CN106249777A - A kind of surface temperature control system of ultrasonic probe - Google Patents
A kind of surface temperature control system of ultrasonic probe Download PDFInfo
- Publication number
- CN106249777A CN106249777A CN201610867344.1A CN201610867344A CN106249777A CN 106249777 A CN106249777 A CN 106249777A CN 201610867344 A CN201610867344 A CN 201610867344A CN 106249777 A CN106249777 A CN 106249777A
- Authority
- CN
- China
- Prior art keywords
- ultrasonic probe
- temperature
- controller
- electrothermal membrane
- flexible electrothermal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
Abstract
The invention discloses the surface temperature control system of a kind of ultrasonic probe, ultrasonic probe includes ultrasonic probe body and covers the ultrasonic probe housing of ultrasonic probe body remainder in addition to the surface of emission, and surface temperature control system includes temperature sensor, temperature sensing circuit, controller, power supply, switch driving circuit and flexible electrothermal membrane；Temperature sensor is connected to controller by temperature sensing circuit, and controller is connected to flexible electrothermal membrane by switch driving circuit；Temperature sensor is for detecting the temperature of ultrasonic probe；Controller is by the temperature value detected by temperature sensing circuit collecting temperature sensor, and controls the on off state of switch driving circuit according to temperature value；Flexible electrothermal membrane laminating is fixed on the outer surface of ultrasonic probe housing, heats ultrasonic probe under the control of switch driving circuit.The design of this system is simple, it is easy to accomplish, precision is high, is easily controlled, it is possible to simplify the structure of conventional ultrasound probe temperature control system.
Description
Technical field
The invention belongs to medical ultrasonic engineering field, relate to the surface temperature control system of a kind of ultrasonic probe.
Background technology
In medical ultrasonic measurement or imaging process, measurement result is had a great impact by the temperature of probe.Such as super
Sound measurement skeleton aspect, the variations in temperature of ultrasonic probe can cause reception signal to there is deviation.Owing to ultrasonic advantage own is special
Point so that ultrasonic bone density instrument is used widely in terms of bone density measurement, but its measurement result can be had the biggest by temperature
Impact, so typically all the temperature of sensor can be carried out constant control in the design of ultrasonic bone density instrument.
External temperature control system many employings container type of current ultrasonic probe or ambient temperature formula.Wherein container type is general
Being using capsule and groove as container, during use, fill water or other liquid in container, ultrasonic probe is placed in container, passes through
The temperature of the liquid in container carries out constant control reach the temperature constant to ultrasonic probe and control.Ambient temperature formula temperature
Control system is equipment inner heating device, by the ambient temperature of whole measurement device interior is carried out constant control so that super
Environment around sonic probe keeps a stationary temperature.But, both approaches is required for the temperature of the environment bigger to
Degree is controlled, and causes that the volume of system is relatively big, use inconvenience, there is also that power consumption is big and ambient temperature is difficult to accurately control simultaneously
The problems such as system.
Summary of the invention
The present invention is for avoiding the weak point existing for above-mentioned prior art, it is provided that the surface temperature of a kind of ultrasonic probe
Control system, it is intended to simplify the structure of conventional ultrasound probe temperature control system, improve temperature controlled precision.
The present invention solves technical problem, adopts the following technical scheme that
The surface temperature control system of a kind of ultrasonic probe, described ultrasonic probe includes ultrasonic probe body and covers described
The ultrasonic probe housing of ultrasonic probe body remainder in addition to the surface of emission；Described surface temperature control system includes temperature
Sensor, temperature sensing circuit, controller, power supply, switch driving circuit and flexible electrothermal membrane；Described temperature sensor is by temperature
Degree testing circuit is connected to controller, and described controller is connected to described flexible electrothermal membrane by switch driving circuit；Described electricity
Source is that described temperature sensor, temperature sensing circuit, flexible electrothermal membrane are powered with controller；
Described flexible electrothermal membrane refers to have good flexible Electric radiant Heating Film.
Described temperature sensor is for detecting the surface temperature of described ultrasonic probe；Described controller is by temperature detection electricity
Road gathers the temperature value detected by described temperature sensor, and controls the switch shape of switch driving circuit according to described temperature value
State；The laminating of described flexible electrothermal membrane is fixed on the outer surface of described ultrasonic probe housing, in the control of described switch driving circuit
Under described ultrasonic probe is heated.
Described flexible electrothermal membrane can be with the outer surface of ultrasonic probe housing described in all standing, it is also possible to part covers described super
The outer surface of sonic probe housing.During all standing, described temperature sensor is fixed on the outer surface of described flexible electrothermal membrane or fixing
Between described flexible electrothermal membrane and described ultrasonic probe housing；When part covers, described temperature sensor is fixed on described soft
The outer surface of property Electric radiant Heating Film and/or described ultrasonic probe housing be not by the outer surface of flexible electrothermal membrane covering part.
It is provided with temperature threshold in described controller；Described controller is by by the temperature value collected and described temperature
Degree threshold value compares, and controls the on off state of switch driving circuit, thus whether controls flexible electrothermal membrane to described ultrasonic
Probe heats.Ultrasonic probe is when measuring human body, and the temperature threshold general tree human body of setting damages, it is proposed that set
Temperature threshold be not higher than 50 DEG C.
Described temperature sensor is digital temperature sensor or analog temperature sensor.When using analog temperature sensor
Time, temperature sensing circuit need to separately set, and when using digital temperature sensor, temperature sensing circuit, only need to be by it containing within it
It is directly connected to controller.
The rated power of described flexible electrothermal membrane is not less than 0.1W.
Described switch driving circuit includes a NPN audion and a N-channel MOS pipe；The drain electrode of metal-oxide-semiconductor is through flexible electrothermal membrane
Connecting the power supply of flexible electrothermal membrane, source ground, grid connects described power supply by resistance R2；The base stage of audion
Connected the I/O port of controller end by resistance R3, grounded emitter, colelctor electrode is connected to the grid of N-channel MOS pipe；Work as controller
During the I/O port output low level being connected with audion, described switch driving circuit is opened, and flexible electrothermal membrane begins to warm up；Controller
During the I/O port output high level being connected with audion, described switch driving circuit is closed, and flexible electrothermal membrane stops heating.This switch
Drive circuit also can be made up of electrical switch, other kinds of mos pipe or other kinds of audion.
Described controller is the chip having and controlling function or is controlled, by having, the device that the chip of function is constituted, such as control
Device processed can be single-chip microcomputer, digital signal processor (DSP), FPGA, PLD etc.
In the entire system, after the surface temperature of temperature sensor detection ultrasonic probe, will through excess temperature detection circuit
Temperature data is sent in controller, and controller controls switch driving circuit by the temperature data obtained is carried out judgement, opens
Close drive circuit, according to the signal of controller, the heater circuit of heating film is carried out on-off control, it is achieved the control of heating-up temperature
System.
Beneficial effects of the present invention is embodied in:
1, the present invention is by the outer surface sticking flexible Electric radiant Heating Film at ultrasonic probe housing, adds ultrasonic probe
Heat, simple in construction, takies that volume is little, homogeneous heating；Utilize temperature sensor that the temperature of ultrasonic probe is detected, degree of accuracy
High；Utilize the controller control to switch driving circuit, it is achieved the accurate control whether flexible electrothermal membrane is heated, effectively simultaneously
The temperature that ensure that ultrasonic probe be constantly in optimum state, control accuracy is high, control method is simple；
2, the switch driving circuit that the present invention is built by audion and metal-oxide-semiconductor, low in energy consumption, efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of surface temperature control system of the present invention；
Fig. 2 is flexible electrothermal membrane and temperature sensor the first modes of emplacement in ultrasonic probe housing outer surface；
Fig. 3 is flexible electrothermal membrane and the temperature sensor the second modes of emplacement in ultrasonic probe housing outer surface；
Fig. 4 is the structure chart of switch driving circuit；
Label in figure: 1 flexible electrothermal membrane；2 ultrasonic probe housings；3 surface of emissions；4 temperature sensors.
Detailed description of the invention
Below in conjunction with accompanying drawing and case study on implementation, the present invention will be further described.
As depicted in figs. 1 and 2, the invention provides the surface temperature control system of a kind of ultrasonic probe, the most ultrasonic spy
Head includes ultrasonic probe body and covers the ultrasonic probe housing 2 of ultrasonic probe body remainder in addition to the surface of emission 3.
Surface temperature control system includes temperature sensor 4, temperature sensing circuit, controller, power supply, switch driving circuit
With flexible electrothermal membrane 1；Temperature sensor is connected to controller by temperature sensing circuit, and controller is by switch driving circuit even
It is connected to flexible electrothermal membrane；Power supply is that temperature sensor, temperature sensing circuit, flexible electrothermal membrane are powered with controller；The present embodiment
Flexible electrothermal membrane direct market buy.
Temperature sensor is for detecting the temperature of ultrasonic probe；Controller passes through temperature sensing circuit collecting temperature sensor
Detected temperature value, and the on off state of switch driving circuit is controlled according to temperature value；Flexible electrothermal membrane 1 laminating is fixed on
The outer surface of ultrasonic probe housing 2, heats ultrasonic probe under the control of switch driving circuit.
Concrete, power supply includes the first power supply and second source.First power supply be temperature sensor, temperature sensing circuit with
And controller powers, the first power supply can directly be powered for temperature sensor, it is also possible to is powered by controller；Second source is
Flexible electrothermal membrane is powered.When the first power supply is identical with second source voltage, the first power supply and second source can be as one
Power supply uses, i.e. whole system all uses the first power supply or second source to power.
In the entire system, temperature sensor is used for detecting heating film and/or ultrasonic probe external temperature as ultrasonic spy
The temperature of head；Temperature value is passed in controller, and controller controls switch drive by the temperature data obtained carries out judgement
Galvanic electricity road, the power supply accessing heating film is carried out turning on control by switch driving circuit according to the signal of controller.By in real time
Temperature survey, data are delivered to controller and judge, whether the heating controlling on-off circuit and heating film is accomplished temperature
Constant control.
When being embodied as, as in figure 2 it is shown, flexible electrothermal membrane can partly cover the outer surface of ultrasonic probe housing, temperature
Sensor 4 be fixed on the outer surface of flexible electrothermal membrane 1 and/or ultrasonic probe housing 2 not by flexible electrothermal membrane covering part outside
Surface；Which efficiency of heating surface is the highest, but which is easy to cooling, uses heat sink can act on ultrasonic probe and does not covers
The place of flexible electrothermal membrane, accelerates cooling rate.The simultaneously surface temperature of measuring probe and flexible electrical in temperature taking process
Within hotting mask temperature, surface temperature of probe and flexible electric heating film temperature are intended to be maintained at zone of reasonableness, to ensure the use of probe
Safety and reliability, the user of ultrasonic probe to be ensured and tester's safety.
When on the outer surface that temperature sensor is simultaneously attached to flexible electric heating film outer surface and ultrasonic probe housing, permissible
By comparing the temperature at two sensors, knowing heats, under normal condition, the temperature at two can keep substantially
Unanimously.The temperature of controller collection is as the criterion with the temperature sensor of heating film position.In the less demanding situation of temperature accuracy
Under, two temperature sensors can also be used alone,
As it is shown on figure 3, flexible electrothermal membrane can also the outer surface of all standing ultrasonic probe housing.Which has and preferably adds
The thermal efficiency so that probe reaches design temperature faster.Which cooling rate is slower.Temperature sensor 4 is placed directly within flexibility
In Electric radiant Heating Film, by measuring the temperature of flexible electrothermal membrane, indirectly reflect the skin temperature of ultrasonic probe.Temperature sensor 4 is also
Can be placed between flexible electrothermal membrane 1 and ultrasonic probe housing 2, measure flexible electrothermal membrane 1 and the temperature of ultrasonic probe housing 2 simultaneously
Degree.The metering system of this single temperature sensor can reduce cost with simplified system, easily facilitates use, but reduces temperature
Certainty of measurement.
When being embodied as, in controller, it is provided with temperature threshold；Controller is by by the temperature value collected and temperature
Degree threshold value compares, and controls the on off state of switch driving circuit, thus whether controls flexible electrothermal membrane to ultrasonic probe
Heat.When the temperature of sensor acquisition is more than or equal to temperature threshold, switch driving circuit is off；Work as sensing
When the temperature that device gathers is less than temperature threshold, switch driving circuit is in closure state.Controller is the core having and controlling function
Sheet, such as single-chip microcomputer, digital signal processor (DSP), FPGA, PLD, or controlled, by having, the device that the chip of function is constituted
Part.
Temperature sensor is digital temperature sensor or analog temperature sensor.
The rated power of flexible electrothermal membrane is not less than 0.1W.
As shown in Figure 4, it is illustrated that for switch driving circuit, switch driving circuit includes a NPN audion and a N-channel MOS
Pipe；The drain electrode of metal-oxide-semiconductor connects power supply, source ground through flexible electrothermal membrane, and grid connects power supply by resistance R2；Three
The base stage of pole pipe connects the I/O port of controller end by resistance R3, and grounded emitter, colelctor electrode is connected to the grid of N-channel MOS pipe
Pole；When the I/O port output low level that controller is connected with audion, switch driving circuit is opened, and flexible electrothermal membrane starts to add
Heat；During output high level, described switch driving circuit will be closed, and flexible electrothermal membrane stops heating.
In figure, adjustable resistance R1 is flexible electric heating film heating device, and controller is by arranging the IO of the controller of corresponding connection
The low and high level of mouth carries out on-off control to on-off circuit, when controller IO exports high level, and triode ON, metal-oxide-semiconductor
Grounded-grid, now metal-oxide-semiconductor open circuit, thus now switch driving circuit close, flexible electrothermal membrane power-off；Work as controller
When IO output is low, audion ends, and the grid of metal-oxide-semiconductor connects high level by resistance R2, now metal-oxide-semiconductor open circuit, so now opening
Pass circuit is opened, and flexible electrothermal membrane is electrified potential source VCC and begins to warm up.During measurement, first open on-off circuit so that flexible electric heating
Film heats, and temperature sensor simultaneously is started working.When flexible electric heating film temperature reaches preset temperature, controller control switch
Circuit makes on-off circuit close so that voltage source VCC cannot power for flexible electrothermal membrane, thus flexible electrothermal membrane stops adding
Heat.When flexible electric heating film temperature is down to set below threshold value, controller again makes on-off circuit turn on, makes flexible electrothermal membrane
Reheat.By this repetitive process so that ultrasonic probe surface keeps the temperature set.
The work process of system is as follows: first design temperature threshold value, and switch driving circuit conducting makes flexible electrothermal membrane start
Heating, detects the temperature of temperature sensor simultaneously, when temperature is not up to setting value, switches on power, and continues heating.When temperature is big
When equal to setting value, deenergization, stop heating, continue detection temperature.When temperature drops to below threshold value, it is further continued for heating.
By this working method, the external temperature of ultrasonic probe remains at about set temperature value in system operation.
In the present embodiment, in order to reduce the temperature impact on probe further, between ultrasonic probe measures, can
With the first preheated one-section time, after i.e. probe is maintained at design temperature a period of time, when probe each several part temperature basically identical it
After, then measure.Temperature threshold is not higher than 50 DEG C.When measuring human body, the temperature value of setting is just being generally not more than human body
Chang Tiwen.The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention
Any amendment, equivalent and improvement etc. with being made within principle, should be included within the scope of the present invention.
Claims (8)
1. a surface temperature control system for ultrasonic probe, described ultrasonic probe includes ultrasonic probe body and covers described super
The ultrasonic probe housing of sonic probe body remainder in addition to the surface of emission, it is characterised in that:
Described surface temperature control system includes temperature sensor, temperature sensing circuit, controller, power supply, switch driving circuit
And flexible electrothermal membrane；Described temperature sensor is connected to controller by temperature sensing circuit, and described controller is driven by switch
Galvanic electricity road is connected to described flexible electrothermal membrane；Described power supply be described temperature sensor, temperature sensing circuit, flexible electrothermal membrane with
Controller is powered；
Described temperature sensor is for detecting the surface temperature of described ultrasonic probe；Described controller is adopted by temperature sensing circuit
Collect the temperature value detected by described temperature sensor, and control the on off state of switch driving circuit according to described temperature value；
The laminating of described flexible electrothermal membrane is fixed on the outer surface of described ultrasonic probe housing, right under the control of described switch driving circuit
Described ultrasonic probe heats.
The surface temperature control system of a kind of ultrasonic probe the most according to claim 1, it is characterised in that:
The outer surface of ultrasonic probe housing described in described flexible electrothermal membrane all standing, described temperature sensor is fixed on described flexibility
The outer surface of Electric radiant Heating Film or be fixed between described flexible electrothermal membrane and described ultrasonic probe housing；
Or described flexible electrothermal membrane part covers the outer surface of described ultrasonic probe housing, described temperature sensor is fixed on described
The outer surface of flexible electrothermal membrane and/or described ultrasonic probe housing be not by the outer surface of flexible electrothermal membrane covering part.
3. according to the surface temperature control system of a kind of ultrasonic probe described in claims 1 or 2, it is characterised in that: in institute
It is provided with temperature threshold in stating controller；Described controller is by comparing the temperature value collected and described temperature threshold
Relatively, control the on off state of switch driving circuit, thus control whether flexible electrothermal membrane heats described ultrasonic probe.
The surface temperature control system of a kind of ultrasonic probe the most according to claim 1 and 2, it is characterised in that: described temperature
Degree sensor is digital temperature sensor or analog temperature sensor.
The surface temperature control system of a kind of ultrasonic probe the most according to claim 1 and 2, it is characterised in that: described soft
The rated power of property Electric radiant Heating Film is not less than 0.1W.
The surface temperature control system of a kind of ultrasonic probe the most according to claim 1 or claim 2, it is characterised in that:
Described switch driving circuit includes a NPN audion and a N-channel MOS pipe；The drain electrode of metal-oxide-semiconductor connects through flexible electrothermal membrane
Power supply, source ground, grid connects described power supply by resistance R2；The base stage of audion connects control by resistance R3
The I/O port of device end processed, grounded emitter, colelctor electrode is connected to the grid of N-channel MOS pipe；
When the I/O port output low level that controller is connected with audion, described switch driving circuit is opened, and flexible electrothermal membrane is opened
Begin to heat；When the I/O port output high level that controller is connected with audion, described switch driving circuit is closed, flexible electrothermal membrane
Stop heating.
The surface temperature control system of a kind of ultrasonic probe the most according to claim 3, it is characterised in that: described temperature threshold
Value not higher than 50 DEG C.
The surface temperature control system of a kind of ultrasonic probe the most according to claim 1 and 2, it is characterised in that: described control
Device processed is the chip having and controlling function or is controlled, by having, the device that the chip of function is constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610867344.1A CN106249777A (en) | 2016-09-29 | 2016-09-29 | A kind of surface temperature control system of ultrasonic probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610867344.1A CN106249777A (en) | 2016-09-29 | 2016-09-29 | A kind of surface temperature control system of ultrasonic probe |
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| CN106249777A true CN106249777A (en) | 2016-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610867344.1A Pending CN106249777A (en) | 2016-09-29 | 2016-09-29 | A kind of surface temperature control system of ultrasonic probe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107007298A (en) * | 2017-04-07 | 2017-08-04 | 白明 | Multi-functional Type B ultrasonic probe |
| CN110267368A (en) * | 2019-07-02 | 2019-09-20 | 吉林大学 | A kind of ultrasonic probe pre-heating mean |
| CN112033602A (en) * | 2020-09-24 | 2020-12-04 | 罗治军 | High-strength bolt ultrasonic axial force coefficient field calibration system |
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| CN201414812Y (en) * | 2009-05-27 | 2010-03-03 | 华冰 | Medical ultrasonic B probe constant temperature heating equipment |
| JP2011083365A (en) * | 2009-10-14 | 2011-04-28 | Ge Medical Systems Global Technology Co Llc | Bottle holder for ultrasound diagnostic device and ultrasound diagnostic device |
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| CN107007298A (en) * | 2017-04-07 | 2017-08-04 | 白明 | Multi-functional Type B ultrasonic probe |
| CN110267368A (en) * | 2019-07-02 | 2019-09-20 | 吉林大学 | A kind of ultrasonic probe pre-heating mean |
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| CN112033602A (en) * | 2020-09-24 | 2020-12-04 | 罗治军 | High-strength bolt ultrasonic axial force coefficient field calibration system |
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