CN2529654Y - Electrically controlled lightweight field transfusion system - Google Patents

Abstract

The utility model relates to a medical transfusion apparatus for adapting the field operations, which consists of a transfusion bottle, a photoelectric dropping rate sensor, a transfusion rate detecting and signal processing circuit, an inflation pump and a speed-regulation and inflation control circuit. The inflation pump for boosting the transfusion bottle is communicated with the transfusion bottle through an inflation catheter; and the control signal of the inflation pump is connected with the output of the speed-regulation and inflation control circuit; moreover, the photoelectric dropping rate sensor is sleeved on the Murphy burette of the transfusion apparatus, and the output end of the dropping rate signal is connected with the input of the transfusion rate detecting and signal processing circuit. The utility model, being small and practical, has advantages of convenient carrying and simple operation as well as freely adjustable transfusion rate and canceling the transfusion bracket, and realizes the aim of convenient and reliable. Moreover, with extensive application range, the utility model is extensively applicable to the stretcher at field or in moving, or the ambulance as well as the vein transfusion for assembly patients; and in terms of the in-patient, transfusion apparatus can avoid long-time lying or sitting for the patient, thereby releasing the nursing burden.

Description

Automatically controlled light field operations transfusion device

Technical field

This utility model relates to a kind of medical Transfusion device, and is particularly a kind of for adapting to the medical Transfusion device of field operations needs.

Background technology

Venous transfusion is a drug treatment technology very general in the medical treatment, generally for guaranteeing normally carrying out of transfusion, must raise infusion bottle with drip stand when transfusion, be pressed with certain pressure differential with the vein that keeps transfusion and be subjected to liquid the person, just there is inconvenience in this.Particularly in the open air, on the operating stretcher or on the ambulance and during cluster patient's field first aid, the venous transfusion technology often is restricted, even the inpatient, owing to need infusion support, the requirement patient lies in bed for a long time or sits quietly, thereby has certain difficulty in nursing.

Summary of the invention

The purpose of this utility model is exactly in order to address the above problem, and a kind of infusion support that need not is provided, and is easy to carry automatically controlled light field operations transfusion device easy for operation, applied widely.

Technical solution of the present utility model:

A kind of automatically controlled light field operations transfusion device, it is characterized in that it drips speed sensors, transfusion speed detection and signal processing circuit, inflator pump and speed governing ventilating control circuit thereof by infusion bottle, photoelectricity and form, be used for being communicated with infusion bottle by inflating catheter to the inflator pump of infusion bottle pressurization, the control signal of inflator pump links to each other with the output of speed governing ventilating control circuit, photoelectricity drips speed sensors and is sleeved on the horse Fei Shi dropper of transfusion device, and its fast signal output part connects the input of transfusion speed detection and signal processing circuit.

This utility model is a kind of automatically controlled portable field operations transfusion device, it is by power supply and alarm sound circuit, speed governing ventilating control circuit, inflator pump, drip speed sensors, compositions such as transfusion speed detection and signal processing circuit, be used for being communicated with infusion bottle by airway to the micropump of inflating in the infusion bottle, the aeration speed of miniature inflator pump is controlled by the console switch of panel, transfusion speed can be regulated arbitrarily, and it is too fast in a speed, cross low or infuse and finish, send warning during the internal cell brownout, drip speed sensors and be enclosed within the horse Fei Shi dropper outside of transfusion device, be connected with signal processing circuit with the transfusion speed detection, its output signal connects audible alarm circuit, power circuit includes the 8V rechargeable battery, and the assurance alternating current-direct current all can be worked.The utlity model has following advantage:

1, design is particular about rationally.Turn to basic mentality of designing with small-sized,, be easy to carry, saved infusion support, reach convenient, reliable purpose to guarantee the small and exquisite practicality of complete machine.

2, applied widely.Can be widely used on field, the operating stretcher or on the ambulance and the venous transfusion during cluster patient first aid,, use this utility model transfusion device, can exempt the long-time minister bed of patient or sit quietly, alleviate the nursing burden for the inpatient.

3, can AC/DC, adapt to different use occasions.

4, simple to operate.But the transfusion speed free adjustment, and indicate by the LED light beam.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is a speed governing ventilating control circuit electrical schematic diagram of the present utility model.

Fig. 3 is that transfusion speed of the present utility model detects and the signal processing circuit electrical schematic diagram.

Fig. 4 is power supply of the present utility model and alarm sound circuit electrical schematic diagram.

The specific embodiment

As Fig. 1, this utility model drips speed sensors 8, transfusion speed detection and signal processing circuit 9, inflator pump 3 and speed governing ventilating control circuit 2 thereof by infusion bottle 6, photoelectricity to be formed, be used for being communicated with infusion bottle 6 by inflating catheter 4 to the inflator pump 3 of infusion bottle 6 pressurizations, the control signal of inflator pump 3 links to each other with the output of speed governing ventilating control circuit 2, photoelectricity drips speed sensors 8 and is sleeved on the horse Fei Shi dropper 7 of transfusion device 6, and its fast signal output part connects the input of transfusion speed detection and signal processing circuit 9.Transfusion speed detects and can link to each other with power supply and alarm sound circuit 1 with the output of signal processing circuit 9, make that dripping fast signal delivers to power supply and alarm sound circuit 1 again after transfusion speed detection and signal processing circuit 9 are handled, send sound equipment by buzzer 11 during warning.

In this utility model, photoelectricity drips speed sensors 8 by light emitting diode D ₃₀₁With photosensitive receiving tube Q ₃₀₁Constitute (as Fig. 3), its external form is a ring-like body, is sleeved on the horse Fei Shi dropper 7, and its output termination transfusion speed detects and signal processing circuit 9.

Transfusion speed detect with signal processing circuit 9 as shown in Figure 3, it by amplifier, pulse shaper, lose pulse-detecting circuit, the driving gate circuit is formed, wherein, amplifier is by amplifier IC _301-1, IC _301-2And peripheral resistance R ₃₀₃～R ₃₁₁, capacitor C ₃₀₂～C ₃₀₅Constitute; Pulse shaper is by NAND gate IC _302-1, IC _302-2Constitute; Lose pulse-detecting circuit by time-base integrated circuit IC ₃₀₃, IC ₃₀₄(model can be 555), transistor Q ₃₀₂, Q ₃₀₃, capacitor C ₃₀₆, C ₃₀₇, resistance R ₃₁₄, R ₃₁₅And potentiometer VR ₃₀₁, V ₃₀₂Constitute IC ₃₀₃, IC ₃₀₄Peripheral Resistor-Capacitor Unit respectively and separately constitutes the two-way monostable flipflop, and the reset terminal of two monostable flipflops meets transistor Q respectively ₃₀₂, Q ₃₀₃, constitute and lose pulse-detecting circuit; The driving gate circuit is by NAND gate IC _302-3, IC _302-4With nor gate IC _305-1Constitute; The input of amplifier is from amplifier IC _301-1Inverting input draw, pass through resistance R ₃₀₃And capacitor C ₃₀₁Connecing the output that photoelectricity drips speed sensors 8 is photosensitive receiving tube Q ₃₀₁Colelctor electrode, the output of amplifier is from IC _301-2Outfan draw, pass through resistance R respectively ₃₁₂, R ₃₁₃Connect two inputs of pulse shaper, i.e. NAND gate IC _302-1, IC _302-2Input, the output of pulse shaper is from NAND gate IC _302-1, IC _302-2Outfan draw, be transistor Q with two inputs losing pulse-detecting circuit respectively ₃₀₂, Q ₃₀₃Base stage link to each other, two outputs losing pulse shaper from the time basis set become and IC circuit ₃₀₃, IC ₃₀₄Outfan draw, connect two inputs of driving gate circuit respectively, i.e. NAND gate IC _302-3With nor gate IC _305-1Input, the output of driving gate circuit is from NAND gate IC _302-4Outfan draw the output that detects with signal processing circuit 9 as transfusion speed and connect power supply and alarm sound circuit 1.

Power supply and alarm sound circuit 1 as shown in Figure 4, it is made up of DC power supply circuit, sound equipment drive circuit and buzzer 11, wherein, { it is by transformator T by the transformation rectification circuit for DC power supply circuit ₄₀₁, rectifier bridge B ₄₀₁, three ends+8V manostat IC ₄₀₁(model can be LM7808), three ends+5V manostat IC ₄₀₂(model can be LM7805), diode D ₄₀₃, Zener diode D ₄₀₂, LED ₄₀₂, capacitor C ₄₀₂, C ₄₀₃, resistance R ₄₀₅Constitute }, (it is by relay J for ac-dc converter circuit ₄₀₁, transistor Q ₄₀₁, Zener diode D ₄₀₁, resistance R ₄₀₁, R ₄₀₂Formation), (it is by transistor Q for battery charger ₄₀₂, battery BATT, resistance R ₄₀₃, R ₄₀₄, LED ₄₀₁Formation), (it is by NAND gate IC for battery low pressure alarming drive circuit _404-1, resistance R ₄₀₆, R ₄₀₇Constitute) constitute; The sound equipment drive circuit is by nor gate IC _305-2, IC _305-3, NAND gate IC _403-1, IC _403-2, IC _403-3, IC _403-4, resistance R ₄₀₆～R ₄₁₀Constitute, transformation rectification circuit output+5V and+the 8V DC voltage, offer speed governing ventilating control circuit 2 and transfusion speed and detect and signal processing circuit 9, the output of battery low pressure alarming drive circuit is from NAND gate IC _404-1Outfan draw, the input of sound equipment drive circuit is from nor gate IC _305-2Two inputs draw, connect the output of battery low pressure alarming drive circuit and transfusion speed respectively and detect output with signal processing circuit 9, the output of sound equipment drive circuit is from NAND gate IC _403-4Outfan draw, through resistance R ₄₁₀Connect buzzer 11.

Speed governing ventilating control circuit 2 of the present utility model is as Fig. 2, and it is made up of square wave signal generator, key control circuit, shift-register circuit, impedance inverter circuit, speed-regulating signal agitator, and square wave signal generator is by time-base integrated circuit IC ₂₀₃(model can be 555), resistance R ₂₂₂, R ₂₂₃, capacitor C ₂₀₄, C ₂₀₅Constitute; Key control circuit is by transistor Q ₂₀₁～Q ₂₀₄, resistance R ₂₁₈～R ₂₂₁, capacitor C ₂₀₂, C ₂₀₃, button SW ₂₀₁, SW ₂₀₂Constitute; Shift-register circuit is by two bidirectional shift register IC ₂₀₁, IC ₂₀₂(model all can be 74LS194), resistance R ₂₀₀～R ₂₁₆, capacitor C ₂₀₁, diode D ₂₀₁～D ₂₀₈, LED ₂₀₀～LED ₂₀₇Constitute; Impedance inverter circuit is by light Rhizoma Nelumbinis N ₂₀₁(model can be TLP5 12-1), adjustable resistance R ₂₂₄, diode D ₂₀₉Constitute; The speed-regulating signal agitator is by time-base integrated circuit IC ₂₀₄(model can be 555), capacitor C ₂₀₆, C ₂₀₇, C ₂₀₉, C ₂₁₀, resistance R ₂₂₅Constitute, the output of square wave signal generator is from time-base integrated circuit IC ₂₀₃Outfan draw and meet two bidirectional shift register IC in the shift-register circuit ₂₀₁, IC ₂₀₂CP end, the two-way output of key control circuit is by transistor Q ₂₀₁, Q ₂₀₃Colelctor electrode is drawn, and is connected to two bidirectional shift register IC respectively ₂₀₁, IC ₂₀₂State control end M _AAnd M _B, the output of shift-register circuit is from diode D ₂₀₂～D ₂₀₈Negative terminal is drawn, and the input that is connected to impedance inverter circuit is light Rhizoma Nelumbinis N ₂₀₁Input, the output of impedance inverter circuit is by light Rhizoma Nelumbinis N ₂₀₁Outfan draw through resistance R ₂₂₄The instant basis set of input that is connected to the speed-regulating signal agitator becomes IC circuit ₂₀₄Input, the output of speed-regulating signal agitator is by time-base integrated circuit IC ₂₀₄Outfan draw, through resistance R ₂₂₆With transistor Q ₂₀₅Be connected to the inflation motor M in the inflator pump 3 ₂₀₁

Speed governing ventilating control circuit 2 of the present utility model is by the light beam length display speed height of light emitting diode.IC wherein ₂₀₃And R ₂₂₂, R ₂₂₃, C ₂₀₅Constitute astable multivibrator, frequency of oscillation f=1.44/ (R ₂₂₂+ 2R ₂₂₃) C ₅, about about 2Hz, R is passed through in its output ₂₁₇Be connected to by IC ₂₀₁, IC ₂₀₂The shift register circuit of forming is as its shift clock pulse.IC ₂₀₁, IC ₂₀₂Adopt bidirectional shift register 74LS194, the two is concatenated into shift register circuit.After the start promptly by R ₂₀₈, C ₂₀₁Give its zero clearing, IC ₂₀₁, IC ₂₀₂Q ₀～Q ₃Be all low level, circuit is in hold mode, inflation motor M ₂₀₁The rotating speed minimum.By switch SW ₂₀₂The time, IC ₂₀₁, IC ₂₀₂9 foot M _ABe high level, IC ₂₀₁, IC ₂₀₂Become serial and move to right, LED ₂₀₀～LED ₂₀₇Light photo-coupler N successively ₂₀₁The electric current of interior light emitting diodes is ladder and increases, and along with the increase of brightness, the inner photoconductive resistance of photo-coupler reduces gradually, by IC ₂₀₄, R ₂₂₄, photoconductive resistance, C ₂₀₉Frequency of oscillation Deng the speed-regulating signal agitator that constitutes uprises, inflation motor M ₂₀₁Speed up, promptly transfusion speed increases.The recruitment of transfusion speed is by switch SW ₂₀₂Control, if transfusion speed is reduced, but Push switch SW ₂₀₁, IC ₂₀₁, IC ₂₀₂The serial that moves to left reduces transfusion speed gradually.

In transfusion speed detection of the present utility model and the signal processing circuit 9, D ₃₀₁, Q ₃₀₁, R ₃₀₁, R ₃₀₂Constitute photoelectricity and drip speed sensors 8, signal of sensor is through C ₃₀₁, R ₃₀₃Deliver to by IC _301-1, IC _301-2The dual-stage amplifier of forming amplifies, IC _301-2Output lead up to R ₃₁₂Send IC _302-1Shaping, R is passed through on another road ₃₁₃Send IC _302-2Shaping.IC ₃₀₃, Q ₃₀₂And IC ₃₀₄, Q ₃₀₃Constitute two respectively and lose pulse-detecting circuit, promptly respectively the lower limit and the upper limit of transfusion drip speed are reported to the police.Q during normal infusion ₃₀₂Base stage because pulse signal is arranged, and constantly give IC ₃₀₃Reset VR ₃₀₁Setting is the transfusion speed lower limit in the maximum duration of twice reset pulse, if in the given time, do not reset, and IC then ₃₀₃Output low level, gate circuit IC _302-3The output high level, nor gate IC _305-1Output low level, NAND gate IC _302-4The output high level, the audible alarm circuit of Fig. 4 sends chimes of doom because of high level signal is arranged.IC ₃₀₄, Q ₃₀₃Drip a fast upper limit alarm circuit, VR Deng composition ₃₀₂Setting is the transfusion speed upper limit, just often IC in the shortest time of twice reset pulse ₃₀₄Because of no reset signal output low level, surpass VR when dripping fast signal ₃₀₂During the threshold value of setting up, output high level, nor gate IC _305-1Output low level, NAND gate IC _302-4The output high level, the audible alarm circuit of Fig. 4 sends chimes of doom because of high level signal is arranged.

In power supply of the present utility model and the audible alarm circuit 1, IC _403-1～IC _403-4Form the alarm sound circuit, wherein IC _403-1～IC _403-2The interval of the agitator decision sound that constitutes, IC _403-3～IC _403-4The frequency of the agitator decision sound that constitutes, R is passed through in the output of agitator ₄₁₀Be connected with buzzer.IC in Fig. 3 _302-4When the output of warning high level signal is arranged, IC among Fig. 4 _305-3High level output is promptly arranged, IC _403-11 foot make the starting of oscillation of sound equipment agitator because of high level is arranged, circuit promptly sends chimes of doom.Power pack: alternating current power supply is by electric fuse F and switch SW ₄₀₁Be connected with the mains transformer input, the output of transformator meets two ac input ends of rectifier bridge, IC ₄₀₁For+the 8V manostat, IC ₄₀₂For+the 5V manostat.J ₄₀₁, Q ₄₀₁, R ₄₀₁, R ₄₀₂, D ₄₀₁Constitute ac-dc converter circuit, when alternating current is arranged, Q ₄₀₁Conducting, relay J ₄₀₁Must be electric, its normal opened contact J _401-1Adhesive is connected, IC ₄₀₁Outfan then pass through J _401-1, D ₄₀₃One the tunnel connect power circuit+the 8V outfan, another road meets IC ₄₀₂Input, circuit is had+5V output simultaneously.Q ₄₀₂, R ₄₀₃, R ₄₀₄, LED ₄₀₁, BATT constitutes battery charger, when alternating current was arranged, circuit was given battery BATT charging, LED automatically ₄₀₁The indication charged state, after battery is full of electricity, Q ₄₀₂End, circuit stops charging automatically.When needs cut off the power supply suddenly with battery-powered operation or in Alternating Current Power Supply work, relay J ₄₀₁Dead electricity, its normally closed contact J _401-2Be in on-state, at this moment switch SW ₄₀₂As long as be in the close position, circuit gets final product operate as normal.LED ₄₀₂Be the work indication.R ₄₀₆, R ₄₀₇And nor gate IC _305-2, IC _305-3, IC _404-1Constitute battery low pressure alarming circuit simultaneously, when cell voltage is crossed when low R ₄₀₇On the dividing potential drop step-down, IC _404-1The output high level, IC _403-11 foot also because of there being high level to make the starting of oscillation of sound equipment agitator, circuit promptly sends chimes of doom.

Ultimate principle of the present utility model is: utilize micromotor speed regulating control technology to give the principle that inflation is exerted pressure in the infusion bottle, when making infusion bottle 6 be in the contour or lower slightly position of patient, can keep transfusion all the time and be pressed with certain high positive differential pressure with the vein that is subjected to the liquid patient, guarantee to infuse and normally carry out, and indicate transfusion speed with the LED light beam.Utilize photoelectric detecting technology that the transfusion drip speed signal is gathered to amplify and realize audible alarm.

Claims (6)

1, a kind of automatically controlled light field operations transfusion device, it is characterized in that it drips speed sensors, transfusion speed detection and signal processing circuit, inflator pump and speed governing ventilating control circuit thereof by infusion bottle, photoelectricity and form, be used for being communicated with infusion bottle by inflating catheter to the inflator pump of infusion bottle pressurization, the control signal of inflator pump links to each other with the output of speed governing ventilating control circuit, photoelectricity drips speed sensors and is sleeved on the horse Fei Shi dropper of transfusion device, and its fast signal output part connects the input of transfusion speed detection and signal processing circuit.

2,, it is characterized in that described transfusion speed detection links to each other with power supply and alarm sound circuit with the output of signal processing circuit by the described automatically controlled light field operations transfusion device of claim 1.

3, by the described automatically controlled light field operations transfusion device of claim 1, it is characterized in that described photoelectricity drips speed sensors by light emitting diode D ₃₀₁With photosensitive receiving tube Q ₃₀₁Constitute, its external form is a ring-like body, is sleeved on the horse Fei Shi dropper, and its output termination transfusion speed detects and signal processing circuit.

4, by the described automatically controlled light field operations transfusion device of claim 1, it is characterized in that described transfusion speed detect with signal processing circuit by amplifier, pulse shaper, lose pulse-detecting circuit, the driving gate circuit is formed, wherein, amplifier is by amplifier IC _301-1, IC _301-2And peripheral resistance R ₃₀₃～R ₃₁₁, capacitor C ₃₀₂～C ₃₀₅Constitute; Pulse shaper is by NAND gate IC _302-1, IC _302-2Constitute; Lose pulse-detecting circuit by time-base integrated circuit IC ₃₀₃, IC ₃₀₄, transistor Q ₃₀₂, Q ₃₀₃, capacitor C ₃₀₆, C ₃₀₇, resistance R ₃₁₄, R ₃₁₅And potentiometer VR ₃₀₁, VR ₃₀₂Constitute IC ₃₀₃, IC ₃₀₄Peripheral Resistor-Capacitor Unit respectively and separately constitutes the two-way monostable flipflop, and the reset terminal of two monostable flipflops meets transistor Q respectively ₃₀₂, Q ₃₀₃, constitute and lose pulse-detecting circuit; The driving gate circuit is by NAND gate IC _302-3, IC _302-4With nor gate IC _305-1Constitute; The input of amplifier is from amplifier IC _301-1Inverting input draw, pass through resistance R ₃₀₃And capacitor C ₃₀₁Connecing the output that photoelectricity drips speed sensors 8 is photosensitive receiving tube Q ₃₀₁Colelctor electrode, the output of amplifier is from IC _301-2Outfan draw, pass through resistance R respectively ₃₁₂, R ₃₁₃Connect two inputs of pulse shaper, i.e. NAND gate IC _302-1, IC _302-2Input, the output of pulse shaper is from NAND gate IC _302-1, IC _302-2Outfan draw, be transistor Q with two inputs losing pulse-detecting circuit respectively ₃₀₂, Q ₃₀₃Base stage link to each other, two outputs losing pulse shaper from the time basis set become and IC circuit ₃₀₃, IC ₃₀₄Outfan draw, connect two inputs of driving gate circuit respectively, i.e. NAND gate IC _302-3With nor gate IC _305-1Input, the output of driving gate circuit is from NAND gate IC _302-4Outfan draw the output that detects with signal processing circuit as transfusion speed and connect power supply and alarm sound circuit.

5, by the described automatically controlled light field operations transfusion device of claim 2, it is characterized in that described power supply and alarm sound circuit be made up of DC power supply circuit, sound equipment drive circuit and buzzer, wherein, DC power supply circuit is made of transformation rectification circuit, ac-dc converter circuit, battery charger, battery low pressure alarming drive circuit; The sound equipment drive circuit is by nor gate IC _305-2, IC _305-3, NAND gate IC _403-1, IC _403-2, IC _403-3, IC _403-4, resistance R ₄₀₆～R ₄₁₀Constitute, the output of battery low pressure alarming drive circuit is from NAND gate IC _404-1Outfan draw, the input of sound equipment drive circuit is from nor gate IC _305-2Two inputs draw, connect the output of battery low pressure alarming drive circuit and transfusion speed respectively and detect output with signal processing circuit, the output of sound equipment drive circuit is from NAND gate IC _403-4Outfan draw, through resistance R ₄₁₀Connect buzzer.

6, by the described automatically controlled light field operations transfusion device of claim 1, it is characterized in that described speed governing ventilating control circuit is made up of square wave signal generator, key control circuit, shift-register circuit, impedance inverter circuit, speed-regulating signal agitator, square wave signal generator is by time-base integrated circuit IC ₂₀₃, resistance R ₂₂₂, R ₂₂₃, capacitor C ₂₀₄, C ₂₀₅Constitute; Key control circuit is by transistor Q ₂₀₁～Q ₂₀₄, resistance R ₂₁₈～R ₂₂₁, capacitor C ₂₀₂, C ₂₀₃, button SW ₂₀₁, SW ₂₀₂Constitute; Shift-register circuit is by two bidirectional shift register IC ₂₀₁, IC ₂₀₁, resistance R ₂₀₀～R ₂₁₆, capacitor C ₂₀₁, diode D ₂₀₁～D ₂₀₈, LED ₂₀₀～LED ₂₀₇Constitute; Impedance inverter circuit is by light Rhizoma Nelumbinis N ₂₀₁, adjustable resistance R ₂₂₄, diode D ₂₀₉Constitute; The speed-regulating signal agitator is by time-base integrated circuit IC ₂₀₄, capacitor C ₂₀₆, C ₂₀₇, C ₂₀₉, C ₂₁₀, resistance R ₂₂₅Constitute, the output of square wave signal generator is from time-base integrated circuit IC ₂₀₃Outfan draw and meet two bidirectional shift register IC in the shift-register circuit ₂₀₁, IC ₂₀₂CP end, the two-way output of key control circuit is by transistor Q ₂₀₁, Q ₂₀₃Colelctor electrode is drawn, and is connected to two bidirectional shift register IC respectively ₂₀₁, IC ₂₀₂State control end MA and MB, the output of shift-register circuit is from diode D ₂₀₂～D ₂₀₈Negative terminal is drawn, and the input that is connected to impedance inverter circuit is light Rhizoma Nelumbinis N ₂₀₁Input, the output of impedance inverter circuit is by light Rhizoma Nelumbinis N ₂₀₁Outfan draw through resistance R ₂₂₄The instant basis set of input that is connected to the speed-regulating signal agitator becomes IC circuit ₂₀₄Input, the output of speed-regulating signal agitator is by time-base integrated circuit IC ₂₀₄Outfan draw, through resistance R ₂₂₆With transistor Q ₂₀₅Be connected to the inflation motor M in the inflator pump ₂₀₁

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