CN208017935U - A kind of temperature feedback detecting system based on lung tumors disease microwave probe - Google Patents
A kind of temperature feedback detecting system based on lung tumors disease microwave probe Download PDFInfo
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- CN208017935U CN208017935U CN201820742839.6U CN201820742839U CN208017935U CN 208017935 U CN208017935 U CN 208017935U CN 201820742839 U CN201820742839 U CN 201820742839U CN 208017935 U CN208017935 U CN 208017935U
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Abstract
The utility model discloses a kind of temperature feedback detecting systems based on lung tumors disease microwave probe; including power microwave emitter; power microwave emitter connects rf probe by feeder line; rf probe is the metal needle with insulating layer; uniform winding has pt thermometric silks on rf probe; the temperature measurement signal output end of pt thermometric silks is connected with temperature detection processing module, and one layer of insulating protective sleeve is coated on the outside of the rf probe for being wound with pt thermometric silks；Temperature detection processing module is made of voltage clamping and high-frequency filter circuit, accurate amplification and low-frequency filter circuit, CPU acquisition process circuits, the temperature measurement signal output end of pt thermometric silks is connected with the signal input part of voltage clamping and high-frequency filter circuit, and voltage clamping and high-frequency filter circuit, accurate amplification and low-frequency filter circuit, CPU acquisition process circuits are sequentially connected.The utility model solves the operational risk in the presence of traditional treatment by adding temperature feedback detection to rf probe.
Description
Technical field
The utility model belongs to Medical Devices detection technique field, particularly relates to a kind of micro- based on lung tumors disease
The temperature feedback detecting system of wave probe.
Background technology
In the prior art, the therapy of lung tumors disease is controlled using the rf probe that can send out microwave energy
It treats, lung tumors microwave therapy cardinal principle is：Generating the frequency with certain power density from power microwave emitter is
The microwave transmission to impedance is on 75 ohm of rf probe by the microwave of 2450 ± 50MHz by feeder line, and rf probe adds
Hot lung tumors diseased region keeps diseased region downright bad.Traditional mode of heating is to make the process of lung tumors lesion necrosis：
When probe is inserted into lung tumors, a microwave part for radiation can be absorbed by tumour and generating heat causes neoplastic disease to degenerate
Extremely, another part can be reflected back toward power microwave emitter as standing wave by feeder line.From theory analysis, lung tumors are micro-
Generated amount of heat has much relations with its dielectric property in wave field.Come to power often through empirical value in traditional treatment
The power of microwave launcher is controlled, and such operational risk is：Once temperature is excessively high, health tissues can be generated and be burnt
Wound, temperature is too low to be not achieved therapeutic effect.
Invention content
The utility model makes up the deficiencies in the prior art aiming at the above problem, provides a kind of based on lung tumors disease
The temperature feedback detecting system of sick microwave probe；The utility model solves above-mentioned existing " operational risk：Once temperature
It is excessively high, health tissues can be generated and be burnt, temperature is too low to be not achieved therapeutic effect " the problem of.
To achieve the above object, the utility model adopts the following technical solution.
A kind of temperature feedback detecting system based on lung tumors disease microwave probe of the utility model, including power microwave
Emitter, power microwave emitter connect rf probe by feeder line, and rf probe is the metal needle with insulating layer,
It is characterized in that：Uniform winding has pt thermometric silks, the temperature measurement signal output end of pt thermometric silks to be connected on the rf probe
Temperature detection processing module is coated with one layer of insulating protective sleeve in described being wound on the outside of the rf probe of pt thermometric silks；Institute
The temperature detection processing module stated is by voltage clamping and high-frequency filter circuit, accurate amplification and low-frequency filter circuit, CPU acquisitions
It manages circuit to constitute, temperature measurement signal output end and voltage clamping and the signal input part of high-frequency filter circuit of the pt thermometric silks
It is connected, the voltage clamping and high-frequency filter circuit, accurate amplification and low-frequency filter circuit, CPU acquisition process circuit are successively
It is connected；The voltage clamping and high-frequency filter circuit, accurate amplification and low-frequency filter circuit, CPU acquisition process circuits difference
It is connected with electric supply system, is amplified to voltage clamping and high-frequency filter circuit, precision by the electric supply system and low
Frequency filter circuit, CPU acquisition process circuit provide corresponding required voltage respectively.
As a kind of preferred embodiment of the utility model, the pt thermometric silks are using 1/3DIN grades of Pt1000 platinum filament electricity
Resistance.
As another preferred embodiment of the utility model, the voltage clamping and high-frequency filter circuit include high frequency magnetic
Pearl S1, high frequency magnetic bead S2, capacitance C6, capacitance C7, capacitance C8, inductance L1, diode D2, diode D3, high frequency magnetic bead S1, high frequency
One end of magnetic bead S2 is connected with pt thermometric silks P1；The other end of high frequency magnetic bead S1 is separately connected one end of capacitance C6, inductance L1
The other end of one end, inductance L1 is separately connected one end of capacitance C7, one end of capacitance C8, the anode of diode D2, diode D3
Cathode；The other end of high frequency magnetic bead S2 connects the other end of capacitance C6, the other end of capacitance C7, the other end of capacitance C8, two
The anode of pole pipe D3；Capacitance C6, inductance L1, capacitance C7, capacitance C8 constitute a π type filter circuit, diode D2, diode D3
Constitute clamp circuit, the ends output signal Vo and precision amplification and low-frequency filter circuit phase of voltage clamping and high-frequency filter circuit
Even.
As another preferred embodiment of the utility model, the diode D2, diode D3 are all made of model
The diode of 1N4148.
As another preferred embodiment of the utility model, the CPU acquisition process circuits include CPU main control chips U5
And its peripheral circuit, peripheral circuit include the oscillating circuit and reset circuit that dominant frequency is provided for CPU main control chips U5；Described
CPU main control chips U5 uses STM32F103VCT6 chips, 12,13 pins of CPU main control chips U5 to be connected as CPU main control chips
U1 provides the oscillating circuit of dominant frequency, this oscillating circuit is by starting of oscillation capacitance C11, starting of oscillation capacitance C12, resistance R2,12MHZ without source crystal oscillator
X1 is constituted, and 12,13 pins of CPU main control chips U5 are separately connected both ends of the 12MHZ without source crystal oscillator X1, and 12MHZ is without source crystal oscillator X1
With resistance R2 and connect, the both ends of resistance R2 are separately connected one end of starting of oscillation capacitance C11, starting of oscillation capacitance C12, starting of oscillation capacitance C11, rise
The other end of capacitance C12 of shaking connects GND jointly；14 pins of CPU main control chips U5 are connected with reset circuit, this reset circuit by
R3, C13 are constituted.
As another preferred embodiment of the utility model, the accurate amplification and low-frequency filter circuit include thermometric electricity
Hinder RB1, temperature detecting resistance RB2, temperature detecting resistance RB3, filter capacitor C9, amplifier, resistance Rg, resistance R1, capacitance C10, thermometric electricity
It hinders RB1, temperature detecting resistance RB2, temperature detecting resistance RB3, filter capacitor C9 and constitutes an electric bridge, Pt1000 is measured in a manner of bridge measurement
The variable quantity of platinum wire resistance；2 pins of lead-out wire connection amplifier, electricity between temperature detecting resistance RB1, the temperature detecting resistance RB2 of electric bridge
Lead-out wire connects 3 pins of amplifier between temperature detecting resistance RB3, the filter capacitor C9 of bridge, connects between 1 and 8 pins of amplifier
Connecting resistance Rg, 6 pins of amplifier are by resistance R1 connection capacitance C10, and 6 pin output ends of amplifier are through resistance R1, capacitance
The 23 pin ADC interfaces of CPU main control chips U5 are connected to after C10 filtering.
As another preferred embodiment of the utility model, the amplifier is amplified using the AD620 instrument of U.S. TI
Device.
As another preferred embodiment of the utility model, the electric supply system is steady by transformer rectifier circuit and three
Press filtration wave circuit forms, and transformer rectifier circuit is made of dry-type transformer T1, rectifier bridge D1, and the primary side of dry-type transformer T1 connects
Enter alternating current 220V, the primary side of dry-type transformer T1 connects rectifier bridge D1, and the both ends of rectifier bridge D1 are connected separately with decoupling filter
Wave capacitance C1, C2, the ends output voltage V- are separately connected three voltage stabilizings after the ends output voltage V+ and rectification after the rectification of rectifier bridge D1
Filter circuit；First filter circuit of pressure-stabilizing of three filter circuit of pressure-stabilizing is by three-terminal voltage-stabilizing integrated package U1 and filter capacitor C3 phases
It even constitutes, second filter circuit of pressure-stabilizing, which is connected by three-terminal voltage-stabilizing integrated package U2 with filter capacitor C4, to be constituted, third voltage stabilizing filter
Wave circuit, which is connected by three-terminal voltage-stabilizing integrated package U3 with filter capacitor C5, to be constituted, the electric quantity output end difference of three filter circuit of pressure-stabilizing
Connect voltage clamping and high-frequency filter circuit, accurate amplification and low-frequency filter circuit, CPU acquisition process circuits；Rectifier bridge D1's
The ends output voltage V+ are connected with first filter circuit of pressure-stabilizing, third filter circuit of pressure-stabilizing respectively after rectification, rectifier bridge D1's
The ends output voltage V- are connected with second filter circuit of pressure-stabilizing after rectification.
As another preferred embodiment of the utility model, the rectifier bridge D1 uses the rectifier bridge of model 2W10,
What the three-terminal voltage-stabilizing integrated package U1, three-terminal voltage-stabilizing integrated package U2, three-terminal voltage-stabilizing integrated package U3 were respectively adopted be L7805,
L7905、AMS1117-3.3。
The beneficial effects of the utility model.
A kind of temperature feedback detecting system based on lung tumors disease microwave probe provided by the utility model, passes through
Temperature feedback detection is added to rf probe, solves the operational risk in the presence of traditional treatment；Since rf probe is elongated
Special structure, and the strong electromagnetic that generates when work, the temperature feedback detecting system of the utility model use pt thermometrics
Silk be temperature element of the PT1000 platinum wire resistances as rf probe, and with the temperature measurement signal output end of PT1000 platinum wire resistances
It is connected with temperature detection processing module, temperature change is detected by set temperature detection processing module, is realized dynamic
Microwave power closed-loop control, to reach the stable suitable temperature of rf probe output.
Description of the drawings
The technical issues of in order to keep the utility model solved, technical solution and advantageous effect are more clearly understood, below
In conjunction with the drawings and the specific embodiments, the present invention will be further described in detail.It should be appreciated that tool described herein
Body embodiment is only used to explain the utility model, is not used to limit the utility model.
Fig. 1 is a kind of whole knot of temperature feedback detecting system based on lung tumors disease microwave probe of the utility model
Structure schematic block diagram.
Fig. 2 is a kind of change repoussage of the temperature feedback detecting system based on lung tumors disease microwave probe of the utility model
The circuit diagram of current circuit.
Fig. 3 is first of a kind of temperature feedback detecting system based on lung tumors disease microwave probe of the utility model
The circuit diagram of filter circuit of pressure-stabilizing.
Fig. 4 is second of a kind of temperature feedback detecting system based on lung tumors disease microwave probe of the utility model
The circuit diagram of filter circuit of pressure-stabilizing.
Fig. 5 is a kind of the utility model third of the temperature feedback detecting system based on lung tumors disease microwave probe
The circuit diagram of filter circuit of pressure-stabilizing.
Fig. 6 is a kind of voltage clamp of the temperature feedback detecting system based on lung tumors disease microwave probe of the utility model
The circuit diagram of position and high-frequency filter circuit.
Fig. 7 is that a kind of precision of the temperature feedback detecting system based on lung tumors disease microwave probe of the utility model is put
Big and low-frequency filter circuit circuit diagram.
Fig. 8 is that a kind of CPU of the temperature feedback detecting system based on lung tumors disease microwave probe of the utility model is adopted
Collect the circuit diagram of processing circuit.
Fig. 9 is the structural schematic diagram of the rf probe of the utility model winding pt thermometric silks.
Label in Fig. 9：1 it is insulating protective sleeve, 2 be rf probe, 3 is pt thermometric silks.
Specific implementation mode
In conjunction with shown in attached drawing 1 and 9, a kind of temperature feedback detection based on lung tumors disease microwave probe of the utility model
System, including power microwave emitter, power microwave emitter by feeder line connect rf probe, rf probe be with
The metal needle of insulating layer, it is characterised in that：Uniform winding has pt thermometric silks, the thermometric of pt thermometric silks on the rf probe
Signal output end is connected with temperature detection processing module, and one is coated in described being wound on the outside of the rf probe of pt thermometric silks
Layer insulating protective sleeve；The temperature detection processing module is filtered by voltage clamping and high-frequency filter circuit, accurate amplification and low frequency
Wave circuit, CPU acquisition process circuits are constituted, temperature measurement signal output end and voltage clamping and the High frequency filter of the pt thermometric silks
The signal input part of circuit is connected, the voltage clamping and high-frequency filter circuit, accurate amplification and low-frequency filter circuit, CPU
Acquisition process circuit is sequentially connected；The voltage clamping and high-frequency filter circuit, accurate amplification and low-frequency filter circuit, CPU
Acquisition process circuit is connected with electric supply system respectively, by the electric supply system to voltage clamping and High frequency filter electricity
Road, accurate amplification and low-frequency filter circuit, CPU acquisition process circuit provide corresponding required voltage respectively.
The pt thermometric silks use 1/3DIN grades of Pt1000 platinum wire resistances.
As shown in fig. 6, the voltage clamping and high-frequency filter circuit includes high frequency magnetic bead S1, high frequency magnetic bead S2, capacitance
C6, capacitance C7, capacitance C8, inductance L1, diode D2, diode D3, high frequency magnetic bead S1, one end of high frequency magnetic bead S2 and pt thermometrics
Silk P1 is connected；The other end of high frequency magnetic bead S1 be separately connected one end of capacitance C6, inductance L1 one end, the other end of inductance L1 point
Not Lian Jie one end of capacitance C7, one end of capacitance C8, the anode of diode D2, diode D3 cathode；High frequency magnetic bead S2's is another
One end connects the anode of the other end of capacitance C6, the other end of capacitance C7, the other end of capacitance C8, diode D3；Capacitance C6, electricity
Feel L1, capacitance C7, capacitance C8 and constitute a π type filter circuit, diode D2, diode D3 constitute clamp circuit, voltage clamping
And the ends output signal Vo of high-frequency filter circuit are connected with precision amplification and low-frequency filter circuit.
Diode D2, the diode D3 is all made of the diode of model 1N4148.
Wherein, the elimination that act as of the high frequency magnetic bead S1, high frequency magnetic bead S2 are present in RF noises in transmission line structure,
RF energy is the AC sine wave component being superimposed upon on direct current transmission level, and flip-flop is needed useful signal.It eliminates
These unwanted signal energy.Due to the very high frequency 2.4-2.5GHz of rf probe, and there are extremely strong power, temperature element
Meeting couples high frequency microwave signal, so in order to detect the accurate influence for needing greatly to cut down high frequency band；On temperature element
The microwave signal root-mean-square value of induction is 0, so couples high frequency noise signal almost can disappear by low-pass filter
It removes.Diode D2, diode D3 constitute clamp circuit, are all made of 1N4148, mainly utilize its forward voltage and high frequency characteristics,
Forward voltage is about 0.7V, this allows for voltage clamping and the output signal Vo voltages of high-frequency filter circuit are not less than -0.7V
And it is not above+5.7V, there is great protection to subsequent amplifying circuit.
The circuit diagram of CPU acquisition process circuits as shown in Figure 8, the CPU acquisition process circuits include CPU master control cores
Piece U5 and its peripheral circuit, peripheral circuit include the oscillating circuit and reset circuit that dominant frequency is provided for CPU main control chips U5；It is described
CPU main control chips U5 use STM32F103VCT6 chips, 12,13 pins of CPU main control chips U5 are connected as CPU master control cores
Piece U1 provides the oscillating circuit of dominant frequency, this oscillating circuit is by starting of oscillation capacitance C11, starting of oscillation capacitance C12, the passive crystalline substance of resistance R2,12MHZ
The X1 that shakes is constituted, and 12,13 pins of CPU main control chips U5 are separately connected both ends of the 12MHZ without source crystal oscillator X1, and 12MHZ is without source crystal oscillator
X1 and resistance R2 simultaneously connects, and the both ends of resistance R2 are separately connected one end of starting of oscillation capacitance C11, starting of oscillation capacitance C12, starting of oscillation capacitance C11,
The other end of starting of oscillation capacitance C12 connects GND jointly；14 pins of CPU main control chips U5 are connected with reset circuit, this reset circuit
It is made of R3, C13.The STM32F103VCT6 chips, dominant frequency are up to 72MHz, 256KB program's memory spaces, 48KB
It is logical to have used its USART in the utility model for RAM, the affluent resources such as 16 Channel 12-Bit analog-digital converters, I2C, SPI, USART
Believe interface and GPIO interface.
In Fig. 8, the resistance R4 that 94 pins are connected is that internal processes start selection, and when BOOT0 is pulled low, CPU is powered on
When from internal FLASH start；D4 is TL431, is a 2.495V controllable accurate source of stable pressure, can be equivalent to a reversed voltage stabilizing
Diode, Voltage Reference error are not higher than 4 ‰, and dynamic output impedance is less than 0.22 Europe.In fig. 8, D4 is that TL431 and R5 matches
One 2.5V reference voltage 2.5V_REF of output is closed, the ADC for CPU acquires reference voltage.
As shown in fig. 7, the accurate amplification and low-frequency filter circuit include temperature detecting resistance RB1, temperature detecting resistance RB2, survey
Warm resistance RB3, filter capacitor C9, amplifier, regulation resistance Rg, resistance R1, capacitance C10, temperature detecting resistance RB1, temperature detecting resistance
RB2, temperature detecting resistance RB3, filter capacitor C9 constitute an electric bridge, and the variation of Pt1000 platinum wire resistances is measured in a manner of bridge measurement
Amount；2 pins of lead-out wire connection amplifier, the temperature detecting resistance of electric bridge between temperature detecting resistance RB1, the temperature detecting resistance RB2 of electric bridge
Lead-out wire connects 3 pins of amplifier between RB3, filter capacitor C9, and regulation resistance Rg is connected between 1 and 8 pins of amplifier,
6 pins of amplifier are by resistance R1 connection capacitance C10, and 6 pin output ends of amplifier are after resistance R1, capacitance C10 filtering
It is connected to the 23 pin ADC interfaces of CPU main control chips U5.
The variable quantity that Pt1000 platinum wire resistances are measured in a manner of bridge measurement, relative to single electric resistance partial pressure measurement method range
It is wider, measurement accuracy higher；Wherein, filter capacitor C9 so that scope range of the fluctuation of voltage smaller.
The amplifier uses the AD620 instrument amplifiers of U.S. TI；It has the offset voltage no more than 50uV, pole
The earth ensure that amplification precision；Its amplification factor is only controlled by a regulation resistance Rg.
In conjunction with shown in attached drawing 2,3,4,5, the electric supply system is by transformer rectifier circuit and three filter circuit of pressure-stabilizing
Composition, transformer rectifier circuit are made of dry-type transformer T1, rectifier bridge D1, the primary side incoming transport electricity of dry-type transformer T1
The primary side of 220V, dry-type transformer T1 connects rectifier bridge D1, the both ends of rectifier bridge D1 be connected separately with decoupling filter capacitor C1,
C2, the ends output voltage V- are separately connected three filter circuit of pressure-stabilizing after the ends output voltage V+ and rectification after the rectification of rectifier bridge D1；
First filter circuit of pressure-stabilizing of three filter circuit of pressure-stabilizing, which is connected by three-terminal voltage-stabilizing integrated package U1 with filter capacitor C3, to be constituted, the
Two filter circuit of pressure-stabilizing, which are connected by three-terminal voltage-stabilizing integrated package U2 with filter capacitor C4, to be constituted, and third filter circuit of pressure-stabilizing is by three
End integrated package of pressure-stabilizing U3 is connected composition with filter capacitor C5, and the electric quantity output end of three filter circuit of pressure-stabilizing is separately connected voltage clamp
Position and high-frequency filter circuit, accurate amplification and low-frequency filter circuit, CPU acquisition process circuits；It is exported after the rectification of rectifier bridge D1
The ends voltage V+ are connected with first filter circuit of pressure-stabilizing, third filter circuit of pressure-stabilizing respectively, are exported after the rectification of rectifier bridge D1
The ends voltage V- are connected with second filter circuit of pressure-stabilizing.The ends V+ obtain 5V constant voltage dc sources after three-terminal voltage-stabilizing integrated package U1,
To give voltage clamping and high-frequency filter circuit to power；The ends V+ obtain 3.3V constant voltage dc sources after three sections of regulator block U3, use
To give CPU acquisition process circuits to power；The ends V- obtain -5V constant voltage dc sources after three-terminal regulator block U2, to be put to precision
The power supply of big and low-frequency filter circuit.
The rectifier bridge D1 uses the rectifier bridge of model 2W10, the three-terminal voltage-stabilizing integrated package U1, three-terminal voltage-stabilizing
That integrated package U2, three-terminal voltage-stabilizing integrated package U3 are respectively adopted is L7805, L7905, AMS1117-3.3.
Power input is 220V 50Hz alternating currents, and 6V 50Hz alternating currents, rectifier bridge D1 are depressurized to through dry-type transformer T1
For rectifier bridge 2W10, highest pressure 1000V maximum average currents are 2A.Within each work period of rectifier bridge, with for the moment
Between only work there are two diode, by the one-way conduction function of diode, alternating current is converted into unidirectional direct current arteries and veins
Dynamic voltage obtains V+ and V- after the filtering of decoupling filter capacitor C1, C2 decoupling, and output voltage is when unloaded：Uout≈
1.414*U=1.414*6≈8.5V.Output voltage when wherein Uout is unloaded after rectification, U is the alternating voltage being rectified, institute
It is about+8.5V to obtain V+ after rectification, V- is about -8.5V.It is straight that V+ obtains 5V voltage stabilizings after three-terminal voltage-stabilizing integrated package U1 L7805
Galvanic electricity source；V- obtains -5V constant voltage dc sources after three-terminal voltage-stabilizing integrated package U2 L790；V+ is through three-terminal voltage-stabilizing integrated package U3
3.3V constant voltage dc sources are obtained after AMS1117-3.3.Filter capacitor C3, C4, C5 so that power supply is more steady, and system works more
Add stabilization.
AC power input is 220V, by the double 6V AC powers of dry-type transformer T1 outputs, through transformer rectifier circuit, surely
± 5V and 3.3V are obtained after the rectifying and voltage-stabilizing filtering of press filtration wave circuit to work for system.Pt thermometric silks use 1/3DIN grades of Pt1000
Platinum wire resistance, when the temperature is changed its resistance value also change, after voltage clamping and High frequency filter, into amplifier by signal
Amplification carries out data acquisition for CPU.
In the temperature feedback detecting system of the utility model, rf probe is inserted into lung tumors in advance, by being heated
The dipole molecule high-frequency reciprocating movement of internal portion, generates " interior frictional heat " and lung tumors temperature is made to increase, be not necessary to any heat transfer
Process can make lung tumors inside and outside while heat while heat up, and heating speed is fast and uniform, it is only necessary to traditional heating mode
Energy consumption part or tens/once can reach heating purpose.
It is understood that above with respect to the specific descriptions of the utility model, it is merely to illustrate the utility model and is not
It is limited to technical solution described in the utility model embodiment, it will be understood by those of ordinary skill in the art that, it still can be with
It modifies to the utility model or equivalent replacement, to reach identical technique effect；Needs are used as long as meeting, all in this reality
Within novel protection domain.
Claims (9)
1. a kind of temperature feedback detecting system based on lung tumors disease microwave probe, including power microwave emitter, work(
Rate microwave launcher connects rf probe by feeder line, and rf probe is the metal needle with insulating layer, it is characterised in that：?
Uniform winding has pt thermometric silks, the temperature measurement signal output end of pt thermometric silks to be connected with temperature detection processing on the rf probe
Module is coated with one layer of insulating protective sleeve in described being wound on the outside of the rf probe of pt thermometric silks；The temperature detection
Processing module is made of voltage clamping and high-frequency filter circuit, accurate amplification and low-frequency filter circuit, CPU acquisition process circuits,
The temperature measurement signal output end of the pt thermometric silks is connected with the signal input part of voltage clamping and high-frequency filter circuit, described
Voltage clamping and high-frequency filter circuit, accurate amplification and low-frequency filter circuit, CPU acquisition process circuits are sequentially connected；Described
Voltage clamping and high-frequency filter circuit, accurate amplification and low-frequency filter circuit, CPU acquisition process circuit respectively with power supply power supply system
System is connected, by the electric supply system to voltage clamping and high-frequency filter circuit, accurate amplification and low-frequency filter circuit,
CPU acquisition process circuit provides corresponding required voltage respectively.
2. a kind of temperature feedback detecting system based on lung tumors disease microwave probe according to claim 1, special
Sign is：The pt thermometric silks use 1/3DIN grades of Pt1000 platinum wire resistances.
3. a kind of temperature feedback detecting system based on lung tumors disease microwave probe according to claim 1, special
Sign is：The voltage clamping and high-frequency filter circuit includes high frequency magnetic bead S1, high frequency magnetic bead S2, capacitance C6, capacitance C7, electricity
Hold C8, inductance L1, diode D2, diode D3, high frequency magnetic bead S1, high frequency magnetic bead S2 one end be connected with pt thermometric silks P1；It is high
The other end of frequency magnetic bead S1 be separately connected one end of capacitance C6, inductance L1 one end, the other end of inductance L1 is separately connected capacitance
One end of C7, one end of capacitance C8, the anode of diode D2, diode D3 cathode；The other end connection electricity of high frequency magnetic bead S2
Hold the anode of the other end of C6, the other end of capacitance C7, the other end of capacitance C8, diode D3；Capacitance C6, inductance L1, capacitance
C7, capacitance C8 constitute a π type filter circuit, and diode D2, diode D3 constitute clamp circuit, voltage clamping and High frequency filter
The ends output signal Vo of circuit are connected with precision amplification and low-frequency filter circuit.
4. a kind of temperature feedback detecting system based on lung tumors disease microwave probe according to claim 3, special
Sign is：Diode D2, the diode D3 is all made of the diode of model 1N4148.
5. a kind of temperature feedback detecting system based on lung tumors disease microwave probe according to claim 1, special
Sign is：The CPU acquisition process circuits include CPU main control chips U5 and its peripheral circuit, and peripheral circuit includes for CPU master
Control oscillating circuit and reset circuit that chip U5 provides dominant frequency；The CPU main control chips U5 uses STM32F103VCT6 cores
Piece, 12,13 pins of CPU main control chips U5 are connected as the oscillating circuit that CPU main control chips U1 provides dominant frequency, this oscillating circuit by
Starting of oscillation capacitance C11, starting of oscillation capacitance C12, resistance R2,12MHZ are constituted without source crystal oscillator X1,12,13 pins point of CPU main control chips U5
Not Lian Jie both ends of the 12MHZ without source crystal oscillator X1,12MHZ is without source crystal oscillator X1 and resistance R2 and connects, and the both ends of resistance R2 are separately connected
One end of starting of oscillation capacitance C11, starting of oscillation capacitance C12, starting of oscillation capacitance C11, starting of oscillation capacitance C12 the other end connect GND jointly；CPU
14 pins of main control chip U5 are connected with reset circuit, this reset circuit is made of R3, C13.
6. a kind of temperature feedback detecting system based on lung tumors disease microwave probe according to claim 1, special
Sign is：The accurate amplification and low-frequency filter circuit include temperature detecting resistance RB1, temperature detecting resistance RB2, temperature detecting resistance RB3, filter
Wave capacitance C9, amplifier, resistance Rg, resistance R1, capacitance C10, temperature detecting resistance RB1, temperature detecting resistance RB2, temperature detecting resistance RB3, filter
Wave capacitance C9 constitutes an electric bridge, and the variable quantity of Pt1000 platinum wire resistances is measured in a manner of bridge measurement；The temperature detecting resistance of electric bridge
2 pins of lead-out wire connection amplifier, draw between temperature detecting resistance RB3, the filter capacitor C9 of electric bridge between RB1, temperature detecting resistance RB2
Outlet connects 3 pins of amplifier, connects resistance Rg between 1 and 8 pins of amplifier, 6 pins of amplifier pass through resistance R1
Capacitance C10 is connected, 6 pin output ends of amplifier are connected to the 23 of CPU main control chips U5 after resistance R1, capacitance C10 filtering
Pin ADC interface.
7. a kind of temperature feedback detecting system based on lung tumors disease microwave probe according to claim 6, special
Sign is：The amplifier uses the AD620 instrument amplifiers of U.S. TI.
8. a kind of temperature feedback detecting system based on lung tumors disease microwave probe according to claim 1, special
Sign is：The electric supply system is made of transformer rectifier circuit and three filter circuit of pressure-stabilizing, and transformer rectifier circuit is by doing
Formula transformer T1, rectifier bridge D1 are constituted, the primary side incoming transport electricity 220V of dry-type transformer T1, the secondary of dry-type transformer T1
Side connects rectifier bridge D1, and the both ends of rectifier bridge D1 are connected separately with decoupling filter capacitor C1, C2, are exported after the rectification of rectifier bridge D1
The ends output voltage V- are separately connected three filter circuit of pressure-stabilizing behind the ends voltage V+ and rectification；The first of three filter circuit of pressure-stabilizing
A filter circuit of pressure-stabilizing, which is connected by three-terminal voltage-stabilizing integrated package U1 with filter capacitor C3, to be constituted, and second filter circuit of pressure-stabilizing is by three ends
Integrated package of pressure-stabilizing U2 is connected composition with filter capacitor C4, and third filter circuit of pressure-stabilizing is by three-terminal voltage-stabilizing integrated package U3 and filtered electrical
Hold the connected compositions of C5, the electric quantity output end of three filter circuit of pressure-stabilizing is separately connected voltage clamping and high-frequency filter circuit, precision
Amplification and low-frequency filter circuit, CPU acquisition process circuits；After the rectification of rectifier bridge D1 the ends output voltage V+ respectively with first
Filter circuit of pressure-stabilizing, third filter circuit of pressure-stabilizing are connected, the ends output voltage V- and second voltage stabilizing after the rectification of rectifier bridge D1
Filter circuit is connected.
9. a kind of temperature feedback detecting system based on lung tumors disease microwave probe according to claim 8, special
Sign is：The rectifier bridge D1 uses the rectifier bridge of model 2W10, the three-terminal voltage-stabilizing integrated package U1, three-terminal voltage-stabilizing collection
That blocking U2, three-terminal voltage-stabilizing integrated package U3 are respectively adopted is L7805, L7905, AMS1117-3.3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820742839.6U CN208017935U (en) | 2018-05-18 | 2018-05-18 | A kind of temperature feedback detecting system based on lung tumors disease microwave probe |
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| CN201820742839.6U CN208017935U (en) | 2018-05-18 | 2018-05-18 | A kind of temperature feedback detecting system based on lung tumors disease microwave probe |
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| CN111408045A (en) * | 2020-04-02 | 2020-07-14 | 河北普尼医疗科技有限公司 | Intermediate frequency alternating electric field treatment device for deep tumor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111408045A (en) * | 2020-04-02 | 2020-07-14 | 河北普尼医疗科技有限公司 | Intermediate frequency alternating electric field treatment device for deep tumor |
| CN111408045B (en) * | 2020-04-02 | 2023-04-28 | 河北普尼医疗科技有限公司 | Intermediate frequency alternating electric field treatment device for deep tumor |
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