition and resonance are formed system in the resonant cavity being made of the grizzly bar of reflecting grating, and between two reflection grizzly bars
Standing wave.The SAW sensor of the present embodiment passes through interdigital transducer after reception carrys out inquiry signal of the self-test device as excitation
Surface acoustic wave is generated, surface acoustic wave is propagated along the surface of piezoelectric substrate and forms standing wave in SAW resonance structure, and standing wave is through piezoelectricity
Effect, which is converted to, is amplified by amplifying circuit after resonance signal, amplified resonance signal via antenna in the form of an electromagnetic wave to
External radiation.
Referring to FIG. 2, the realization of the present embodiment detection device, including power circuit, radio-frequency antenna, RF transmit-receive circuit,
DSP control circuit, warning circuit and interface circuit.
The 220V AC voltage of access is converted to 5V DC voltage after decompression, rectification and filtering by power circuit, then
By the standard voltage stabilizing chip that configures according to the 5V direct voltage output 3.3V DC voltage and 1.8V DC voltage of input；Its
In, source of stable pressure of the 1.8V DC voltage as digit chip in detection device, pressure stabilizing of the 3.3V DC voltage as other circuits
Source.
Radio-frequency antenna receives the resonance signal for having SAW sensor to return.
RF transmit-receive circuit includes receiving circuit and transmit circuit；
It receives circuit and received resonance signal is converted to faint alternating current, then alternating current is subjected to High frequency filter
And it is demodulated after amplification, output demodulated signal to DSP control circuit；Preferably, the present embodiment receive circuit realization mainly include
Signal condition sub-circuit and A/D conversion sub-circuit；Signal condition sub-circuit receives the analog signal of resonance signal to radio-frequency antenna
Amplify and shaping after the digital signal of resonance signal is converted to DSP control circuit by A/D conversion sub-circuit.
The inquiry signal modulation that its transmit circuit exports DSP control circuit is shaken at emission medium-frequency, then by emission medium-frequency
High-frequency signal will be become by swinging circuit in frequency, high-frequency signal switchs to electromagnetic wave outside spoke by radio-frequency antenna after power amplifier
It penetrates.Preferably, the realization of the present embodiment transmit circuit mainly includes DDS sub-circuit, PLL sub-circuit, mixing sub-circuit, band logical
Filter sub-circuit, signal amplification sub-circuit and power amplification sub-circuit；DDS sub-circuit generate a frequency and phase it is adjustable just
String signal, PPL sub-circuit will be believed a high-frequency signal, mixing sub-circuit is generated after sinusoidal signal frequency multiplication above-mentioned as high frequency
Radiofrequency signal number is converted to, bandpass filtering sub-circuit is filtered the noise signal in radiofrequency signal including unwanted frequency,
Signal amplifies sub-circuit and power amplification sub-circuit and carries out signal and power amplification, the radio frequency of amplification to filtered radiofrequency signal
Signal switchs to electromagnetic wave outside radiation through radio-frequency antenna.
DSP control circuit is exported by transmit circuit as the inquiry signal of SAW sensor input stimulus and by connecing
It receives circuit and receives the resonance signal after demodulation；Meanwhile DPS control circuit utilizes the frequency of existing fft algorithm analysis resonance signal
Spectrum information is tabled look-up according to the mapping relations of preconfigured normal temperature and frequency, obtains the temperature with resonance signal frequency dependence
For degree according to as normal temperature signal, aforesaid standards temperature signal generates the comparison of temperature signal as tested passive and wireless device
Example.
Interface circuit realizes the communication of DSP control circuit and calibration equipment by connection RS485 bus, for controlling for DPS
The normal temperature signal that circuit processed will test acquisition is transmitted to calibration equipment.
Temperature data is compared by warning circuit with the temperature threshold of several mark different temperatures grades, current to obtain
The temperature grade of measured object surface temperature, and alerted after temperature grade does not meet specification.Preferably, warning circuit includes several
A comparator, an input terminal of comparator input the normal temperature signal of DPS controller output, and another input terminal difference is defeated
The threshold signal of inlet identity different temperatures grade, output end and a MCU are coupled.So, comparator is to normal temperature signal and threshold
The size of value signal compares, can be with high level or low level comparison signal.Comparison signal is identified by MCU.In addition, this
The MCU of embodiment is configured with combined aural and visual alarm, and MCU controls combined aural and visual alarm according to comparison signal and directly alerted, with alarm
The surface temperature of measured object is excessively high, prevents from damaging device.
Calibration equipment is communicated with detection device and tested passive and wireless device respectively by RS485 bus.It is obtained in communication
Compare the difference of the two after temperature signal and normal temperature signal and passive and wireless device is tested according to the difference identification compared
Measurement whether there is error.
Preferably, the calibration equipment of the present embodiment generates temperature-compensating according to the difference of temperature signal and normal temperature signal
Signal simultaneously returns to detection device；Detection device includes the storage circuit with control circuit coupling, the temperature that storage circuit storage returns
Spend thermal compensation signal；Detection device is compensated according to the temperature compensation signal of storage in rear detected normal temperature signal
And the high-precision signal that relative standard's temperature has more high measurement accuracy is generated, calibration equipment verifies posterior temperature signal and height
The difference of precision signal.
Preferably, the calibration equipment of the present embodiment is pre-configured to be according to the difference update of temperature signal and normal temperature signal
The mapping relations of normal temperature and frequency in detection device.
Preferably, the calibration equipment of the present embodiment can lead to after according to temperature signal and normal temperature signal identification difference
The variation calibration for crossing identification is tested the temperature signal and display that passive and wireless device generates.
Embodiment two
Referring to FIG. 3, the present embodiment separately provides a kind of passive and wireless thermometric check system, for simultaneously to multiple tested nothings
Source wireless device is verified；It includes and the SAW sensor of bus communication, detection device and calibration equipment.
Surface of the SAW sensor configuration in measured object and the surface temperature according to measured object, which export, to be used to supply multiple tested nothings
Source wireless device receives and generates the resonance signal of temperature signal.
Detection device generates normal temperature signal according to resonance signal.
Calibration equipment verifies the difference of each temperature signal and normal temperature signal respectively.
In conjunction with above scheme, the present embodiment carries out batch verification to multiple tested passive and wireless devices.
Embodiment three
Referring to FIG. 4, the present embodiment separately provides a kind of passive and wireless thermometric calibration system, including SAW sensor, detection
Device and calibrating installation；SAW sensor configures the surface in measured object and the surface temperature according to measured object is exported for for quilt
Passive and wireless device is surveyed to receive and generate the resonance signal of temperature signal；Detection device generates normal temperature according to resonance signal
Signal；Calibrating installation verifies the difference of temperature signal and normal temperature signal and according to variation calibration temperature signal.
Preferably, the system of the present embodiment further comprises display device, and display device is according to the temperature signal after calibration
Generate the one or more of report chart or report text or report video for display.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of passive and wireless thermometric check system, which is characterized in that the system comprises:
Surface acoustic wave sensor, the surface configured in measured object are simultaneously tested for supplying according to the output of the surface temperature of the measured object
Passive and wireless device receives and generates the resonance signal of temperature signal；
Detection device generates normal temperature signal according to the resonance signal；
Calibration equipment verifies the difference of the temperature signal and the normal temperature signal.
2. passive and wireless thermometric check system as described in claim 1, which is characterized in that
The detection device, comprising:
Power circuit, the detection device of powering；
Radio-frequency antenna receives the resonance signal；
RF receiving circuit demodulates the received resonance signal and exports demodulated signal；
Control circuit generates the normal temperature signal for indicating temperature according to the demodulated signal；
Interface circuit communicates the normal temperature signal to the calibration equipment.
3. passive and wireless thermometric check system as claimed in claim 2, which is characterized in that
The detection device includes the radio frequency transmitter circuitry for broadcast query signal；
The surface acoustic wave sensor receives the surface of the inquiry signal and the measured object according to the inquiry signal detection
Temperature.
4. passive and wireless thermometric check system as claimed in claim 2, which is characterized in that
The interface circuit is communicated with the calibration equipment and the tested passive and wireless device respectively by bus.
5. wireless temperature measurement check system in source as claimed in claim 2, which is characterized in that
The detection device includes warning circuit；
The warning circuit normal temperature signal and an at least threshold signal simultaneously alert.
6. passive and wireless thermometric check system as described in claim 1, which is characterized in that
The calibration equipment generates temperature compensation data according to the difference of the temperature signal and the normal temperature signal and returns
Return the detection device；
The detection device includes the storage circuit with control circuit coupling, and the temperature that the storage circuit storage returns is mended
Repay data；
The detection device generates high-precision signal, institute according to the temperature compensation data and the posterior normal temperature signal
State the difference that calibration equipment verifies the posterior temperature signal and the high-precision signal.
7. passive and wireless thermometric check system as described in claim 1, which is characterized in that
The calibration equipment is tested passive and wireless according to the variation calibration of the temperature signal and the normal temperature signal
The temperature signal that device generates.
8. a kind of passive and wireless thermometric calibration system, which is characterized in that the system comprises:
Surface acoustic wave sensor, the surface configured in measured object are simultaneously tested for supplying according to the output of the surface temperature of the measured object
Passive and wireless device receives and generates the resonance signal of temperature signal；
Detection device generates normal temperature signal according to the resonance signal；
Calibrating installation verifies the difference of the temperature signal and the normal temperature signal and the temperature according to the variation calibration
Spend signal.
9. passive and wireless thermometric calibration system as claimed in claim 8, which is characterized in that the system comprises display device,
The display device generates report chart or report text or report video according to the temperature signal after the calibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821425362.5U CN209131862U (en) | 2018-08-31 | 2018-08-31 | The verification of passive and wireless thermometric and calibration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821425362.5U CN209131862U (en) | 2018-08-31 | 2018-08-31 | The verification of passive and wireless thermometric and calibration system |
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| CN209131862U true CN209131862U (en) | 2019-07-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116451014A (en) * | 2023-06-20 | 2023-07-18 | 北京云摩科技股份有限公司 | Real-time monitoring method for temperature of movable part in wireless passive equipment |
-
2018
- 2018-08-31 CN CN201821425362.5U patent/CN209131862U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116451014A (en) * | 2023-06-20 | 2023-07-18 | 北京云摩科技股份有限公司 | Real-time monitoring method for temperature of movable part in wireless passive equipment |
| CN116451014B (en) * | 2023-06-20 | 2023-08-15 | 北京云摩科技股份有限公司 | Real-time monitoring method for temperature of movable part in wireless passive equipment |
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