CN110262353A - A kind of scarce liquid guard method of ultrasonic ultrasonic delay line memory - Google Patents
A kind of scarce liquid guard method of ultrasonic ultrasonic delay line memory Download PDFInfo
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- CN110262353A CN110262353A CN201910594937.9A CN201910594937A CN110262353A CN 110262353 A CN110262353 A CN 110262353A CN 201910594937 A CN201910594937 A CN 201910594937A CN 110262353 A CN110262353 A CN 110262353A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
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Abstract
The invention discloses a kind of ultrasonic ultrasonic delay line memories to lack liquid guard method; the present invention is specifically includes the following steps: sampling, rectification, filtering, partial pressure, secondary filter and the MCU signal processing that S1, scarce liquid are protected; S2, the scarce liquid signal detection when transduction piece; S3, scarce liquid signal is collected by lacking liquid signal acquisition point; then sampling and filtering that liquid signal lack by filter circuit module liquid signal are lacked, the present invention relates to ultrasonic atomization technique fields.The ultrasonic ultrasonic delay line memory lacks liquid guard method; it can be achieved to protect circuit by simplifying scarce liquid; the sampling, filtering and circuit response that liquid protection signal can be completed to lack are less than 200ms; strive for more times for MCU signal processing; system can stop atomizer work with the shorter time, minimize the damage of transduction piece, improve the service life of ultrasonic ultrasonic delay line memory; achievable circuit is simple and reliable and fast response time, reduces product cost so as to simplify circuit.
Description
Technical field
The present invention relates to ultrasonic atomization technique field, specially a kind of ultrasonic ultrasonic delay line memory lacks liquid guard method.
Background technique
Ultrasonic ultrasonic delay line memory is using ultrasonic wave acoustic energy, and medical fluid becomes subtle aerosol, now sucked by respiratory tract, reaches and control
Treat purpose, its main feature is that mist amount size can be adjustable, droplet is small and uniform (diameter is at 5 μm or less), medical fluid with depth and slowly
Air-breathing is inhaled into terminal bronchus and alveolar, and because of atomizer electronic section energy heat production, has heating effect to atomized liquid, make patient
Sucking warm, comfortable aerosol, ultrasonic ultrasonic delay line memory uses efficient integrated circuit, the Unique physical design of ultra-small integrated,
Important component uses the atomizing piece of high-quality, makes mist machine, potted landscape and work in humidifier, fumigator, beautifying apparatus, sterilizing machine, bathtub
Extensive use in skill product.
At present ultrasonic ultrasonic delay line memory using more and more extensive, in the design process of ultrasonic ultrasonic delay line memory, lack liquid protection
The design of circuit is transduction piece (being commonly called as atomizing piece) important link of a protection atomizer, and the reliability of this protection circuit is straight
The service life and user experience for influencing atomizer are connect, scarce liquid protection circuit uses a large amount of electronic device now, carries out scarce
The sampling of liquid protection signal, rectification, filtering, partial pressure, secondary filter finally carry out MCU signal processing, are worked and are lacked using transduction piece
When liquid, both end voltage (CN071) can be increased, and generated variable signal and carried out detection protection, but the raised amplitude of this voltage is main
Depending on the inherent parameters characteristic of transduction piece, the transduction piece of different manufacturers or different batches can generate different amplitudes, production
On be inconvenient.
The present invention can simplify scarce liquid protection circuit, and sampling, filtering and the circuit that can complete to lack liquid protection signal respond
Less than 200ms, strive for more times for MCU signal processing, system can stop atomizer work with the shorter time, maximum
Limit reduces the damage of transduction piece, improve the service life of ultrasonic ultrasonic delay line memory, it can be achieved that circuit is simple and reliable and fast response time,
Product cost is reduced so as to simplify circuit.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of ultrasonic ultrasonic delay line memories to lack liquid guard method, solves existing
Some ultrasonic ultrasonic delay line memories lack the inherent parameters characteristic that the liquid protection raised amplitude of circuit voltage depends primarily on transduction piece, different
The transduction piece of producer or different batches can generate different amplitudes, lead to the problem of being inconvenient in production.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of scarce liquid guarantor of ultrasonic ultrasonic delay line memory
Maintaining method, specifically includes the following steps:
S1, first by extraneous quiescent operation voltage input to scarces liquid protection circuit, then pass through respectively resistance R072,
Inductance L071, capacitor C072, transduction piece CN071, resistance R071, capacitor C071, capacitor C074, power tube Q071, inductance L072,
Capacitor C073 and inductance L073 lack sampling, rectification, filtering, partial pressure, secondary filter and the MCU signal processing of liquid protection；
S2, when transduction piece is in work and lacks liquid, entire ultrasonic atomizatio circuit will be in resonant state, and power tube at this time
The voltage value of the base circuit of Q071 will be reduced to 0V from 0.5-0.7V when working normally, the present invention using this variable signal into
Row detection protection, is fundamentally the resonance fundamental characteristics using Colpitts oscillation circuit, the consistency and adaptation of circuit
Property it is high；
S3, scarce liquid signal is collected by lacking liquid signal acquisition point, then lacks liquid signal and is carried out by filter circuit module
The sampling and filtering of liquid signal are lacked, treated, and signal directly can carry out AD signal identification and processing by microcomputer, to complete
Protection is detected to the scarce liquid of ultrasonic atomizatio circuit.
Preferably, Vbe electric conduction of the voltage value of the base circuit of power tube Q071 depending on Q071 in the step S2
Pressure.
Preferably, the terminals of resistance R072 are connect by conducting wire with the terminals of inductance L071 in the step S1, and
The terminals of inductance L071 are connect with the terminals of capacitor C072, resistance R071 and capacitor C074 respectively by conducting wire.
Preferably, the terminals of capacitor C072 are connected by No. 1 terminals of conducting wire and transduction piece CN071 in the step S1
It connects, and No. 2 terminals of transduction piece CN071 are connect by conducting wire with the terminals of capacitor C071, the wiring of the resistance R071
End is connect with the terminals of capacitor C071 and power tube Q071 respectively by conducting wire, and the terminals of power tube Q071 pass through conducting wire
It is connect respectively with the terminals of capacitor C073 and inductance L072.
Preferably, the terminals of inductance L072 are connect by conducting wire with the terminals of inductance L073 in the step S1.
Preferably, the RC filter circuit that filter circuit module is R073 and C075 in the step S3.
Preferably, the quantity for liquid signal sampling point being lacked in the step S3 is at least four, and four signal sampling points minute
Conducting wire not between resistance R072 and inductance L071 lacks the conducting wire between liquid signal sampling point A, inductance L071 and capacitor C072
The conducting wire lacked between liquid signal sampling point B, capacitor C071 and power tube Q071 lacks liquid signal sampling point C and power tube Q071
Conducting wire between inductance L072 lacks liquid signal sampling point D.
Preferably, by increasing the voltage value of component electricity high detection signal, or increase amplifying circuit to detection signal
Processing is amplified, to optimize to change in detection signal amount, and then increases the variable quantity of signal, promotion detects this signal
Reliability.
(3) beneficial effect
The present invention provides a kind of ultrasonic ultrasonic delay line memories to lack liquid guard method.Have compared with prior art following beneficial to effect
Fruit: the ultrasonic ultrasonic delay line memory lacks liquid guard method, by specifically includes the following steps: S1, passing through extraneous quiescent operation first
Voltage input to scarce liquid protection circuit in, then respectively by resistance R072, inductance L071, capacitor C072, transduction piece CN071,
Resistance R071, capacitor C071, capacitor C074, power tube Q071, inductance L072, capacitor C073 and inductance L073 carry out lacking liquid protection
Sampling, rectification, filtering, partial pressure, secondary filter and MCU signal processing, S2, when transduction piece be in work lack liquid when, entirely
Ultrasonic atomizatio circuit will be in resonant state, and at this time the voltage value of the base circuit of power tube Q071 by from work normally when
0.5-0.7V is reduced to 0V, S3, collects scarce liquid signal by lacking liquid signal acquisition point, then lacks liquid signal and pass through filter circuit
Module lack the sampling and filtering of liquid signal, and treated, and signal directly can carry out AD signal identification and processing by microcomputer,
To complete the scarce liquid detection protection to ultrasonic atomizatio circuit, it can be achieved that protecting circuit by simplifying scarce liquid, can complete to lack liquid
It protects sampling, filtering and the circuit response of signal to be less than 200ms, strives for more times for MCU signal processing, system can be used
The shorter time stops atomizer work, minimizes the damage of transduction piece, improves the service life of ultrasonic ultrasonic delay line memory, can be real
Existing circuit is simple and reliable and fast response time, reduces product cost so as to simplify circuit.
Detailed description of the invention
Fig. 1 is work flow diagram of the invention；
Fig. 2 is that ultrasonic ultrasonic delay line memory of the invention lacks liquid protection circuit diagram；
Fig. 3 is that the ultrasonic ultrasonic delay line memory of the embodiment of the present invention 1 lacks liquid protection circuit diagram；
Fig. 4 is that the ultrasonic ultrasonic delay line memory of the embodiment of the present invention 2 lacks liquid protection circuit diagram；
Fig. 5 is that the ultrasonic ultrasonic delay line memory of the embodiment of the present invention 3 lacks liquid protection circuit diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-5 is please referred to, the embodiment of the present invention provides three kinds of technical solutions: a kind of scarce liquid protection side of ultrasonic ultrasonic delay line memory
Method specifically includes following embodiment:
Embodiment 1
S1, first by extraneous quiescent operation voltage input to scarces liquid protection circuit, then pass through respectively resistance R072,
Inductance L071, capacitor C072, transduction piece CN071, resistance R071, capacitor C071, capacitor C074, power tube Q071, inductance L072,
Capacitor C073 and inductance L073 lack sampling, rectification, filtering, partial pressure, secondary filter and the MCU signal processing of liquid protection,
The terminals of resistance R072 are connect by conducting wire with the terminals of inductance L071, and the terminals of inductance L071 are distinguished by conducting wire
It is connect with the terminals of capacitor C072, resistance R071 and capacitor C074, the terminals of capacitor C072 pass through conducting wire and transduction piece
No. 1 terminals of CN071 connect, and No. 2 terminals of transduction piece CN071 are connect by conducting wire with the terminals of capacitor C071,
The terminals of resistance R071 are connect with the terminals of capacitor C071 and power tube Q071 respectively by conducting wire, and power tube Q071
Terminals connects respectively by conducting wire with the terminals of capacitor C073 and inductance L072, the terminals of inductance L072 by conducting wire and
The terminals of inductance L073 connect；
S2, when transduction piece is in work and lacks liquid, entire ultrasonic atomizatio circuit will be in resonant state, and power tube at this time
The voltage value of the base circuit of Q071 will be reduced to 0V from 0.6V when working normally, and the present invention is examined using this variable signal
Protection to be surveyed, is fundamentally the resonance fundamental characteristics using Colpitts oscillation circuit, the consistency and adaptability of circuit are high,
The voltage value of the base circuit of power tube Q071 depends on the Vbe conducting voltage of Q071；
S3, scarce liquid signal is collected by lacking liquid signal acquisition point, then lacks liquid signal and is carried out by filter circuit module
The sampling and filtering of liquid signal are lacked, treated, and signal directly can carry out AD signal identification and processing by microcomputer, to complete
Protection is detected to the scarce liquid of ultrasonic atomizatio circuit, the RC filter circuit of filter circuit module preferred R073 and C075 lacks liquid signal
The quantity of sampled point is at least four, and four signal sampling points are respectively the scarce liquid of conducting wire between resistance R072 and inductance L071
Conducting wire between signal sampling point A, inductance L071 and capacitor C072 lacks liquid signal sampling point B, capacitor C071 and power tube Q071
Between conducting wire lack the conducting wire between liquid signal sampling point C and power tube Q071 and inductance L072 and lack liquid signal sampling point D.
As shown in Figure 3, using scarce liquid signal acquisition point A, and increase diode D071, atomization circuit samples when working normally
Voltage is the sum of PN junction pressure drop and Vbe pressure drop of Q071 of D071 at signal, and voltage is about 1.2V or so；When atomization circuit works
When lacking liquid, voltage can become 0V at sampled signal, so that variable quantity is increased.Such as increase multiple diodes, sampled signal meeting
It is superimposed accordingly, the variable quantity for detecting signal can also increase accordingly, and promote the reliability for detecting this signal.
Embodiment 2
S1, first by extraneous quiescent operation voltage input to scarces liquid protection circuit, then pass through respectively resistance R072,
Inductance L071, capacitor C072, transduction piece CN071, resistance R071, capacitor C071, capacitor C074, power tube Q071, inductance L072,
Capacitor C073 and inductance L073 lack sampling, rectification, filtering, partial pressure, secondary filter and the MCU signal processing of liquid protection,
The terminals of resistance R072 are connect by conducting wire with the terminals of inductance L071, and the terminals of inductance L071 are distinguished by conducting wire
It is connect with the terminals of capacitor C072, resistance R071 and capacitor C074, the terminals of capacitor C072 pass through conducting wire and transduction piece
No. 1 terminals of CN071 connect, and No. 2 terminals of transduction piece CN071 are connect by conducting wire with the terminals of capacitor C071,
The terminals of resistance R071 are connect with the terminals of capacitor C071 and power tube Q071 respectively by conducting wire, and power tube Q071
Terminals connects respectively by conducting wire with the terminals of capacitor C073 and inductance L072, the terminals of inductance L072 by conducting wire and
The terminals of inductance L073 connect；
S2, when transduction piece is in work and lacks liquid, entire ultrasonic atomizatio circuit will be in resonant state, and power tube at this time
The voltage value of the base circuit of Q071 will be reduced to 0V from 0.5V when working normally, and the present invention is examined using this variable signal
Protection to be surveyed, is fundamentally the resonance fundamental characteristics using Colpitts oscillation circuit, the consistency and adaptability of circuit are high,
The voltage value of the base circuit of power tube Q071 depends on the Vbe conducting voltage of Q071；
S3, scarce liquid signal is collected by lacking liquid signal acquisition point, then lacks liquid signal and is carried out by filter circuit module
The sampling and filtering of liquid signal are lacked, treated, and signal directly can carry out AD signal identification and processing by microcomputer, to complete
Protection is detected to the scarce liquid of ultrasonic atomizatio circuit, the RC filter circuit of filter circuit module preferred R073 and C075 lacks liquid signal
The quantity of sampled point is at least four, and four signal sampling points are respectively the scarce liquid of conducting wire between resistance R072 and inductance L071
Conducting wire between signal sampling point A, inductance L071 and capacitor C072 lacks liquid signal sampling point B, capacitor C071 and power tube Q071
Between conducting wire lack the conducting wire between liquid signal sampling point C and power tube Q071 and inductance L072 and lack liquid signal sampling point D.
As shown in Figure 4, using scarce liquid signal acquisition point A, and a zener diode ZD071 is increased, atomization circuit is just
Often voltage is the sum of the Vbe pressure drop of the pressure drop Vzd and Q071 of ZD071 at sampled signal when work, and voltage is about (0.6V+Vzd)
Left and right, when atomization circuit, which works, lacks liquid, voltage can become 0V at sampled signal, so that variable quantity is increased, according to circuit
It needs that the pressure drop of ZD071 can be selected, promotes the reliability for detecting this signal.
Embodiment 3
S1, first by extraneous quiescent operation voltage input to scarces liquid protection circuit, then pass through respectively resistance R072,
Inductance L071, capacitor C072, transduction piece CN071, resistance R071, capacitor C071, capacitor C074, power tube Q071, inductance L072,
Capacitor C073 and inductance L073 lack sampling, rectification, filtering, partial pressure, secondary filter and the MCU signal processing of liquid protection,
The terminals of resistance R072 are connect by conducting wire with the terminals of inductance L071, and the terminals of inductance L071 are distinguished by conducting wire
It is connect with the terminals of capacitor C072, resistance R071 and capacitor C074, the terminals of capacitor C072 pass through conducting wire and transduction piece
No. 1 terminals of CN071 connect, and No. 2 terminals of transduction piece CN071 are connect by conducting wire with the terminals of capacitor C071,
The terminals of resistance R071 are connect with the terminals of capacitor C071 and power tube Q071 respectively by conducting wire, and power tube Q071
Terminals connects respectively by conducting wire with the terminals of capacitor C073 and inductance L072, the terminals of inductance L072 by conducting wire and
The terminals of inductance L073 connect；
S2, when transduction piece is in work and lacks liquid, entire ultrasonic atomizatio circuit will be in resonant state, and power tube at this time
The voltage value of the base circuit of Q071 will be reduced to 0V from 0.7V when working normally, and the present invention is examined using this variable signal
Protection to be surveyed, is fundamentally the resonance fundamental characteristics using Colpitts oscillation circuit, the consistency and adaptability of circuit are high,
The voltage value of the base circuit of power tube Q071 depends on the Vbe conducting voltage of Q071；
S3, scarce liquid signal is collected by lacking liquid signal acquisition point, then lacks liquid signal and is carried out by filter circuit module
The sampling and filtering of liquid signal are lacked, treated, and signal directly can carry out AD signal identification and processing by microcomputer, to complete
Protection is detected to the scarce liquid of ultrasonic atomizatio circuit, the RC filter circuit of filter circuit module preferred R073 and C075 lacks liquid signal
The quantity of sampled point is at least four, and four signal sampling points are respectively the scarce liquid of conducting wire between resistance R072 and inductance L071
Conducting wire between signal sampling point A, inductance L071 and capacitor C072 lacks liquid signal sampling point B, capacitor C071 and power tube Q071
Between conducting wire lack the conducting wire between liquid signal sampling point C and power tube Q071 and inductance L072 and lack liquid signal sampling point D.
As shown in Figure 5, using scarce liquid signal acquisition point A, and a zener diode ZD071 and signal amplification electricity are increased
Road amplifies detection signal, to achieve the effect that increase change in detection signal amount, promotion detects the reliable of this signal
Property.
In summary
The present invention can be achieved to protect circuit by simplifying scarce liquid, can complete the sampling, filtering and the electricity that lack liquid protection signal
Road response is less than 200ms, strives for more times for MCU signal processing, system can stop atomizer work with the shorter time
Make, minimize the damage of transduction piece, improve the service life of ultrasonic ultrasonic delay line memory, it can be achieved that circuit it is simple and reliable and respond
Speed is fast, reduces product cost so as to simplify circuit.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of ultrasonic ultrasonic delay line memory lacks liquid guard method, it is characterised in that: specifically includes the following steps:
S1, pass through in extraneous quiescent operation voltage input to scarce liquid protection circuit first, then pass through resistance R072, inductance respectively
L071, capacitor C072, transduction piece CN071, resistance R071, capacitor C071, capacitor C074, power tube Q071, inductance L072, capacitor
C073 and inductance L073 lack sampling, rectification, filtering, partial pressure, secondary filter and the MCU signal processing of liquid protection；
S2, when transduction piece is in work and lacks liquid, entire ultrasonic atomizatio circuit will be in resonant state, and power tube Q071 at this time
Base circuit voltage value will from work normally when 0.5-0.7V be reduced to 0V；
S3, scarce liquid signal is collected by lacking liquid signal acquisition point, then lacks liquid signal and carries out lacking liquid by filter circuit module
The sampling and filtering of signal, treated, and signal directly can carry out AD signal identification and processing by microcomputer, to complete to super
The scarce liquid of sound atomization circuit detects protection.
2. a kind of ultrasonic ultrasonic delay line memory according to claim 1 lacks liquid guard method, it is characterised in that: in the step S2
The voltage value of the base circuit of power tube Q071 depends on the Vbe conducting voltage of Q071.
3. a kind of ultrasonic ultrasonic delay line memory according to claim 1 lacks liquid guard method, it is characterised in that: in the step S1
The terminals of resistance R072 are connect by conducting wire with the terminals of inductance L071, and the terminals of inductance L071 are distinguished by conducting wire
It is connect with the terminals of capacitor C072, resistance R071 and capacitor C074.
4. a kind of ultrasonic ultrasonic delay line memory according to claim 1 lacks liquid guard method, it is characterised in that: in the step S1
The terminals of capacitor C072 are connect by conducting wire with No. 1 terminals of transduction piece CN071, and No. 2 terminals of transduction piece CN071
Connect by conducting wire with the terminals of capacitor C071, the terminals of the resistance R071 by conducting wire respectively with capacitor C071 and function
The terminals of rate pipe Q071 connect, and the terminals of power tube Q071 are connect with capacitor C073 and inductance L072 respectively by conducting wire
Line end connection.
5. a kind of ultrasonic ultrasonic delay line memory according to claim 1 lacks liquid guard method, it is characterised in that: in the step S1
The terminals of inductance L072 are connect by conducting wire with the terminals of inductance L073.
6. a kind of ultrasonic ultrasonic delay line memory according to claim 1 lacks liquid guard method, it is characterised in that: in the step S3
The RC filter circuit of filter circuit module preferred R073 and C075.
7. a kind of ultrasonic ultrasonic delay line memory according to claim 1 lacks liquid guard method, it is characterised in that: in the step S3
The quantity for lacking liquid signal sampling point is at least four, and four signal sampling points are respectively between resistance R072 and inductance L071
Conducting wire lacks the conducting wire between liquid signal sampling point A, inductance L071 and capacitor C072 and lacks liquid signal sampling point B, capacitor C071 and function
Conducting wire between rate pipe Q071 lacks the conducting wire between liquid signal sampling point C and power tube Q071 and inductance L072 and lacks liquid signal
Sampled point D.
8. a kind of scarce liquid guard method of ultrasonic ultrasonic delay line memory described in -7 any one according to claim 1, it is characterised in that: logical
The voltage value for increasing component electricity high detection signal is crossed, or increases amplifying circuit and processing is amplified to detection signal, next pair
Change in detection signal amount optimizes, and then increases the variable quantity of signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910594937.9A CN110262353A (en) | 2019-07-03 | 2019-07-03 | A kind of scarce liquid guard method of ultrasonic ultrasonic delay line memory |
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| CN201910594937.9A CN110262353A (en) | 2019-07-03 | 2019-07-03 | A kind of scarce liquid guard method of ultrasonic ultrasonic delay line memory |
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| CN115468632A (en) * | 2022-10-19 | 2022-12-13 | 佛山市汉立电子科技有限公司 | Liquid shortage detection device and method and atomizer |
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