CN102274011A - Monitoring device for recovery of severed limbs - Google Patents
Monitoring device for recovery of severed limbs Download PDFInfo
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- CN102274011A CN102274011A CN2011101395743A CN201110139574A CN102274011A CN 102274011 A CN102274011 A CN 102274011A CN 2011101395743 A CN2011101395743 A CN 2011101395743A CN 201110139574 A CN201110139574 A CN 201110139574A CN 102274011 A CN102274011 A CN 102274011A
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Abstract
The invention discloses a monitoring device for the recovery of severed limbs, which comprises a casing, wherein a power supply unit, a singlechip, a signal filtering circuit, a probe driving circuit, an LCD (Liquid Crystal Display), a keyboard, a buzzer and an SPO2 (oxygen saturation) probe are arranged in the casing; the SPO2 probe is used for clamping the extremity and is protruded out of the casing; the power supply unit is electrically connected with the singlechip, the signal filtering circuit, the probe driving circuit, the LCD and the keyboard respectively; the keyboard, the first input end of the singlechip, the first output end of the singlechip, the probe driving circuit, the SPO2 probe, the signal filtering circuit, the second input end of the singlechip, the second output end of the singlechip and the LCD are electrically connected sequentially; and the buzzer is electrically connected with the third output end of the singlechip. The monitoring device for the recovery of severed limbs can overcome the defects of inconvenient operation, poor practicality and the like in the prior art, and achieves the advantages of convenient operation and good practicality.
Description
Technical field
The present invention relates to electronic installation, particularly, relate to a kind of severed limb rehabilitation monitor device.
Background technology
At present, China's replantation of amputated limb success rate is 90%-95%, but acceptance rate 50%-70% or lower only.The replantation of amputated limb is not to pursue the success of replanting simply, but will be purpose to recover its function.
Limb dividing is the utmost point severe trauma that comprises all tissue injurys of limbs, replants and often leaves over problems such as arthrogryposis, muscle paralysis, muscle adhesion of tendon, sensory recovery be bad after surviving, and when serious limbs is survived and does not have function.Therefore except that improving the operation quality, the rehabilitation of carrying out series is very important.
Rehabilitation after the replantation of amputated limb is the process of an arduousness, and except positive cooperation doctor's treatment, the patient also needs to keep a close eye on the health status of oneself and in time arrives examination in hospital.For the blood supply situation of recognizing the human body acra to prevent often need to carry out the inspection of limbs blood supply situation by the bad tissue necrosis that causes of limbs blood supply.Regrettably also do not have a kind of blood supply of limbs easily checkout gear at present, the patient often needs to carry out the diagnosis of specialty to hospital, and very big inconvenience is arranged, and the worst is to tend to delay the state of an illness.The rehabilitation situation that how correctly to detect severed finger apace is present problem demanding prompt solution.
In patent (application) number is in the utility application of " 02260985.7 ", a kind of device of acra blood fortune monitor is disclosed, this device utilizes the weak vibration of a kind of sensor senses of formula in body severed limb (toe) blood flow, convert vibration signal to the signal of telecommunication, adopt what amplifier filter circuit to remove the interference in the environment and convert pulse signal to and drive alarm.This matching requirements testee is in very quietly under the situation in case wrong vibration signal influence, and to testee's limbs and device contact also not definition of tightness degree, practical application is relatively more difficult.
In sum, in realizing process of the present invention, the inventor finds to exist at least in the prior art defectives such as using inconvenient and poor practicability.
Summary of the invention
The objective of the invention is to,, propose a kind of severed limb rehabilitation monitor device, to realize easy to use and the good advantage of practicality at the problems referred to above.
For achieving the above object, the technical solution used in the present invention is: a kind of severed limb rehabilitation monitor device, comprise casing, in described casing inside, the SPO2 that is provided with power subsystem, single-chip microcomputer, signal filter circuit, probe drive circuit, LCD display, keyboard, buzzer and is used to be clamped in acra and stretch out casing pops one's head in, wherein: described power subsystem is electrically connected with single-chip microcomputer, signal filter circuit, probe drive circuit, LCD display and keyboard respectively; First outfan of the first input end of described keyboard, single-chip microcomputer, single-chip microcomputer, probe drive circuit, SPO2 probe, signal filter circuit, second input of single-chip microcomputer, second outfan and the LCD display of single-chip microcomputer are electrically connected successively; The 3rd outfan of described buzzer and single-chip microcomputer is electrically connected.
Further, on described casing, be provided with compensating roller.
Further, also be provided with memorizer in described casing, the I/O end of described memorizer and single-chip microcomputer is electrically connected.
Further, also be provided with clock in described casing, the 2nd I/O end of described clock and single-chip microcomputer is electrically connected.
Further, described power subsystem comprises USB interface, charging circuit, accumulator and the power supply that is electrically connected successively.
Further, described probe drive circuit comprises dc source, first resistance R 1, second resistance R 2, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R the 8, the 11 resistance R the 11, the 13 resistance R the 13, the 14 resistance R the 14, the 12 resistance R 12, first capacitor C 1, interface J1 and first to fourth metal-oxide-semiconductor Q1-Q4, wherein:
Described dc source, after first resistance R 1 and the 5th resistance R 5, be connected with the base stage of the first metal-oxide-semiconductor Q1, through first capacitor C, 1 ground connection, and after second resistance R 2 and the 6th resistance R 6, be connected with the base stage of the second metal-oxide-semiconductor Q2; The common port of the dc source and first capacitor C 1 is connected with the emitter stage of the first metal-oxide-semiconductor Q1 and the emitter stage of the second metal-oxide-semiconductor Q2 simultaneously;
The base stage of described the 3rd metal-oxide-semiconductor Q3, ground connection after the 7th resistance R 7 and the 11 resistance R 11 successively; The colelctor electrode of the first metal-oxide-semiconductor Q1 is connected with the colelctor electrode of the 3rd metal-oxide-semiconductor Q3, and the emitter stage of the 3rd metal-oxide-semiconductor Q3 is through the 13 resistance R 13 ground connection, the common port of the first metal-oxide-semiconductor Q1 and the 3rd metal-oxide-semiconductor Q3, is connected with the 2nd terminals of interface J1;
The base stage of described the 4th metal-oxide-semiconductor Q4, ground connection after the 8th resistance R 8 and the 12 resistance R 12 successively; The colelctor electrode of the second metal-oxide-semiconductor Q2 is connected with the colelctor electrode of the 4th metal-oxide-semiconductor Q4, and the emitter stage of the 4th metal-oxide-semiconductor Q4 is through the 14 resistance R 14 ground connection, the common port of the second metal-oxide-semiconductor Q2 and the 4th metal-oxide-semiconductor Q4, is connected with the 3rd terminals of interface J1;
The 7th terminals ground connection of described interface J1, the 9th terminals are the DET_A end, and the 5th terminals are the DET_C end; The common port of first resistance R 1 and the 5th resistance R 5 is the R_SWT end; The common port of the 7th resistance R 7 and the 11 resistance R 11 is the DAC0_B end; The common port of second resistance R 2 and the 6th resistance R 6 is the IR_SWT end; The common port of the 8th resistance R 8 and the 12 resistance R 12 is the DAC0_A end.
Further, described signal filter circuit comprises dc source, the first operational amplifier U1A, the second operational amplifier U1B, the 3rd operational amplifier U1C, four-operational amplifier U1D, second to the 8th capacitor C 2-C8, the 3rd resistance R 3, the 4th resistance R 4, the 9th resistance R 9, the tenth resistance R the 10, the 15 resistance R the 15, the 16 resistance R 16 and the 17 resistance R 17, wherein:
Described dc source is through second capacitor C, 2 ground connection, and is connected with the power end of the first operational amplifier U1A; The in-phase input end of the first operational amplifier U1A is connected with the in-phase input end of four-operational amplifier U1D; The inverting input of the first operational amplifier U1A, through the 4th capacitor C 4 ground connection, connect DET_A end through the 9th resistance R 9, and through the 15 resistance and the 6th capacitor C 6 of parallel connection, be connected with the outfan of the first operational amplifier U1A and the in-phase input end of the second operational amplifier U1B;
The inverting input of described four-operational amplifier U1D, through the 5th capacitor C 5 ground connection, connect DET_C end through the tenth resistance R 10, and through the 16 resistance R 16 and the 7th capacitor C 7 of parallel connection, be connected with the outfan of four-operational amplifier U1D and the inverting input of the second operational amplifier U1B;
The outfan of the described second operational amplifier U1B after the 3rd capacitor C 3, is connected with the in-phase input end of the 3rd operational amplifier U1C, and through the 17 resistance R 17 ground connection; The inverting input of described the 3rd operational amplifier U1C, through the 3rd resistance R 3 ground connection, and through the 4th resistance R 4 of parallel connection and the 8th electric capacity R8, be connected with outfan and the SPO2 end of the 3rd operational amplifier U1C.
The severed limb rehabilitation monitor device of various embodiments of the present invention, owing to comprise casing, be provided with power subsystem in casing inside, single-chip microcomputer, signal filter circuit, the probe drive circuit, LCD display, keyboard, buzzer, and be used to be clamped in acra, and stretch out the SPO2 probe of casing, power subsystem respectively with single-chip microcomputer, signal filter circuit, the probe drive circuit, LCD display and keyboard are electrically connected, keyboard, the first input end of single-chip microcomputer, first outfan of single-chip microcomputer, the probe drive circuit, the SPO2 probe, signal filter circuit, second input of single-chip microcomputer, second outfan of single-chip microcomputer, and LCD display, be electrically connected successively; The 3rd outfan of buzzer and single-chip microcomputer is electrically connected; Can carry out real-time monitoring, analysis to children under guardianship's physiological parameter, and realize real-time monitoring, analysis,, can report to the police automatically and point out the staff in time to handle in case note abnormalities or parameter is when surpassing default index to health parameters; Use defective inconvenient and poor practicability in the prior art thereby can overcome, to realize easy to use and the good advantage of practicality.
Other features and advantages of the present invention will be set forth in the following description, and, partly from description, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the description of being write, claims and accompanying drawing.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of description, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the operation principle block diagram of the severed limb rehabilitation monitor device according to the present invention;
Fig. 2 is structure and the electrical equipment principle schematic that SPO2 pops one's head in the severed limb rehabilitation monitor device according to the present invention;
Fig. 3 be according to the present invention in the severed limb rehabilitation monitor device probe drive circuit electrical schematic diagram;
Fig. 4 is the electrical schematic diagram of signal filter circuit in the severed limb rehabilitation monitor device according to the present invention.
In conjunction with the accompanying drawings, Reference numeral is as follows in the embodiment of the invention:
The 1-acra; The 2-SPO2 probe; The 3-signal filter circuit; The 4-drive circuit of popping one's head in; The 5-single-chip microcomputer; The 6-LCD display; The 7-keyboard; The 8-memorizer; The 9-buzzer; The 10-clock; The 11-power supply; The 12-accumulator; The 13-charging circuit; The 14-USB interface; The 15-receiving light; The 16-red globe lamp; The 17-infrared lamp.
The specific embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
According to the embodiment of the invention,, provide a kind of severed limb rehabilitation monitor device as Fig. 1-shown in Figure 4.
In Fig. 1, present embodiment comprises casing, in casing inside, the SPO2 probe 2 that is provided with power subsystem, single-chip microcomputer 5, signal filter circuit 3, probe drive circuit 4, LCD display 6, keyboard 7, buzzer 9, memorizer 8, clock 10 and is clamped in acra 1; In the casing outside, be provided with compensating roller.Wherein: power subsystem is electrically connected with single-chip microcomputer 5, signal filter circuit 6, probe drive circuit 4, LCD display 6 and keyboard 7 respectively; First outfan of the first input end of keyboard 7, single-chip microcomputer 5, single-chip microcomputer 5, probe drive circuit 4, SPO2 probe 2, signal filter circuit 3, second input of single-chip microcomputer 5, second outfan and the LCD display 6 of single-chip microcomputer 5 are electrically connected successively; Buzzer 9 is electrically connected with the 3rd outfan of single-chip microcomputer 5, and memorizer 8 is electrically connected with the I/O end of single-chip microcomputer 5, and clock 10 is electrically connected with the 2nd I/O end of single-chip microcomputer 5.
Here, power subsystem comprises usb 14, charging circuit 13, the accumulator 12 and power supply 11 that is electrically connected successively.
When the severed limb rehabilitation monitor device of the foregoing description is worked, SPO2 probe 2 is with the blood oxygen saturation information and the pulse volume waveform of children under guardianship's acra 1 of collecting, signal filter circuit 3 carries out the signal that SPO2 probe 2 obtains filtering and provides enough gains to be amplified to mould/number conversion module (A/DC), then signal is submitted to single-chip microcomputer 5 and is handled.
In order to save cost, the single-chip microcomputer 5 that the foregoing description is selected for use has built-in 12Bits A/DC, single-chip microcomputer 5 provides the signal processing to signal, once samples every the 5 couples of A/DC of time single-chip microcomputer that set, and submits to LCD display 6 to show the SPO2 data that obtain.Clock 10 provides clock reference for severed limb rehabilitation monitor device, and single-chip microcomputer 5 is at pre-set time interval down-sampling SPO2 numerical value, and interval can be provided with by children under guardianship voluntarily by keyboard 7.Accumulator 13 provides the power supply 11 of severed limb rehabilitation monitor device, but the lithium battery that this accumulator 13 is recharges, and charging circuit 13 can charge by accumulators 13, the input port is a usb 1 4(standard interface).The user can utilize charger or it is received charging voluntarily on the USB interface of computer.
The severed limb rehabilitation checkout gear of the above embodiment of the present invention can directly be enclosed within on the acra 1 of finger or toe, is used to detect the rehabilitation situation of this severed limb, and provides display lamp to represent health condition, and is simple and convenient.
Particularly, the severed limb rehabilitation checkout gear of the above embodiment of the present invention utilizes the oxygen content or the saturation of popular clinically now pulsation blood oxygen technology for detection acra (finger or toe), and this is to weigh the important parameter index that the postoperative limbs recover.Oxygen is the important substance that earns a bare living, and human tissue cell carries out the needed oxygen of metabolism and obtains from blood.When flowing through pulmonary to pulsation under the promotion of blood at heart, obtain oxygen from alveolar, enter blood capillary through tremulous pulse then, discharge oxygen there.The oxygen that blood is entrained has only about 2% to be dissolved in the blood plasma, and all the other 98% enter tissue after being combined into HbO2 Oxyhemoglobin (HbO2) with hemoglobin (Hb).The configuration that can depend on partial pressure of oxygen and Hb with the bonded oxygen molecule of Hb.Under the normal condition, the partial pressure of oxygen of pulmonary makes the combination of oxygen and Hb be saturation.After oxygen consumption was in tissue, partial pressure of oxygen reduced, and stimulated HbO2 to discharge oxygen, made it heavily become the reduced hemoglobin of not being with oxygen.
Being used for the parameter of the HbO2 Oxyhemoglobin ratio in the blood oxygen that characterizes is called blood oxygen saturation (SPO2).It is defined as: SPO2=[HbO2/ (HbO2+Hb)] * 100% in the past, the partial pressure of oxygen that main clinically extracting arterial blood is measured wherein calculates SPO2, this method can not continuous monitoring, and brings misery to patient.The measurement of noinvasive arterial oxygen saturation is a kind of technology that grows up at the beginning of the eighties.Its measuring principle comprises spectrophotometry and volumetric blood trace two parts, and spectrophotometry is different to the absorption characteristic of light with HbO2 Oxyhemoglobin according to hemoglobin in the blood oxygen.HbO2 is less to 660nm red light absorption amount, and more to 940nm infrared Absorption amount; On the contrary, Hb is less to 660nm red light absorption amount, and more to 940nm infrared Absorption amount.Ratio with spectrophotometry infrared Absorption amount and red light absorption amount, it has also utilized other composition in the tissue simultaneously, as: the absorption signal of skin, skeleton, muscle, venous blood etc. is constant, is along with pulse is done cyclically-varying and have only HbO2 in the arterial blood and the absorption signal of Hb.Another important principles that detecting sphygmus and blood oxygen saturation is measured is to have blood to beat.During with light beam transillumination peripheral tissues, the attenuation degree that detects transillumination luminous energy is relevant with cardiac cycle.The peripheral blood capacity is maximum during heart contraction, and absorbing amount is also maximum, detected luminous energy minimum; Just the opposite during diastole.The variation of absorbing amount has reflected the variation of blood volume, and the blood volume of only beating could change the power of transillumination luminous energy, and Here it is, and volumetric blood is traced principle.
Use the SPO2 monitoring, can carry out the postoperative rehabilitation of severed limb effectively and detect.The SPO2 measured value illustrates that normally the hemoglobin in the arterial blood has obtained good oxygenate, and pulse volume waveform normally then points out the small artery tension force in the determination part bit organization normal.
Probe circuit as shown in Figure 2 is the enforcement to the SPO2 probe 2 of Fig. 1.Probe circuit is shown in a among Fig. 2, comprise that three LED(are receiving light 15, red globe lamp 16 and infrared lamp 17), wherein red globe lamp 16 is 660nm red globe lamp D1, infrared lamp 17 is the infrared lamp D2 of 940nm, and receiving light 15 is that the opto-electronic conversion lamp is used to receive from the light intensity of red globe lamp 16 with infrared lamp 17; B among actual equivalent function circuit such as Fig. 2; The interface J1 of interface shown in c among Fig. 2 of probe and circuit.
In Fig. 2, three LED are medical SPO2 pick offs of standard, can buy on market; DB9 is an interface sketch map, and severed limb rehabilitation monitor device only need get final product with four connecting lines.
Probe drive circuit as shown in Figure 3 comprises dc source (as the dc source of 5V), first resistance R 1, second resistance R 2, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R the 8, the 11 resistance R the 11, the 13 resistance R the 13, the 14 resistance R the 14, the 12 resistance R 12, first capacitor C 1, interface J1 and first to fourth metal-oxide-semiconductor Q1-Q4.
Wherein, in the probe drive circuit: dc source, after first resistance R 1 and the 5th resistance R 5, be connected with the base stage of the first metal-oxide-semiconductor Q1, through first capacitor C, 1 ground connection, and after second resistance R 2 and the 6th resistance R 6, be connected with the base stage of the second metal-oxide-semiconductor Q2; The common port of the dc source and first capacitor C 1 is connected with the emitter stage of the first metal-oxide-semiconductor Q1 and the emitter stage of the second metal-oxide-semiconductor Q2 simultaneously; The base stage of the 3rd metal-oxide-semiconductor Q3, ground connection after the 7th resistance R 7 and the 11 resistance R 11 successively; The colelctor electrode of the first metal-oxide-semiconductor Q1 is connected with the colelctor electrode of the 3rd metal-oxide-semiconductor Q3, and the emitter stage of the 3rd metal-oxide-semiconductor Q3 is through the 13 resistance R 13 ground connection, the common port of the first metal-oxide-semiconductor Q1 and the 3rd metal-oxide-semiconductor Q3, is connected with the 2nd terminals of interface J1; The base stage of the 4th metal-oxide-semiconductor Q4, ground connection after the 8th resistance R 8 and the 12 resistance R 12 successively; The colelctor electrode of the second metal-oxide-semiconductor Q2 is connected with the colelctor electrode of the 4th metal-oxide-semiconductor Q4, and the emitter stage of the 4th metal-oxide-semiconductor Q4 is through the 14 resistance R 14 ground connection, the common port of the second metal-oxide-semiconductor Q2 and the 4th metal-oxide-semiconductor Q4, is connected with the 3rd terminals of interface J1; The 7th terminals ground connection of interface J1, the 9th terminals are the DET_A end, and the 5th terminals are the DET_C end; The common port of first resistance R 1 and the 5th resistance R 5 is the R_SWT end; The common port of the 7th resistance R 7 and the 11 resistance R 11 is the DAC0_B end; The common port of second resistance R 2 and the 6th resistance R 6 is the IR_SWT end; The common port of the 8th resistance R 8 and the 12 resistance R 12 is the DAC0_A end.
Above-mentioned probe drive circuit is the enforcement to the probe drive circuit 4 of Fig. 1.This is the switch matrix of a fluorescent tube, by controlling four metal-oxide-semiconductor Q1 ~ Q4 fluorescent tube red globe lamp D1 and orderly the opening of infrared lamp D2 is closed, and 5,9 feet at J1 detect printing opacity simultaneously, does further processing for the signal filter circuit 3 of Fig. 1.R1 wherein, R5, Q1 are used for being connected of opening power 5V and J1 pin two, and R2, R6, Q2 are used for being connected of opening power and J1 pin 3.R7, R11, Q3 are used to set the operating current of resistance R 13, and its principle is to utilize the audion amplification of Q3, R8, R12, Q4 are used to set the operating current of resistance R 14, and its principle is to utilize the audion amplification of Q4.Because two lamps are connected between 2,3 feet of J1, open Q1, Q4 can light the infrared lamp D2 lamp of 940nm, opens Q1, and Q4 can light the infrared lamp D1 lamp of 660nm.Concrete working method is divided into several steps: the first step, and single-chip microcomputer 5 is provided with the R_SWT signal and opens being connected of 5V power supply and J1 pin two among Fig. 1; In second step, the DAC of single-chip microcomputer 5 exports the accurately electric current of Control of Voltage R8 among Fig. 1, and the electric current that Q4 opens and the electric current that flows through R14 equals R8 multiply by the amplification of Q4, and red globe lamp D1 opens; In the 3rd step, single-chip microcomputer 5 built-in ADC gather the signal of DET_A and DET_C and perform an analysis, and obtain the information of red globe lamp; In the 4th step, single-chip microcomputer 5 is provided with IR_SWT and opens being connected of 5V power supply and J1 pin 3 among Fig. 1; In the 5th step, the DAC of single-chip microcomputer 5 exports the accurately electric current of Control of Voltage R7 among Fig. 1, and the electric current that Q3 opens and the electric current that flows through R13 equals R7 multiply by the amplification of Q3, and infrared lamp D2 opens; In the 6th step, single-chip microcomputer 5 built-in ADC gather the signal of DET_A and DET_C and perform an analysis, and obtain the information of infrared lamp.Sample the again and again information of red globe lamp and infrared lamp of single-chip microcomputer 5.
In Fig. 3, the realization cost of probe drive circuit is low, simple in structure, only needs four metal-oxide-semiconductors to realize.
Signal filter circuit as shown in Figure 4 comprises dc source (as the dc source of 5V), the first operational amplifier U1A, the second operational amplifier U1B, the 3rd operational amplifier U1C, four-operational amplifier U1D, second to the 8th capacitor C 2-C8, the 3rd resistance R 3, the 4th resistance R 4, the 9th resistance R 9, the tenth resistance R the 10, the 15 resistance R the 15, the 16 resistance R 16 and the 17 resistance R 17.
Wherein, in signal filter circuit: dc source is through second capacitor C, 2 ground connection, and is connected with the power end of the first operational amplifier U1A; The in-phase input end of the first operational amplifier U1A is connected with the in-phase input end of four-operational amplifier U1D; The inverting input of the first operational amplifier U1A, through the 4th capacitor C 4 ground connection, connect DET_A end through the 9th resistance R 9, and through the 15 resistance and the 6th capacitor C 6 of parallel connection, be connected with the outfan of the first operational amplifier U1A and the in-phase input end of the second operational amplifier U1B; The inverting input of four-operational amplifier U1D, through the 5th capacitor C 5 ground connection, connect DET_C end through the tenth resistance R 10, and through the 16 resistance R 16 and the 7th capacitor C 7 of parallel connection, be connected with the outfan of four-operational amplifier U1D and the inverting input of the second operational amplifier U1B; The outfan of the second operational amplifier U1B after the 3rd capacitor C 3, is connected with the in-phase input end of the 3rd operational amplifier U1C, and through the 17 resistance R 17 ground connection; The inverting input of the 3rd operational amplifier U1C, through the 3rd resistance R 3 ground connection, and through the 4th resistance R 4 of parallel connection and the 8th electric capacity R8, be connected with outfan and the SPO2 end of the 3rd operational amplifier U1C.
Above-mentioned signal filter circuit is the enforcement to the signal filter circuit 3 of Fig. 1, main realizes the pop one's head in filtering of 2 output signals to SPO2.The A of U1, B, D three amplifiers have been formed the differential amplifier circuit of three amplifiers, and its main purpose is to remove the common mode disturbances of circuit.C3 and R17 have constituted high pass filter, and its cut-off frequency is 1/ (6.28*C3*R17).R3, R4 and U1C have constituted the forward amplifier, and its amplification is 1+R4/R3, and R4 and C8 have constituted low pass filter, and its cut-off frequency is 1/ (6.28*C8*R4).
In Fig. 4, the characteristics of signal filter circuit are: the operational amplifier of JFET structure is done current/voltage (I/V) conversion, and the bias voltage that causes to the rear end is little; Adopt the structure (U1A, U1B, U1D) of three amplifiers can effectively improve signal to noise ratio (Signal to Noise Ratio is called for short SNR) and common mode rejection ratio; Wherein, secondary structure for amplifying U1C can be provided with the gain that oneself needs easily flexibly.
The severed limb rehabilitation checkout gear of the above embodiment of the present invention; to being the notion of a passive monitoring by guardianship; the physiological parameter that is children under guardianship is by real-time monitoring, analysis; microprocessor can be realized real-time monitoring, the analysis to health parameters; in case note abnormalities or parameter surpasses default index; device can report to the police and point out children under guardianship to do further diagnosis to hospital automatically, reduces the treatment failure that causes because of tissue necrosis.
Compared with prior art, the severed limb rehabilitation checkout gear of the above embodiment of the present invention has low-power consumption, low cost, convenient and practical characteristics; Children under guardianship if with its be worn on acra just can, the convenient use removed the misery that often will go to hospital to check from; In addition, this severed limb rehabilitation checkout gear carries buzzer, and severed limb rehabilitation checkout gear can automatic buzzing alarm user.
In sum, the severed limb rehabilitation monitor device of various embodiments of the present invention, owing to comprise casing, be provided with power subsystem in casing inside, single-chip microcomputer, signal filter circuit, the probe drive circuit, LCD display, keyboard, buzzer, and be used to be clamped in acra, and stretch out the SPO2 probe of casing, power subsystem respectively with single-chip microcomputer, signal filter circuit, the probe drive circuit, LCD display and keyboard are electrically connected, keyboard, the first input end of single-chip microcomputer, first outfan of single-chip microcomputer, the probe drive circuit, the SPO2 probe, signal filter circuit, second input of single-chip microcomputer, second outfan of single-chip microcomputer, and LCD display, be electrically connected successively; The 3rd outfan of buzzer and single-chip microcomputer is electrically connected; Can carry out real-time monitoring, analysis to children under guardianship's physiological parameter, and realize real-time monitoring, analysis,, can report to the police automatically and point out the staff in time to handle in case note abnormalities or parameter is when surpassing default index to health parameters; Use defective inconvenient and poor practicability in the prior art thereby can overcome, to realize easy to use and the good advantage of practicality.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. severed limb rehabilitation monitor device, it is characterized in that, comprise casing, in described casing inside, the SPO2 that is provided with power subsystem, single-chip microcomputer, signal filter circuit, probe drive circuit, LCD display, keyboard, buzzer and is used to be clamped in acra and stretch out casing pops one's head in, wherein:
Described power subsystem is electrically connected with single-chip microcomputer, signal filter circuit, probe drive circuit, LCD display and keyboard respectively;
First outfan of the first input end of described keyboard, single-chip microcomputer, single-chip microcomputer, probe drive circuit, SPO2 probe, signal filter circuit, second input of single-chip microcomputer, second outfan and the LCD display of single-chip microcomputer are electrically connected successively;
The 3rd outfan of described buzzer and single-chip microcomputer is electrically connected.
2. severed limb rehabilitation monitor device according to claim 1 is characterized in that, on described casing, is provided with compensating roller.
3. severed limb rehabilitation monitor device according to claim 1 is characterized in that, also is provided with memorizer in described casing, and the I/O end of described memorizer and single-chip microcomputer is electrically connected.
4. severed limb rehabilitation monitor device according to claim 1 is characterized in that, also is provided with clock in described casing, and the 2nd I/O end of described clock and single-chip microcomputer is electrically connected.
5. according to each described severed limb rehabilitation monitor device among the claim 1-4, it is characterized in that described power subsystem comprises USB interface, charging circuit, accumulator and the power supply that is electrically connected successively.
6. severed limb rehabilitation monitor device according to claim 1, it is characterized in that, described probe drive circuit comprises dc source, first resistance R 1, second resistance R 2, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R the 8, the 11 resistance R the 11, the 13 resistance R the 13, the 14 resistance R the 14, the 12 resistance R 12, first capacitor C 1, interface J1 and first to fourth metal-oxide-semiconductor Q1-Q4, wherein:
Described dc source, after first resistance R 1 and the 5th resistance R 5, be connected with the base stage of the first metal-oxide-semiconductor Q1, through first capacitor C, 1 ground connection, and after second resistance R 2 and the 6th resistance R 6, be connected with the base stage of the second metal-oxide-semiconductor Q2; The common port of the dc source and first capacitor C 1 is connected with the emitter stage of the first metal-oxide-semiconductor Q1 and the emitter stage of the second metal-oxide-semiconductor Q2 simultaneously;
The base stage of described the 3rd metal-oxide-semiconductor Q3, ground connection after the 7th resistance R 7 and the 11 resistance R 11 successively; The colelctor electrode of the first metal-oxide-semiconductor Q1 is connected with the colelctor electrode of the 3rd metal-oxide-semiconductor Q3, and the emitter stage of the 3rd metal-oxide-semiconductor Q3 is through the 13 resistance R 13 ground connection, the common port of the first metal-oxide-semiconductor Q1 and the 3rd metal-oxide-semiconductor Q3, is connected with the 2nd terminals of interface J1;
The base stage of described the 4th metal-oxide-semiconductor Q4, ground connection after the 8th resistance R 8 and the 12 resistance R 12 successively; The colelctor electrode of the second metal-oxide-semiconductor Q2 is connected with the colelctor electrode of the 4th metal-oxide-semiconductor Q4, and the emitter stage of the 4th metal-oxide-semiconductor Q4 is through the 14 resistance R 14 ground connection, the common port of the second metal-oxide-semiconductor Q2 and the 4th metal-oxide-semiconductor Q4, is connected with the 3rd terminals of interface J1;
The 7th terminals ground connection of described interface J1, the 9th terminals are the DET_A end, and the 5th terminals are the DET_C end; The common port of first resistance R 1 and the 5th resistance R 5 is the R_SWT end; The common port of the 7th resistance R 7 and the 11 resistance R 11 is the DAC0_B end; The common port of second resistance R 2 and the 6th resistance R 6 is the IR_SWT end; The common port of the 8th resistance R 8 and the 12 resistance R 12 is the DAC0_A end.
7. severed limb rehabilitation monitor device according to claim 1, it is characterized in that, described signal filter circuit comprises dc source, the first operational amplifier U1A, the second operational amplifier U1B, the 3rd operational amplifier U1C, four-operational amplifier U1D, second to the 8th capacitor C 2-C8, the 3rd resistance R 3, the 4th resistance R 4, the 9th resistance R 9, the tenth resistance R the 10, the 15 resistance R the 15, the 16 resistance R 16 and the 17 resistance R 17, wherein:
Described dc source is through second capacitor C, 2 ground connection, and is connected with the power end of the first operational amplifier U1A; The in-phase input end of the first operational amplifier U1A is connected with the in-phase input end of four-operational amplifier U1D; The inverting input of the first operational amplifier U1A, through the 4th capacitor C 4 ground connection, connect DET_A end through the 9th resistance R 9, and through the 15 resistance and the 6th capacitor C 6 of parallel connection, be connected with the outfan of the first operational amplifier U1A and the in-phase input end of the second operational amplifier U1B;
The inverting input of described four-operational amplifier U1D, through the 5th capacitor C 5 ground connection, connect DET_C end through the tenth resistance R 10, and through the 16 resistance R 16 and the 7th capacitor C 7 of parallel connection, be connected with the outfan of four-operational amplifier U1D and the inverting input of the second operational amplifier U1B;
The outfan of the described second operational amplifier U1B after the 3rd capacitor C 3, is connected with the in-phase input end of the 3rd operational amplifier U1C, and through the 17 resistance R 17 ground connection; The inverting input of described the 3rd operational amplifier U1C, through the 3rd resistance R 3 ground connection, and through the 4th resistance R 4 of parallel connection and the 8th electric capacity R8, be connected with outfan and the SPO2 end of the 3rd operational amplifier U1C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101395743A CN102274011A (en) | 2011-05-26 | 2011-05-26 | Monitoring device for recovery of severed limbs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101395743A CN102274011A (en) | 2011-05-26 | 2011-05-26 | Monitoring device for recovery of severed limbs |
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| Publication Number | Publication Date |
|---|---|
| CN102274011A true CN102274011A (en) | 2011-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101395743A Pending CN102274011A (en) | 2011-05-26 | 2011-05-26 | Monitoring device for recovery of severed limbs |
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| Country | Link |
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| CN (1) | CN102274011A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105740187A (en) * | 2016-04-01 | 2016-07-06 | 康泰医学***（秦皇岛）股份有限公司 | USB multiplex interface circuit and blood oxygen detecting device provided with same |
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| CN1348741A (en) * | 2001-11-06 | 2002-05-15 | 浙江大学 | Portable intelligent dynamic cardiograph |
| CN201216674Y (en) * | 2008-07-14 | 2009-04-08 | 胡大勇 | Nursing and monitoring apparatus for amputative limb and finger |
| CN201642025U (en) * | 2010-01-25 | 2010-11-24 | 王红梅 | Blood oxygen saturation monitor device for internal medicine |
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| CN1120427A (en) * | 1995-07-20 | 1996-04-17 | 中国航天工业总公司第一研究院第十三研究所 | Woundless monitor for pulse rate blood oxygen saturation degree |
| CN1348741A (en) * | 2001-11-06 | 2002-05-15 | 浙江大学 | Portable intelligent dynamic cardiograph |
| CN201216674Y (en) * | 2008-07-14 | 2009-04-08 | 胡大勇 | Nursing and monitoring apparatus for amputative limb and finger |
| CN201642025U (en) * | 2010-01-25 | 2010-11-24 | 王红梅 | Blood oxygen saturation monitor device for internal medicine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105740187A (en) * | 2016-04-01 | 2016-07-06 | 康泰医学***（秦皇岛）股份有限公司 | USB multiplex interface circuit and blood oxygen detecting device provided with same |
| CN105740187B (en) * | 2016-04-01 | 2018-10-09 | 康泰医学***（秦皇岛）股份有限公司 | A kind of USB multiplex interfaces circuit and the blood oxygen detection device for having the circuit |
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