CN208339927U - A kind of anti-scald protection circuit of probe applied to ultrasonic conductivity gauge - Google Patents
A kind of anti-scald protection circuit of probe applied to ultrasonic conductivity gauge Download PDFInfo
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- CN208339927U CN208339927U CN201721019646.XU CN201721019646U CN208339927U CN 208339927 U CN208339927 U CN 208339927U CN 201721019646 U CN201721019646 U CN 201721019646U CN 208339927 U CN208339927 U CN 208339927U
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Abstract
The utility model relates to field of medical device, disclose a kind of anti-scald protection circuit of the probe applied to ultrasonic conductivity gauge.By configuring posive temperature coefficient thermistor and electronic refrigerating sheet in the end of ultrasonic electrode probe, it not only can be with the real-time temperature situation of monitoring probe, it can also be in the electronic refrigerating sheet of triggering starting in time when the temperature is excessively high, reduce the temperature of probe tip face, so that ultrasonic electrode probe is in use, burning heat sensation will not be generated to patient, promote treatment experience even therapeutic effect, prevent the malpractices such as scald skin occur.Simultaneously can also be by microprocessor to the resistance adjustment of digital regulation resistance, the accurate electric current for changing cooling power supply branch, and then realize the accurate adjustment to probe temperature, electric energy needed for saving refrigeration.In addition, the anti-scald protection circuit of the probe also have many advantages, such as easy to control, structure is simple, be easily achieved with it is low in cost, convenient for practical application and popularization.
Description
Technical field
The utility model relates to field of medical device, and in particular, to a kind of probe applied to ultrasonic conductivity gauge is anti-scald
Protect circuit.
Background technique
With the gradually development of modern medicine, ultrasonic conductivity gauge is introduced into transdermal medicine for treating field, passes through ultrasonic electric
Pole probe comes output ultrasonic wave and medium frequency electric, and gets electroporation in keratoderma using instantaneous high pressure pulse, promotes drug
Infiltration, transmitting and absorption in skin and tissue compensate for traditional transdermal administration process osmotic effect difference and drug utilization
The low disadvantage of rate.
Ultrasonic wave is able to enter human body deep tissues cell, and drug, skin, subcutaneous tissue etc. can be by the energy of ultrasonic wave
It is converted to thermal energy, makes the blood vessel dilatation at these positions, the bore of skin pore, sudoriferous duct etc. expands, to enhance absorption medicine
The ability of object.The ultrasonic wave of the higher-order of oscillation can change the structure of skin layer in communication process, and keep the lipid of cuticula double
Molecular layer becomes disordering, increases its permeability.In addition ultrasonic wave sound miniflow effect can also make drug to skin, sweat gland and
The channel of hair follicle is transported, and this sound miniflow can also generate shearforce, to reduce the barrier action of skin, to make drug more
It is easy diffusion.The simultaneously medium as caused by the effect of ultrasonic wave and intracellular gas molecule, the vibration of bubble and bubble
Rupture forms gap or empty pocket, referred to as cavitation effect, and portion forms some channels within the organization, greatly promotes the transdermal suction of drug
It receives.
Medium frequency electric is stimulated current of the pulse frequency in 1~100kHz.When medium frequency electric acts on therapentic part, cause human body
The movement of electronics and ion in organizing mainly generates the physical and chemical reaction of polarization or depolarising in nerve endings, and then causes to feel
The local physiological effect of nerve conduction obstacle, have analgesia, dredging the channel, promote blood circulation, improve nutrition supply, excite by
The effect damaged regeneration, enhance body's immunity.
The fuel factor of ultrasonic wave and medium frequency electric can promote the Transdermal absorption of drug in the therapeutic process of ultrasonic conductivity gauge, together
When also result in ultrasonic electrode probe and skin histology temperature and increase, cause patient to generate discomfort and even burn.Although existing
There are a plurality of ultrasonic conductivity gauges to be developed at oneself and apply in clinical treatment, but the temperature of ultrasonic electrode probe is not become
The measure of being correspondingly improved is made in change, affects the treatment experience even therapeutic effect of patient.
Utility model content
For aforementioned existing ultrasonic electrode probe discomfort, or even the skin that can burn can be generated to patient in use
The problem of skin tissue, the utility model provide a kind of anti-scald protection circuit of the probe applied to ultrasonic conductivity gauge.
The technical solution adopted in the utility model provides a kind of anti-scald protection electricity of the probe applied to ultrasonic conductivity gauge
Road, including microprocessor, posive temperature coefficient thermistor, first resistor, operational amplifier, second resistance, 3rd resistor, the 4th
Resistance, MOS switch pipe, digital regulation resistance, electronic refrigerating sheet and the 5th resistance, wherein the posive temperature coefficient thermistor and
The electronic refrigerating sheet is arranged in the end of probe, and makes the cold end of the electronic refrigerating sheet towards the end face of probe；It is described just
Anode the first DC power supply of electrical connection of temperature coefficient thermistor, the cathode of the posive temperature coefficient thermistor are electrically connected respectively
Meet one end of the first resistor and the first input end of the operational amplifier, the other end ground connection of the first resistor, institute
The second input terminal for stating operational amplifier is electrically connected one end of the second resistance, and the other end of the second resistance is electrically connected respectively
Connect the output end of the operational amplifier and the input terminal of the microprocessor；The output end of the microprocessor is electrically connected
The other end of the controlled end of one end of the 3rd resistor and the digital regulation resistance, the 3rd resistor is electrically connected the MOS
The grid of switching tube, one end of the 4th resistance are electrically connected the second DC power supply, the other end electrical connection of the 4th resistance
The drain electrode of the MOS switch pipe, the source electrode of the MOS switch pipe are electrically connected one end of the digital regulation resistance, the number electricity
The other end of position device is electrically connected the anode of the electronic refrigerating sheet, and the cathode of the electronic refrigerating sheet is electrically connected the 5th resistance
One end, the 5th resistance the other end ground connection.
Optimization, when the digital regulation resistance uses the digital regulation resistance of model TPL0401A/B, the number electricity
The VDD pin of position device is electrically connected first DC power supply, and the H pin and W pin of the digital regulation resistance are electrically connected institute
The source electrode of MOS switch pipe is stated, the GND pin of the digital regulation resistance is electrically connected the anode of the electronic refrigerating sheet, the number
The SCL pin and SDA pin of potentiometer are electrically connected the output end of the microprocessor by I2C bus as controlled end.
Optimization, the electronic refrigerating sheet uses the electronic refrigerating sheet of model ATEC1-49.
Optimization, first capacitor is parallel at the both ends of the first resistor.
Optimization, further include the combined aural and visual alarm for being electrically connected the microprocessor.
Optimization, the microprocessor uses the ARM chip of model STM32F103 series.
Optimization, first DC power supply is 3.3V DC power supply, and second DC power supply is 5V DC power supply.
To sum up, using the probe anti-scald protection circuit provided by the utility model for being applied to ultrasonic conductivity gauge, have such as
Down the utility model has the advantages that (1) is by configuring posive temperature coefficient thermistor and electronic refrigerating sheet in the end of ultrasonic electrode probe, not only
Probe can also be reduced in the electronic refrigerating sheet of triggering starting in time when the temperature is excessively high with the real-time temperature situation of monitoring probe
The temperature of end face will not generate burning heat sensation to patient, promote treatment experience so that ultrasonic electrode probe is in use
Even therapeutic effect prevents the malpractices such as scald skin occur；It (2) can be by microprocessor to the resistance of digital regulation resistance
It adjusts, the accurate electric current for changing cooling power supply branch, and then realizes the accurate adjustment to probe temperature, electricity needed for saving refrigeration
Energy；(3) by using the electronic refrigerating sheet of model ATEC1-49, its unique cirque structure can be utilized, so that it is being visited
When cephalic par configures, the installation of other components will not influence, it can be ensured that the normal work of ultrasound electric machine probe；(4) pass through and configure
Combined aural and visual alarm when the temperature is excessively high, can also carry out sound-light alarm, remind surrounding people to pay attention to avoiding risk in time；(5) institute
State the anti-scald protection circuit of probe also have many advantages, such as easy to control, structure simply, be easily achieved with it is low in cost, convenient for actually answering
With and promote.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the electrical block diagram of the anti-scald protection circuit of probe provided by the utility model.
Specific embodiment
Hereinafter reference will be made to the drawings, is described in detail by way of example provided by the utility model applied to ultrasonic conductance
The anti-scald protection circuit of the probe of instrument.It should be noted that being used to help understand this for the explanation of these way of example
Utility model, but do not constitute the restriction to the utility model.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes
System, for example, A and/or B, can indicate: individualism A, individualism B exist simultaneously tri- kinds of situations of A and B, the terms
"/and " it is to describe another affiliated partner relationship, indicate may exist two kinds of relationships, for example, A/ and B, can indicate: individually depositing
In A, two kinds of situations of individualism A and B, in addition, character "/" herein, typicallying represent forward-backward correlation object is a kind of "or" pass
System.
Embodiment one
Fig. 1 shows the electrical block diagram of the anti-scald protection circuit of probe provided by the utility model.
The anti-scald protection circuit of probe for being applied to ultrasonic conductivity gauge provided in this embodiment, including microprocessor, just
Temperature coefficient thermistor PTC1, first resistor R1, operational amplifier U1, second resistance R2,3rd resistor R3, the 4th resistance
R4, MOS switch pipe MOS1, digital regulation resistance, electronic refrigerating sheet and the 5th resistance R5, wherein the positive temperature coefficient temperature-sensitive electricity
Resistance PTC1 and the electronic refrigerating sheet are arranged in the end of probe, and make the cold end of the electronic refrigerating sheet towards the end of probe
Face；Anode the first DC power supply VCC1 of electrical connection of the posive temperature coefficient thermistor PTC1, the positive temperature coefficient temperature-sensitive
The cathode of resistance PTC1 is electrically connected one end of the first resistor R1 and the first input end IN of the operational amplifier U1
+, the other end ground connection of the first resistor R1, the second input terminal IN- electrical connection of the operational amplifier U1 second electricity
Hinder one end of R2, the other end of the second resistance R2 is electrically connected the output end OUT of the operational amplifier U1 and described
The input terminal of microprocessor；The output end of the microprocessor be electrically connected the 3rd resistor R3 one end and the number
The controlled end of potentiometer, the other end of the 3rd resistor R3 are electrically connected the grid of the MOS switch pipe MOS1, the 4th electricity
The one end for hindering R4 is electrically connected the other end electrical connection MOS switch pipe of the second DC power supply VCC2, the 4th resistance R4
The source electrode of the drain electrode of MOS1, the MOS switch pipe MOS1 is electrically connected one end of the digital regulation resistance, the digital regulation resistance
The other end is electrically connected the anode of the electronic refrigerating sheet, and the cathode of the electronic refrigerating sheet is electrically connected the one of the 5th resistance R5
End, the other end ground connection of the 5th resistance R5.
As shown in Figure 1, in the structure of the anti-scald protection circuit of the probe, due to the posive temperature coefficient thermistor
PTC1 has the thermal sensitivity of positive temperature coefficient, so that it can cause resistance significantly to increase with the raising of probe end temperature
Add, so assumes that the operational amplifier U1 is ideal operational amplifier, then the output end level of the operational amplifier U1
Are as follows:
In formula, AVDFor the gain of operational amplifier U1, R1 is the resistance value of first resistor R1, RPTC1Be positive temperature coefficient thermal
The instant resistance value of resistance PTC1.
Thus with RPTC1The increase (temperature of probe end also necessarily increases at this time) of value, the input of the microprocessor
End level can be transformed to high level from low level, so as to so that the microprocessor can perceive the temperature feelings of probe end
Condition, and can be defeated by the grid to the MOS switch pipe MOS1 in high level (reflection probe end is when the temperature is excessively high)
High level out can be connected by the second DC power supply VCC2, the 4th resistance R4, the MOS switch pipe MOS1, the number
The refrigeration power supply branch that word potentiometer, the electronic refrigerating sheet and the 5th resistance R5 are constituted, triggering start the electronics system
Cold, the temperature of probe tip face is reduced, so that ultrasonic electrode probe is in use, patient will not be generated scorching hot
Sense promotes treatment experience even therapeutic effect, prevents the malpractices such as scald skin occur.Micro- place can also be passed through simultaneously
Device is managed to the resistance adjustment of the digital regulation resistance, the accurate electric current for changing cooling power supply branch, and then is realized to probe temperature
Accurate adjustment, save refrigeration needed for electric energy.In addition, as an example, as shown in Figure 1, the microprocessor uses model
For the ARM chip of STM32F103 series.The first DC power supply VCC1 is 3.3V DC power supply, second DC power supply
VCC2 is 5V DC power supply.
Optimization, when the digital regulation resistance uses the digital regulation resistance of model TPL0401A/B, the number electricity
The VDD pin of position device is electrically connected the first DC power supply VCC1, and the H pin and W pin of the digital regulation resistance are electrically connected respectively
The source electrode of the MOS switch pipe MOS1 is connect, the GND pin of the digital regulation resistance is electrically connected the anode of the electronic refrigerating sheet,
The SCL pin and SDA pin of the digital regulation resistance pass through I2C bus (Inter- as controlled end
IntegratedCircuit bus, a kind of twin wire universal serial bus developed by PHILIPS company, for connecting microprocessor
And its peripheral equipment) it is electrically connected the output end of the microprocessor.
Optimization, the electronic refrigerating sheet preferably uses the electronic refrigerating sheet of model ATEC1-49.Due to the electronics system
Cold has cirque structure (its outer annular diameter be 26mm, annular diameters 10mm), so that it is when probe end configures, no
It will affect the installation of other components, it can be ensured that the normal work of ultrasound electric machine probe.
Optimization, first capacitor C1 is parallel at the both ends of the first resistor R1.As shown in Figure 1, by described in arrangement
First capacitor C1 can filter out alternating component, it is ensured that the steady operation of circuit.
Optimization, further include the combined aural and visual alarm for being electrically connected the microprocessor.As shown in Figure 1, by configuring the sound
Light crossing-signal when the temperature is excessively high, can also carry out sound-light alarm, remind surrounding people to pay attention to avoiding risk in time.
The anti-scald protection circuit of probe for being applied to ultrasonic conductivity gauge provided in this embodiment, has following beneficial to effect
Fruit: (1) it by the end of ultrasonic electrode probe configure posive temperature coefficient thermistor and electronic refrigerating sheet, can not only monitor
The real-time temperature situation of probe can also reduce the temperature of probe tip face in the electronic refrigerating sheet of triggering starting in time when the temperature is excessively high
Degree will not generate burning heat sensation to patient so that ultrasonic electrode probe is in use, promote treatment experience and even treat
Effect prevents the malpractices such as scald skin occur；It (2) can be by microprocessor to the resistance adjustment of digital regulation resistance, essence
Really change the electric current of cooling power supply branch, and then realizes the accurate adjustment to probe temperature, electric energy needed for saving refrigeration；(3)
By using the electronic refrigerating sheet of model ATEC1-49, its unique cirque structure can be utilized, so that it is in probe end
When configuration, the installation of other components will not influence, it can be ensured that the normal work of ultrasound electric machine probe；(4) by configuring acousto-optic report
Alert device when the temperature is excessively high, can also carry out sound-light alarm, remind surrounding people to pay attention to avoiding risk in time；(5) probe
Anti-scald protection circuit also have many advantages, such as easy to control, structure is simple, be easily achieved with it is low in cost, convenient for practical application and push away
Extensively.
As described above, the utility model can be realized preferably.For a person skilled in the art, practical new according to this
The introduction of type designs various forms of anti-scald protection circuits of the probe for being applied to ultrasonic conductivity gauge and does not need creative labor
It is dynamic.These embodiments are changed in the case where not departing from the principles of the present invention and spirit, modify, replace, are integrated
It is still fallen in the protection scope of the utility model with modification.
Claims (7)
1. a kind of anti-scald protection circuit of probe applied to ultrasonic conductivity gauge, which is characterized in that including microprocessor, positive temperature system
Number thermistor (PTC1), first resistor (R1), operational amplifier (U1), second resistance (R2), 3rd resistor (R3), the 4th electricity
Hinder (R4), MOS switch pipe (MOS1), digital regulation resistance, electronic refrigerating sheet and the 5th resistance (R5), wherein the positive temperature system
Number thermistor (PTC1) and the electronic refrigerating sheet are arranged in the end of probe, and make the cold end direction of the electronic refrigerating sheet
The end face of probe；
The anode electrical connection the first DC power supply (VCC1) of the posive temperature coefficient thermistor (PTC1), the positive temperature coefficient
The cathode of thermistor (PTC1) be electrically connected the first resistor (R1) one end and the operational amplifier (U1)
One input terminal (IN+), the other end ground connection of the first resistor (R1), the second input terminal of the operational amplifier (U1)
(IN-) it is electrically connected one end of the second resistance (R2), the other end of the second resistance (R2) is electrically connected the operation
The input terminal of output end (OUT) and the microprocessor of amplifier (U1)；
The output end of the microprocessor be electrically connected the 3rd resistor (R3) one end and the digital regulation resistance by
End is controlled, the other end of the 3rd resistor (R3) is electrically connected the grid of the MOS switch pipe (MOS1), the 4th resistance (R4)
One end be electrically connected the second DC power supply (VCC2), the other end of the 4th resistance (R4) is electrically connected the MOS switch pipe
(MOS1) drain electrode, the source electrode of the MOS switch pipe (MOS1) are electrically connected one end of the digital regulation resistance, the number current potential
The other end of device is electrically connected the anode of the electronic refrigerating sheet, and the cathode of the electronic refrigerating sheet is electrically connected the 5th resistance
(R5) one end, the other end ground connection of the 5th resistance (R5).
2. a kind of anti-scald protection circuit of probe applied to ultrasonic conductivity gauge as described in claim 1, which is characterized in that work as institute
When stating digital regulation resistance of the digital regulation resistance using model TPL0401A/B, the VDD pin electrical connection of the digital regulation resistance
First DC power supply (VCC1), the H pin and W pin of the digital regulation resistance are electrically connected the MOS switch pipe
(MOS1) source electrode, the GND pin of the digital regulation resistance are electrically connected the anode of the electronic refrigerating sheet, the digital regulation resistance
SCL pin and SDA pin as controlled end, the output end of the microprocessor is electrically connected by I2C bus.
3. a kind of anti-scald protection circuit of probe applied to ultrasonic conductivity gauge as described in claim 1, which is characterized in that described
Electronic refrigerating sheet uses the electronic refrigerating sheet of model ATEC1-49.
4. a kind of anti-scald protection circuit of probe applied to ultrasonic conductivity gauge as described in claim 1, which is characterized in that in institute
The both ends for stating first resistor (R1) are parallel with first capacitor (C1).
5. a kind of anti-scald protection circuit of probe applied to ultrasonic conductivity gauge as described in claim 1, which is characterized in that also wrap
Include the combined aural and visual alarm for being electrically connected the microprocessor.
6. a kind of anti-scald protection circuit of probe applied to ultrasonic conductivity gauge as described in claim 1, which is characterized in that described
Microprocessor uses the ARM chip of model STM32F103 series.
7. a kind of anti-scald protection circuit of probe applied to ultrasonic conductivity gauge as described in claim 1, which is characterized in that described
First DC power supply (VCC1) is 3.3V DC power supply, and second DC power supply (VCC2) is 5V DC power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721019646.XU CN208339927U (en) | 2017-08-15 | 2017-08-15 | A kind of anti-scald protection circuit of probe applied to ultrasonic conductivity gauge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721019646.XU CN208339927U (en) | 2017-08-15 | 2017-08-15 | A kind of anti-scald protection circuit of probe applied to ultrasonic conductivity gauge |
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| CN208339927U true CN208339927U (en) | 2019-01-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110974397A (en) * | 2019-12-16 | 2020-04-10 | 广州皓醒湾科技有限公司 | Ice-feeling adjustable depilator |
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2017
- 2017-08-15 CN CN201721019646.XU patent/CN208339927U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110974397A (en) * | 2019-12-16 | 2020-04-10 | 广州皓醒湾科技有限公司 | Ice-feeling adjustable depilator |
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