CN206315336U

CN206315336U - A kind of medical Transfusion device warning system

Info

Publication number: CN206315336U
Application number: CN201620861537.1U
Authority: CN
Inventors: 金魁; 李霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-08-11
Filing date: 2016-08-11
Publication date: 2017-07-11
Anticipated expiration: 2026-08-11

Abstract

The utility model discloses a kind of medical Transfusion device warning system, including by monolithic processor controlled drop speed detection warning device, drop speed detection warning device includes the infrared opposite-radiation sensor for being used to measure liquid medicine dropleting speed；Speed adjusting gear for controlling liquid medicine dropleting speed；LED display for showing liquid medicine dropleting speed；For the alarm to patient and nurse station prompting.Using the monolithic processor controlled infusion alarmings of AT89C52, solve transfusion end can not find the problem of transfusion is completed in time.By warning reminding doctor patient, the pressure of doctors and nurses is reduced.

Description

A kind of medical Transfusion device warning system

Technical field

The present invention relates to a kind of medical instruments, more specifically, it relates to a kind of medical Transfusion device warning system.

Background technology

When hospital transfusion patient and medical personnel be always concerned about transfusion when ended questions：When patient infusion, Probably due to the carelessness of patient doctor, no to find that transfusion terminates in time, and carries out appropriate processing, if processing is too late When appropriate blood will flow back into the situation of woven hose, can make for a long time at acupuncture treatment occur oedema.If processing is early, liquid medicine It is not completely used up, wastes liquid medicine.Patient occurs blood backflow or wastes the wealth of patient, so allows doctor and patient Relation is worse, if one infusion alarm of design, sends audible alarm when transfusion is near completion, reminds doctor And patient, kill two birds with one stone, above mentioned problem is readily solved.

Current venous transfusion is a kind of very common infusion method, and the speed control of the drop of venous transfusion is also very crucial.Now There is no equipment and material to detect decoction drop speed, be all rule of thumb to modulate pulley control woven hose cross-sectional area by doctor, so that Reach the purpose of control liquid medicine drop speed.

The content of the invention

In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of medical infusion solved the above problems Device warning system.

To achieve the above object, the invention provides following technical scheme：

A kind of medical Transfusion device warning system, including by monolithic processor controlled drop speed detection warning device, drop speed detection Warning device includes

Infrared opposite-radiation sensor for measuring liquid medicine dropleting speed；

Speed adjusting gear for controlling liquid medicine dropleting speed；

LED display for showing liquid medicine dropleting speed；

For the alarm to patient and nurse station prompting.

The present invention is further arranged to：The infrared opposite-radiation sensor includes infrared emitting sensor and infrared ray connects By sensor, both are all connected on woven hose, and the infrared light vertical irradiation that infrared emitting sensor is sent is in woven hose On section center line, when medicine water is dripped, infrared light occurs refraction and scattered, and infrared receiver sensor does not receive transmitting The infrared signal sent is held, the transmitting terminal of infrared emitting sensor produces a voltage jump, and passes through the voltage jump Measure liquid medicine dropleting speed.

The present invention is further arranged to：The speed adjusting gear includes fixed seat, stepper motor, screw rod and gear, described Fixed seat is connected on woven hose, and the gear, screw rod and stepper motor are placed in fixed seat, and gear is fixedly connected on step On the rotor of stepper motor, screw rod one end is engaged with gear, and the other end is elastic with the rotor rotation of stepper motor, steps up The speed that liquid medicine is dripped in woven hose, control woven hose.

The present invention is further arranged to：The speed adjusting gear includes chute, is provided with pulley in the chute, chute it is relative two Gathering sill, the angle of 30 °~45 ° of the bottom wall formation of gathering sill and chute, the pulley and gathering sill are offered on the inwall of side Sliding rolls connection, and woven hose is passed through between pulley and the bottom wall of chute.

The present invention is further arranged to：The single-chip microcomputer is AT89C52 single-chip microcomputers, and it is stored with 8 byte FLASH flash Device, 256 byte inner RAM, 32 I/O mouth lines, the timer and counter of 3 16, one 6 vectorial two-stage interrupts knot Structure, a full duplex serial communication port, piece internal oscillator and clock circuit.

The present invention is further arranged to：The timer is 555 timers.

The present invention is further arranged to：The alarm include Light-Emitting Diode and buzzer, the Light-Emitting Diode and Buzzer is connected with microcontroller communication.

By using above-mentioned technical proposal, using the monolithic processor controlled infusion alarmings of AT89C52, solve what transfusion terminated The problem of transfusion is completed can not be found in time.By warning reminding doctor patient, the pressure of doctors and nurses is reduced.Infrared light Wavelength is longer, and linear sensitivity preferably, on the function of human body without influence, is suitable for medical measurement.Based on single-chip computer AT89C52 The medical infusion flow monitoring of design, audible alarm, can be monitored in real time to transfusion situation, when there is flow velocity abnormal conditions and liquid Face has audible alarm when being less than warning value.Scattering and water droplet of the outer surface of liquid medicine water droplet to infrared light to infrared Absorption, It is the change of the detected signal value of infrared sensor reception pipe, and the amplitude fluctuations of signal is effectively handled, produces steady Fixed drop number signal；Infusing medicine water droplet speed is controlled by stepper motor, drop velocity modulation is more accurately carried out whole；Utilize luminous two Pole pipe and buzzer carry out sound and light alarm；Signal transacting is carried out by 555 timers；AT89C52 Single-chip Controllings are used, inside it EEPROM can preserve setting drop speed, information is not lost after power-off, so that the numerous of data need to be set by avoiding each device for opening Trivial work.Also, the present invention, which also has, takes the characteristics of resource is few and simple to operate.

Brief description of the drawings

Fig. 1 is the schematic diagram of speed adjusting gear embodiment in the present invention；

Fig. 2 is the circuit structure diagram of 555 timer embodiments in the present invention；

Fig. 3 detects the schematic diagram of embodiment for dropping liquid in the present invention.

In figure：1st, speed adjusting gear；11st, fixed seat；12nd, stepper motor；13rd, screw rod；14th, gear.

Embodiment

Medical Transfusion device warning system of the present invention is described further with embodiment referring to the drawings.

Speed adjusting gear 1 for controlling liquid medicine dropleting speed；

LED display for showing liquid medicine dropleting speed；

For the alarm to patient and nurse station prompting.

Infrared opposite-radiation sensor includes infrared emitting sensor and infrared ray receives sensor, and both are all connected to defeated In liquid pipe, the infrared light vertical irradiation that infrared emitting sensor is sent is on the section center line of woven hose, and infrared light is shone Cross dropper and do not have refraction effect, but when medicine water is dripped, infrared light occurs refraction and scattered, infrared receiver sensing Device does not receive the infrared signal that transmitting terminal is sent, and the transmitting terminal of infrared emitting sensor produces a voltage jump, and Liquid medicine dropleting speed is measured by the voltage jump.

Liquid medicine dropleting speed is determined by woven hose cross-sectional area.Speed adjusting gear 1 has two kinds of embodiments：

Embodiment 1

Speed adjusting gear 1 includes fixed seat 11, stepper motor 12, screw rod 13 and gear 14, and fixed seat 11 is connected to transfusion Guan Shang, the gear 14, screw rod 13 and stepper motor 12 are placed in fixed seat 11, and gear 14 is fixedly connected on stepper motor On 12 rotor, the one end of screw rod 13 is engaged with gear 14, and the other end is elastic with the rotor rotation of stepper motor 12, plus The speed that liquid medicine is dripped in tight woven hose, control woven hose.Single-chip Controlling stepper motor 12 is rotated, and is reached and is automatically controlled transfusion The dropleting speed of pipe inner liquid medicine.

Embodiment 2

Speed adjusting gear 1, which includes being provided with chute, the chute on pulley, the relative both sides inwall of chute, offers guiding Bottom wall 30 °~45 ° of the angle of formation of groove, gathering sill and chute, the pulley is connected with gathering sill sliding rolling, woven hose from Passed through between pulley and the bottom wall of chute.Pulley steps up to wear between pulley and the bottom wall of chute by the structure of directive wheel itself The woven hose crossed, reaches control woven hose inner liquid medicine dropleting speed manually.

Single-chip microcomputer is AT89C52 single-chip microcomputers, and AT89C52 provides following standard feature：8 byte FLASH flash memories, 256 byte inner RAM, 32 I/O mouth lines, the timer and counter of 3 16, one 6 vectorial two-stage interrupt structure, one Individual full duplex serial communication port, piece internal oscillator and clock circuit.Meanwhile, AT89C52 can be down to 0Hz static logic operation, And support two kinds of softwares optionally upper operation mode of economize on electricity.Idle mode stops CPU work, but allows RAM, timing/counting Device, serial communication port and interruption system work on.Power-down mode preserves the content in RAM, but oscillator is stopped and prohibited Only other all component workings are until next hardware reset.

Controller is that, for assuming unified command of the part being operated with control computer, it is by control logic, internal oscillator Circuit OSC, command register and its decoder, program counter PC and its incrementer, program address register, program status word (PSW) Register PSW, RAM address register, data pointer DPTR, stack pointer SP etc. are constituted.

The function and pin of AT89C52 single-chip microcomputers：

AT89C52 single-chip microcomputers are equipped with 40 pins, 32 outside bidirectional output/inputs（I/O）Port, while including 2 Individual outer middle fracture, 3 16 programmer timing counters, 2 full duplex serial communication ports, 2 mouth lines that can read and write, AT89C52 single-chip microcomputers can be conventionally programmed, can also online programming.Periphery is shown using two panels serial input Driving interface chip MAX7219, its hardware spending is small, and programming is simple.Duty parameter is used for using serial E2PROM 24LC01 Setting, after these parameter settings, point 3 regions storages in 24LC01, to take 2 modes to read in 3, to ensure accuracy. The selection of serial devices, the hardware of system is simple, and debugging is convenient.

Interrupt register：AT89C52 has 6 interrupt sources, and 2 interrupt priority levels, IE registers control each interrupt bit, IP Each of 6 interrupt sources can be set to 2 priority in register.

Timer/counter（T/C）.

Timing and tally function are selected by working method register TMOD.TMOD can only carry out byte manipulation, it is impossible to Bit addressing.

Position

D7

D6

D5

D4

D3

D2

D1

D0

Byte address

TMOD

GATE

C/T

M1

M0

GATE

C/T

M1

M0

89H

GATE：Gate control position.

During GATE=0, as long as software, which makes TR0 or TR1 put 1, can just start timer.

During GATE=1, only INT0 or INT1 pins are that after high level and TR0 or TR1 put 1 by software, could start regularly Device.

C/T：Timing or tally function selection position.During C/T=0, for timing.During C/T=1, for counting.

M1 and M0：T1 and T0 working mode selections position.Timer/counter has 4 kinds of working methods, is carried out by M1 and M0 Set

M1 M0	Working method	Function is selected
			00	Mode 0	13 bit timing devices/counter
01	Mode 1	16 bit timing devices/counter
			10	Mode 2	8 bit timing devices/counter
11	Mode 3	T0 is divided to for two independent 8 bit timing devices/counters.T1 now stops counting

AT89C52 singlechip interruption systems, interruption is CPU is suspended current work, goes to handle current disruption event, holds Go current interrupt service, return the process of original program.

Interrupt source is the event that interrupt requests are sent to CPU.

Timer is 555 timers.555 timers are a kind of multifunctional circuits simple to operate, cheap.555 Several simple Resistor-Capacitor Units can just constitute Schmidt trigger, monostable flipflop, multi-resonant in the external mounting of timer Device, the supply voltage wide scope that 555 timers are suitable for are swung, ambipolar 555 runs voltage is 5~16V.It can carry For the interface level with TTL and cmos digital circuit compatibility.555 timers can also export certain power, can drive micro- electricity Machine, indicator lamp, loudspeaker.

It is by voltage comparator C1 and C2（Including resitstance voltage divider）, G1 and G2 composition basic RS filpflop, colelctor electrode The electric discharge V of open circuit and the slow G3 of output take a walk and are grouped into.C1 and C2 is two voltage comparators, when CO ends are hanging, their base Quasi- voltage provides for Vcc after 3 5k electric resistance partial pressures.Ur1=2/3Vcc is comparator C1 reference voltage, TH（Threshold value is defeated Enter end) it is its input.Ur2=1/3Vcc is comparator C2 reference voltage, TR/(triggering input）For its input.CO For control end, as external fixed voltage Uco, then Ur1=Uco, Ur2=1/2Uco.Rd/ is directly sets to 0 end, as long as Rd/= 0, output uo is just low level, and during normal work, Rd/ ends are necessary for high level.

The driving of stepper motor 12 is controlled by control signal, and control signal is produced by AT89C52 single-chip microcomputers.Step The basic control principle of stepper motor 12 is as follows：

Commutation sequential control,

Stepper motor 12 is when he is powered, and phase can change, and this process is referred to as pulse distribution.Here in order to Explain convenient, for an example of three-phase stepper motor 12：He is triple time working method, the power-up sequence of each phase we be set as 1-2-3-4, so when energization, control pulse is accomplished by controlling 1,2,3,4 this 4 phases one by one according to power-up sequence UNICOM and disconnection.

The course changing control of stepper motor 12,

If forward sequence conversion phase is powered, stepper motor 12 will be rotated forward, if reverse sequence is powered If converting phase, then stepper motor 12 will be rotated backward.

The speed control of stepper motor 12,

When stepper motor 12 receives a control pulse, stepper motor 12 can then be rotated once, if receiving one again Pulse is controlled, it will be rotated once again.So if the time interval of two pulses received is small, stepper motor 12 speed rotated are exactly fast.As long as so the adjustment exomonental frequency of single-chip microcomputer, changes stepper motor 12 and receives pulse The frequency of signal, the rotating speed of stepper motor 12 just has corresponding change.

The main modular that transfusion monitoring system is wherein included has：Transfusion signal collecting unit, acousto-optic warning unit, electromechanical locks Dead unit, drop display unit, liquid level detection unit and SCM peripheral circuit etc..Transfusion signal collecting unit will be collected Signal is sent to single-chip microcomputer after shaping, the drop speed of the drop obtained by calculating is shown after being handled through single-chip microcomputer on keyboard, to adjust The rotating of whole control motor, realizes control drop speed.When reaching alarm preset value, buzzer ring, indicator lamp（Light-emitting diodes Pipe）It is bright.

Alarm realizes sound and light alarm only with a buzzer and a light emitting diode.When sensor detects medicine When liquid waterline can't detect liquid water drippage in 3 seconds less than setting value or sensor, AT89C52 single-chip microcomputers are issued by signal control Buzzer and LED operation processed, send sound and light alarm prompting medical personnel and patient.Light-Emitting Diode and buzzer are equal It is connected with microcontroller communication.

Stepper motor 12 is one of executive component for commonly using in electromechanical numerical control system.High precision, small volume, controlling party Just flexibly, obtained largely using in intelligence instrument and position control.The development of large scale integrated circuit and singlechip technology Rapid popularization, for design function is strong, the low-cost machine of stepper motor 12 control driver provides advanced technology and enough Resource.The design of stepper motor controller is introduced exemplified by the design shifting permanent magnetic step motor 12.

Stepping motor is divided into reaction equation, magneto, the class of permanent magnet induction formula 3 according to operation principle.With magneto stepping electricity Exemplified by motivation, the basic structure and operation principle of stepping motor are introduced.

The rotor of permanent-magnet stepping motor is made of permanent-magnet material, inherently one magnetic source of rotor, it defeated Go out torque big, performance of falling from power is good.There is location torque during power-off, consumption power is low；The series of rotor is identical with the series of nail, institute It is larger with step angle, start and running frequency is relatively low, and need positive negative pulse stuffing signal.But its corresponding phase sequence plus reversely around Group, avoids the need for negative pulse.Permanent-magnet stepping motor has four phases：A、B、C、D.

Working method has：

Single four clap：That is --- B --- C --- D orders are powered A；

Double four clap：That is --- BD --- CD --- DA orders are powered AB；

Eight clap：That is --- BB --- CC --- DD orders are powered AA.

The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims

1. a kind of medical Transfusion device warning system, it is characterized in that：Including by monolithic processor controlled drop speed detection warning device, the drop Speed detection warning device includes

Speed adjusting gear for controlling liquid medicine dropleting speed（1）；

LED display for showing liquid medicine dropleting speed；

For the alarm to patient and nurse station prompting.

2. medical Transfusion device warning system according to claim 1, it is characterized in that：The infrared opposite-radiation sensor includes Infrared emitting sensor and infrared ray receive sensor, and both are all connected on woven hose, and infrared emitting sensor is sent Infrared light vertical irradiation on the section center line of woven hose, when medicine water is dripped, infrared light occur refraction and scatter, it is red Outside line receives sensor and does not receive the infrared signal that transmitting terminal is sent, and the transmitting terminal of infrared emitting sensor produces one Voltage jump, and liquid medicine dropleting speed is measured by the voltage jump.

3. medical Transfusion device warning system according to claim 1, it is characterized in that：The speed adjusting gear（1）Including fixation Seat（11）, stepper motor（12）, screw rod（13）And gear（14）, the fixed seat（11）It is connected on woven hose, the tooth Wheel（14）, screw rod（13）And stepper motor（12）It is placed in fixed seat（11）It is interior, gear（14）It is fixedly connected on stepper motor （12）Rotor on, screw rod（13）One end and gear（14）Engagement, the other end is with stepper motor（12）Rotor rotate and it is preceding After stretch, step up woven hose, the speed that liquid medicine is dripped in control woven hose.

4. medical Transfusion device warning system according to claim 1, it is characterized in that：The speed adjusting gear（1）Including chute, It is provided with the chute on pulley, the relative both sides inwall of chute and offers gathering sill, 30 ° of the bottom wall formation of gathering sill and chute ~45 ° of angle, the pulley is rolled with gathering sill sliding and is connected, and woven hose is passed through between pulley and the bottom wall of chute.

5. medical Transfusion device warning system according to claim 1, it is characterized in that：The single-chip microcomputer is AT89C52 monolithics Machine, its have 8 byte FLASH flash memories, 256 byte inner RAM, 32 I/O mouth lines, the timer of 3 16 and Counter, one 6 vectorial two-stage interrupt structure, a full duplex serial communication port, piece internal oscillator and clock circuit.

6. medical Transfusion device warning system according to claim 5, it is characterized in that：The counter is 555 timers.

7. medical Transfusion device warning system according to claim 1, it is characterized in that：The alarm includes Light-Emitting Diode And buzzer, the Light-Emitting Diode and buzzer are connected with microcontroller communication.