CN106693113A - Transfusion monitoring alarm - Google Patents
Transfusion monitoring alarm Download PDFInfo
- Publication number
- CN106693113A CN106693113A CN201611198170.0A CN201611198170A CN106693113A CN 106693113 A CN106693113 A CN 106693113A CN 201611198170 A CN201611198170 A CN 201611198170A CN 106693113 A CN106693113 A CN 106693113A
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- China
- Prior art keywords
- pin
- drop
- alarm
- electric capacity
- circuit module
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
Abstract
The invention discloses a transfusion monitoring alarm. The transfusion monitoring alarm is provided with a murphy's dropper and an alarm clamping body; and the alarm clamping body wraps the murphy's dropper. The transfusion monitoring alarm is characterized in that a terminal node control device is arranged in the alarm clamping body and comprises an alarm circuit module, a charging circuit module, a liquid drop terminal micro-processing module, a detecting circuit module and a switch circuit module; the alarm circuit module, the detecting circuit module and the switch circuit module are respectively connected with the liquid drop terminal micro-processing module; the liquid drop terminal micro-processing module supplies power via the charging circuit module; and power supply of the alarm circuit module, power supply the detecting circuit module and power supply of the switch circuit module are managed in a unified manner through the liquid drop terminal micro-processing module. By the structure, the transfusion monitoring alarm has the advantages of novel structure, convenience in use, low power consumption of equipment, high acquisition precision, high antijamming capability and the like.
Description
Technical field
The present invention relates to technical field of medical equipment, specifically a kind of infusion monitoring alarm.
Background technology
It is well known that venous transfusion is one of conventional means among Hospital medical, with current medical resource all the more
Anxiety, the several nurses on duty of center transfusion room of a large hospital often will simultaneously manage over hundreds of patients, it is necessary to monitor institute
There is the transfusion condition of patient such as whether there is blood coagulation, drop is stopped, and transfusion speed is too fast, if situations such as transfusion terminates, particularly
When infusion-completed, if medical personnel do not take disposal in time, easily there is air formation air embolism and jeopardize patients ' lives.Together
When, hospital ward is often that room is set and area big bed in ward is more, and it is not enough that nurse makes an inspection tour dynamics, such as occur nobody accompany and attend to and
The patient that can not be taken care of oneself, also occurs above dangerous situation.
Through retrieval, CN2010101217169 discloses a kind of infuse method for real-time monitoring and infusion real-time monitoring device
Patent of invention, it includes the step of carrying out weight detecting to the infusion bottle or infusion bag that install liquid medicine, and the step is included to transfusion
The weight of bottle or infusion bag is bound, and judges the volume specification of infusion bottle or infusion bag, and to the infusion bottle of the volume specification
Or the weight of infusion bag is preset；It also includes alarming step, i.e., when the gross weight of detected infusion bottle or infusion bag
Remove after the weight of default infusion bottle or infusion bag remaining liquid nt wt net weight automatic alarm when entering pre-set interval.This hair
The bright volume specification that infusion bottle or infusion bag just can be automatically defined after infusion bag is hung up, and by the defeated of the volume specification
The weight of liquid bottle or infusion bag is preset, and the judgement of remaining liquid nt wt net weight is carried out, so as to complete alarm procedure.This device
Substantive deficiency be：Because the electric signal that infrared sensor is collected is needed by that after hardware circuit filtering process, could obtain
To required information, therefore, equipment power dissipation is big, and signal intensity is weak, frequency deviation is big, antijamming capability is weak, acquisition precision is low.
The content of the invention
It is an object of the invention to solve the deficiencies in the prior art, there is provided a kind of structure is novel, easy to use, equipment power dissipation
Low, acquisition precision is high, strong antijamming capability infusion monitoring alarm.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of infusion monitoring alarm, is provided with Murphy type burette and alarm cramping body, and alarm is coated with the Murphy type burette
Cramping body, it is characterised in that the alarm clamping is provided with terminal node control device, the terminal node control device bag in vivo
Include warning circuit module, charging circuit module, drop terminal micro treatment module, detection circuit module and on-off circuit module, institute
Warning circuit module, detection circuit module and on-off circuit module is stated to be connected with drop terminal micro treatment module respectively, it is described
The charged circuit module of drop terminal micro treatment module is powered, and warning circuit mould is managed collectively by drop terminal micro treatment module
The power supply of block, detection circuit module and on-off circuit module, to reach the effect that structure is novel, easy to use, acquisition precision is high.
Drop terminal micro treatment module of the present invention is by electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C10, electric capacity
C11, chip U1 and crystal oscillator Y1, Y2 constitute MCU work systems, and the electric capacity C3 is responsible for the in-line power voltage stabilizing of chip U1, electric capacity
C1, C2, crystal oscillator Y1 constitute external source crystal oscillation system I, supply the standard concussion frequency of 32.768K, electric capacity C10, C11, crystal oscillator Y2 structures
Into external source crystal oscillation system II, the standard concussion frequency of 32M is supplied；The electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, inductance
L1, inductance L2, inductance L3 and inductance L4 constitute the match circuit of balun, adjust the impedance matching of transmitting antenna, and signal is via PCB
Antenna E1 launches and receives, to reach the effect of strong antijamming capability.
Detection circuit of the present invention includes infrared transmitter and infrared radiation receiving circuit, the Murphy type burette one
The alarm clamping of side is provided with infrared transmitter in vivo, and the alarm clamping of opposite side is provided with infrared radiation receiving circuit, makes in vivo
Infrared transmitter forms to penetrating to gather the drop information in Murphy type burette, the infrared ray with infrared radiation receiving circuit
Radiating circuit includes NPN triode Q1, infrared transmitting tube D2, resistance R3 and resistance R1, and the infrared radiation receiving circuit includes electricity
Resistance R2, infrared receiving tube D1 and electric capacity C4, the colelctor electrode of the triode Q1 meets VCC and powers, when the base stage of triode Q1 meets P10
When pin is high level, the transmitting extremely high voltage of Q1, electric current is conducted to infrared transmitting tube D2, infrared transmitting tube via resistance R3
D2 works, and launches infrared ray, and resistance R2 connects with infrared receiving tube D1 and connect respectively by VCC and GND two ends, works as infrared receiving tube
When the infra-red intensity that D1 is received is different, its own resistance changes, and its K pole connects P07 pins, and carries out AD by MCU
Conversion sampling, judges data, and electric capacity C4 is filter capacitor, suppresses the end peak surge voltage that D1 is produced, to reach acquisition precision
Effect high.
Warning circuit of the present invention is made up of resistance R6, NPN triode Q2 and buzzer LS1, NPN
Triode Q2 base stages connect P11 mouthfuls, penetrate level and connect the positive pin of buzzer, another termination VCC of colelctor electrode connecting resistance R6, resistance R6, when
When P11 is high level, NPN triode Q2 conductings, electric current sends alarm by buzzer, buzzer startup work.
Switch voltage-stabilizing circuit of the present invention is made up of chip U2, resistance R8, LED diode D4 and foot control S1 high, high
Foot control one terminates anode, and the pin of a termination U2 chips the 3rd, the pin of U2 chips the 1st ground connection, the 2nd pin connects D4 positive poles,
D4 negative pole connecting resistance R8, the R8 other end are grounded；When foot control high is closed, the pins of U2 the 3rd are turned on anode, are obtained
Highest 3.7V voltages, through itself DC-DC voltage stabilizing, obtain 3.3V voltages, are externally supplied as VCC, are drawn by second
Pin is exported；Now second pin is high potential, drives LED normal works, and LED lights, and indicates system worked well.
Charging circuit of the present invention is by USB interface USB1, chip U3, electric capacity C12, resistance R5, R7, light emitting diode
D3 is constituted, and when USB interface connects external source USB plug, the 1st pin of USB interface is 5V high level, and the 5th pin of USB interface is ground electricity
Position, the 1st pin of USB interface USB1 connects the pin of chip U3 the 4th, and the 5th pin of USB interface USB1 connects the 2nd pin of chip U2, chip U2's
The indirect resistance R7 of the 2nd pin and the 5th pin, R7 control programming charging current；3rd pin and the 4th of electric capacity C2 access chips U3
Between pin, pressure stabilization function is played, the positive pole of battery connects the 4th pin such as chip, negative pole ground connection；4th pin of resistance R5 access chips U3,
Other end sending and receiving optical diode positive pole, the negative pole ground connection of light emitting diode D3；When USB plug is accessed, the 4th pin of chip U3 is
5V voltages, 5V voltages constitute a path via R5 and D3, and under the driving of electric current, light emitting diode D3 work is luminous, plays
Indicate the effect charged；Chip U3 starts work when the 4th pin is 5V high level, and the 3rd pin output 4.2V voltages, electric current is big
Small by the 5th pin, size of current is controlled over the ground, i.e., controlled by R5 resistances size, completes being polymerized to the pin of access chip the 4th and the 2nd pin
The charge function of thing battery.
Battery of the present invention is 3.7V lithium battery power supplies, and effective operating time was significantly reduced up to 20 hours with reaching
The effect of power consumption.
The MCU of the drop terminal micro treatment module of the present invention uses the CC2540 of TI companies.
The monitoring algorithm of drop terminal micro treatment module of the present invention includes transfusion speed timekeeping system and alarm timer
System, using thresholding filtering and forgetting algorithm treatment, its step is the algorithm of the transfusion speed timekeeping system：Infrared tube is adopted
Collect Murphy type burette and the diffusing reflection of liquid drippage and the signal of refraction effect and be converted to electric signal, drop terminal microprocessor mould
Fluctuation is 0.1-0.3V to block up and down under charging circuit electric power thus supplied, that is, voltage change is detected for 2-8%, due to each drop
All there is an impact end peak in signal, for the treatment of this signal using directly signal is AD converted, by what is collected
Electric signal numerical value amplifies, and sets two threshold values, and when higher limit is broken through, mark position TRUE indicates when breaking through lower limit
Position FALSE, when flag bit by converting twice, is designated as detecting a drop；If detecting the end peak impact of signal, root
Compared according to the timestamp information of drop, judge drop frequency, the drop information less than intervals is omitted；
The algorithm steps of the alarm timer system are：When often detecting drop signal on drop terminal micro treatment module, alarm
Flag bit resets, and timekeeping system two resets；And by setting alarm duration, when long-time can't detect drop signal, timing
Two timing of system alarm duration more than setting long, warning mark position is hung up, and driven by program warning circuit module sends alarm
Information；When drop signal is detected again, resetted by warning mark position, can sounded all clear；
The algorithm steps of the drop terminal micro treatment module are：Drop terminal micro treatment module when drop signal is detected,
Interception time is stabbed, and compares last timestamp, calculates the time difference QUOTE between two drop signals , and ask for phase
The average value QUOTE of ten adjacent drop interval times , and there is following equation to draw transfusion speed：
QUOTE （Formula 3）
And the total amount information that will infuse is encapsulated into drop terminal micro treatment module with No. ID of transfusion speed and terminal node, with
It is easy to be inquired about by PC ends monitoring system and mobile phone terminal monitoring system, enables doctor or nurse or entourage by described
PC ends monitoring system and mobile phone terminal monitoring system monitor in real time transfusion state, significantly improve the security of patient.
The present invention due to using said structure, with structure it is novel, easy to use, equipment power dissipation is low, acquisition precision is high, anti-
The advantages of interference performance is strong.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the upward view of Fig. 1.
Fig. 3 is the electrical schematic diagram of terminal node control device in the present invention.
Fig. 4 is the detection circuit module electrical schematic diagram in Fig. 3.
Fig. 5 is warning circuit modular electrical schematic diagram in Fig. 3.
Fig. 6 is drop terminal micro treatment module electrical schematic diagram in Fig. 3.
Fig. 7 is Fig. 3 breaker in middle circuit module electrical schematic diagrams.
Fig. 8 is power supply circuit modular electrical schematic diagram in Fig. 3.
Reference：Left cramping body 1, right cramping body 2, hinge 3, torsion spring 9, warning circuit module 4, charging circuit module 5,
Drop terminal micro treatment module 6, detection circuit module 7, on-off circuit module 8.
Specific embodiment
The present invention will be described below in conjunction with the accompanying drawings.
As shown in drawings, a kind of infusion monitoring alarm, is provided with Murphy type burette and alarm cramping body, the luxuriant Fei Shi
Alarm cramping body is coated with dropper, the alarm cramping body can be using left cramping body and right cramping body through hinge and torsion spring phase
The mode of connection is clamped to Murphy type burette, it would however also be possible to employ the mode of socket is enclosed within Murphy type burette, can also be adopted
It is fixed on Murphy type tube with the mode of cladding Murphy type burette, can be using a left side present invention preferably employs the alarm cramping body
Cramping body 1 is clamped through the mode that hinge 3 is connected with torsion spring 9 with right cramping body 2 to Murphy type burette, to reach user
Just effect, the alarm clamping is provided with terminal node control device in vivo, and the terminal node control device includes alarm electricity
Road module 4, charging circuit module 5, drop terminal micro treatment module 6, detection circuit module 7 and on-off circuit module 8, the report
Alert circuit module 4, detection circuit module 7 and on-off circuit module 8 are connected with drop terminal micro treatment module 6 respectively, described
The charged circuit module 5 of drop terminal micro treatment module 6 is powered, and alarm electricity is managed collectively by drop terminal micro treatment module 6
The power supply of road module 4, detection circuit module 7 and on-off circuit module 8, to reach, structure is novel, easy to use, acquisition precision is high
Effect.
Drop terminal micro treatment module 6 of the present invention is by electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C10, electric capacity
C11, chip U1 and crystal oscillator Y1, Y2 constitute MCU work systems, and the electric capacity C3 is responsible for the in-line power voltage stabilizing of chip U1, electric capacity
C1, C2, crystal oscillator Y1 constitute external source crystal oscillation system I, supply the standard concussion frequency of 32.768K, electric capacity C10, C11, crystal oscillator Y2 structures
Into external source crystal oscillation system II, the standard concussion frequency of 32M is supplied；The electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, inductance
L1, inductance L2, inductance L3 and inductance L4 constitute the match circuit of balun, adjust the impedance matching of transmitting antenna, and signal is via PCB
Antenna E1 launches and receives, to reach the effect of strong antijamming capability.
Detection circuit 7 of the present invention includes infrared transmitter and infrared radiation receiving circuit, the Murphy type burette
The alarm clamping of side is provided with infrared transmitter in vivo, and the alarm clamping of opposite side is provided with infrared radiation receiving circuit in vivo,
Infrared transmitter is set to be formed to penetrating to gather the drop information in Murphy type burette with infrared radiation receiving circuit, it is described infrared
Line radiating circuit includes NPN triode Q1, infrared transmitting tube D2, resistance R3 and resistance R1, and the infrared radiation receiving circuit includes
Resistance R2, infrared receiving tube D1 and electric capacity C4, the colelctor electrode of the triode Q1 meet VCC and power, when the base stage of triode Q1 connects
When P10 pins are high level, the transmitting extremely high voltage of Q1, electric current is conducted to infrared transmitting tube D2, infrared hair via resistance R3
Pipe D2 work is penetrated, launches infrared ray, resistance R2 connects with infrared receiving tube D1 and connect respectively by VCC and GND two ends, hot external
When the infra-red intensity that closed tube D1 is received is different, its own resistance changes, and its K pole connects P07 pins, and is carried out by MCU
AD conversion is sampled, and judges data, and electric capacity C4 is filter capacitor, suppresses the end peak surge voltage that D1 is produced, to reach collection
The effect of high precision.
Warning circuit of the present invention 4 is made up of resistance R6, NPN triode Q2 and buzzer LS1, NP
N triode Q2 base stages connect P11 mouthfuls, penetrate level and connect the positive pin of buzzer, another termination VCC of colelctor electrode connecting resistance R6, resistance R6, when
When P11 is high level, NPN triode Q2 conductings, electric current sends alarm by buzzer, buzzer startup work, reaches automatic
The effect of alarm
Switch voltage-stabilizing circuit of the present invention 8 is made up of chip U2, resistance R8, LED diode D4 and foot control S1 high, and pin high is opened
Close one and terminate anode, the pin of a termination U2 chips the 3rd, the pin of U2 chips the 1st ground connection, the 2nd pin connects D4 positive poles, and D4 bears
Pole connecting resistance R8, R8 other end ground connection；When foot control high is closed, the pins of U2 the 3rd are turned on anode, obtain highest
3.7V voltages, through itself DC-DC voltage stabilizing, obtain 3.3V voltages, are externally supplied as VCC, defeated by second pin
Go out；Now second pin is high potential, drives LED normal works, and LED lights, and indicates system worked well.
Charging circuit of the present invention 5 is by USB interface USB1, chip U3, electric capacity C12, resistance R5, R7, light-emitting diodes
Pipe D3 is constituted, and when USB interface connects external source USB plug, the 1st pin of USB interface is 5V high level, and the 5th pin of USB interface is ground
Current potential, the 1st pin of USB interface USB1 connects the pin of chip U3 the 4th, and the 5th pin of USB interface USB1 connects the 2nd pin of chip U2, chip U2
The 2nd pin and the 5th pin indirect resistance R7, R7 control programming charging current；3rd pin of electric capacity C2 access chips U3 and
Between 4 pin, pressure stabilization function is played, the positive pole of battery connects the 4th pin such as chip, negative pole ground connection；The 4th of resistance R5 access chips U3
Pin, other end sending and receiving optical diode positive pole, the negative pole ground connection of light emitting diode D3；When USB plug is accessed, the 4th of chip U3 the
Pin is 5V voltages, and 5V voltages constitute a path via R5 and D3, and under the driving of electric current, light emitting diode D3 work is luminous,
Play a part of to indicate to charge；Chip U3 starts work, the 3rd pin output 4.2V voltages, electricity when the 4th pin is 5V high level
By the 5th pin, size of current is controlled stream size over the ground, i.e., controlled by R5 resistances size, is completed to the pin of access chip the 4th and the 2nd pin
The charge function of polymer battery.
Battery of the present invention is 3.7V lithium battery power supplies, and effective operating time was significantly reduced up to 20 hours with reaching
The effect of power consumption.
The MCU of the drop terminal micro treatment module of the present invention uses the CC2540 of TI companies.
The monitoring algorithm of drop terminal micro treatment module 6 of the present invention includes transfusion speed timekeeping system and alarm timer
System, using thresholding filtering and forgetting algorithm treatment, its step is the algorithm of the transfusion speed timekeeping system：Infrared tube is adopted
Collect Murphy type burette and the diffusing reflection of liquid drippage and the signal of refraction effect and be converted to electric signal, drop terminal microprocessor mould
Fluctuation is 0.1-0.3V to block up and down under charging circuit electric power thus supplied, that is, voltage change is detected for 2-8%, due to each drop
All there is an impact end peak in signal, for the treatment of this signal using directly signal is AD converted, by what is collected
Electric signal numerical value amplifies, and sets two threshold values, and when higher limit is broken through, mark position TRUE indicates when breaking through lower limit
Position FALSE, when flag bit by converting twice, is designated as detecting a drop；If detecting the end peak impact of signal, root
Compared according to the timestamp information of drop, judge drop frequency, the drop information less than intervals is omitted；
The algorithm steps of the alarm timer system are：When often detecting drop signal on drop terminal micro treatment module, alarm
Flag bit resets, and timekeeping system two resets；And by setting alarm duration, when long-time can't detect drop signal, timing
Two timing of system alarm duration more than setting long, warning mark position is hung up, and driven by program warning circuit module sends alarm
Information；When drop signal is detected again, resetted by warning mark position, can sounded all clear；
The algorithm steps of the drop terminal micro treatment module are：Drop terminal micro treatment module when drop signal is detected,
Interception time is stabbed, and compares last timestamp, calculates the time difference QUOTE between two drop signals , and ask for
The average value QUOTE of ten adjacent drop interval times , and there is following equation to draw transfusion speed：
QUOTE （Formula 3）
And the total amount information that will infuse is encapsulated into drop terminal micro treatment module with No. ID of transfusion speed and terminal node, with
It is easy to be inquired about by PC ends monitoring system and mobile phone terminal monitoring system, enables doctor or nurse or entourage by described
PC ends monitoring system and mobile phone terminal monitoring system monitor in real time transfusion state, significantly improve the security of patient.
The present invention when in use, can be connected with the short monitoring systems of PC and mobile phone terminal monitoring system, be monitored when PC ends are received
When system poll is instructed, the packet in drop terminal micro treatment module is to be uploaded to PC ends monitoring system, and doctor passes through PC ends
Patient cases' information of input in monitoring system, and connect effective on reading terminals node one by one by the way of poll inquiry
Information, it is complete no more than by 5ms, i.e., 1 second to single terminal node device connection reading information to the time for disconnecting
Into 100 information gatherings of terminal node, efficient quick.
When being inquired about in mobile phone terminal monitoring system, the mobile phone terminal monitoring system is received on drop terminal micro treatment module
Each drop timestamp and drop total amount in the packet of biography, and calculate transfusion speed, transfusion liquid surplus, infuse surplus
The remaining time, whether drip and stop and information about power, enable doctor or nurse or entourage by the mobile phone terminal monitoring system
Monitor in real time transfusion state.
When operating voltage is detected less than 3.3V, the low information of electricity is uploaded to by drop terminal micro treatment module
PC ends monitoring system in PC host computers, the low alarm of electricity is sent to PC host computers, points out medical personnel to change battery.
The present invention due to using said structure, with structure it is novel, easy to use, equipment power dissipation is low, acquisition precision is high, anti-
The advantages of interference performance is strong.
Claims (9)
1. a kind of infusion monitoring alarm, is provided with Murphy type burette and alarm cramping body, and report is coated with the Murphy type burette
Alert cramping body, it is characterised in that the alarm clamping is provided with terminal node control device, the terminal node control device in vivo
Including warning circuit module, charging circuit module, drop terminal micro treatment module, detection circuit module and on-off circuit module,
The warning circuit module, detection circuit module and on-off circuit module are connected with drop terminal micro treatment module respectively, institute
State the drop charged circuit module of terminal micro treatment module to power, warning circuit is managed collectively by drop terminal micro treatment module
The power supply of module, detection circuit module and on-off circuit module.
2. a kind of infusion monitoring alarm according to claim 1, it is characterised in that the drop terminal micro treatment module
It is that, by electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C10, electric capacity C11, chip U1 and crystal oscillator Y1, Y2 constitute MCU work systems,
The electric capacity C3 is responsible for the in-line power voltage stabilizing of chip U1, and electric capacity C1, C2, crystal oscillator Y1 constitute external source crystal oscillation system I, supply
The standard concussion frequency of 32.768K, electric capacity C10, C11, crystal oscillator Y2 constitute external source crystal oscillation system II, supply the standard concussion of 32M
Frequency；The electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, inductance L1, inductance L2, inductance L3 and inductance L4 constitute balun
With circuit, the impedance matching of transmitting antenna is adjusted, signal is launched and received via PCB antenna E1.
3. a kind of infusion monitoring alarm according to claim 1, it is characterised in that the detection circuit includes infrared ray
Radiating circuit and infrared radiation receiving circuit, the alarm clamping of the Murphy type burette side are provided with infrared transmitter in vivo,
The alarm clamping of opposite side is provided with infrared radiation receiving circuit in vivo, infrared transmitter is formed right with infrared radiation receiving circuit
Penetrate to gather the drop information in Murphy type burette, the infrared transmitter includes NPN triode Q1, infrared transmitting tube
D2, resistance R3 and resistance R1, the infrared radiation receiving circuit include resistance R2, infrared receiving tube D1 and electric capacity C4, three pole
The colelctor electrode of pipe Q1 meets VCC and powers, when the base stage of triode Q1 connects P10 pins for high level, the transmitting extremely high voltage of Q1,
Electric current is conducted to infrared transmitting tube D2 via resistance R3, and infrared ray is launched in infrared transmitting tube D2 work, and resistance R2 connects with infrared
Closed tube D1 series connection connects by VCC and GND two ends respectively, when the infra-red intensity that infrared receiving tube D1 is received is different, its own
Resistance changes, and its K pole connects P07 pins, and is AD converted sampling by MCU, judges data, and electric capacity C4 is filtered electrical
Hold, suppress the end peak surge voltage that D1 is produced.
4. a kind of infusion monitoring alarm according to claim 1, it is characterised in that the warning circuit is by resistance R
6th, NPN triode Q2 and buzzer LS1 is constituted, and NPN triode Q2 base stages connect P11 mouthfuls, penetrate level and connecing buzzer just
Pin, another termination VCC of colelctor electrode connecting resistance R6, resistance R6, when P11 is high level, NPN triode Q2 conductings, electric current warp
Buzzer is crossed, buzzer startup work sends alarm.
5. a kind of infusion monitoring alarm according to claim 1, it is characterised in that the switch voltage-stabilizing circuit is by chip
U2, resistance R8, LED diode D4 and foot control S1 high are constituted, the termination anode of foot control high, a termination U2 chips the 3rd
Pin, the pin of U2 chips the 1st ground connection, the 2nd pin connects D4 positive poles, D4 negative pole connecting resistance R8, the R8 other end ground connection；When pin high
During switch closure, the pins of U2 the 3rd are turned on anode, obtain highest 3.7V voltages, through itself DC-DC voltage stabilizing, are obtained
3.3V voltages are obtained, is externally supplied as VCC, exported by second pin；Now second pin is high potential, is driving LED just
Often work, LED lights, and indicates system worked well.
6. a kind of infusion monitoring alarm according to claim 1, it is characterised in that the charging circuit is by USB interface
USB1, chip U3, electric capacity C12, resistance R5, R7, light emitting diode D3 composition, when USB interface connects external source USB plug, USB connects
1st pin of mouth is 5V high level, and the 5th pin of USB interface is ground potential, and the 1st pin of USB interface USB1 connects the pin of chip U3 the 4th,
5th pin of USB interface USB1 connects the 2nd pin of chip U2, the 2nd pin of chip U2 and the indirect resistance R7 of the 5th pin, R7 control programming
Charging current；Between 3rd pin and the 4th pin of electric capacity C2 access chips U3, pressure stabilization function is played, the positive pole of battery is connect such as chip
The 4th pin, negative pole ground connection；4th pin of resistance R5 access chips U3, other end sending and receiving optical diode positive pole, light emitting diode D3
Negative pole ground connection；When USB plug is accessed, the 4th pin of chip U3 is 5V voltages, and 5V voltages constitute one and lead to via R5 and D3
Road, under the driving of electric current, light emitting diode D3 work is luminous, plays a part of to indicate to charge；Chip U3 is that 5V is high in the 4th pin
During level, start work, the 3rd pin output 4.2V voltages, size of current is hindered by the size of current control over the ground of the 5th pin by R5
Value size control, completes to the pin of access chip the 4th and the charge function of the polymer battery of the 2nd pin.
7. a kind of infusion monitoring alarm according to claim 6, it is characterised in that the battery is that 3.7V lithium batteries are supplied
Electricity.
8. a kind of infusion monitoring alarm according to claim 2, it is characterised in that the drop terminal microprocessor
The MCU of module uses the CC2540 of TI companies.
9. a kind of infusion monitoring alarm according to claim 2, it is characterised in that the drop terminal micro treatment module
Monitoring algorithm include transfusion speed timekeeping system and alarm timer system, the algorithm of the transfusion speed timekeeping system uses door
Limit filtering and forgetting algorithm are processed, and its step is：Infrared tube gathers the diffusing reflection and refraction of Murphy type burette and liquid drippage
The signal of effect is simultaneously converted to electric signal, and fluctuation is 0.1- to drop terminal micro treatment module up and down under charging circuit electric power thus supplied
0.3V, that is, detect voltage change for 2-8%, all there is an impact end peak due to each drop signal, for this signal
Using directly signal is AD converted, the electric signal numerical value that will be collected amplifies for treatment, and sets two threshold values, works as breakthrough
During higher limit, mark position TRUE, mark position FALSE when breaking through lower limit when flag bit by converting twice, are designated as detection
To a drop；If detecting the end peak impact of signal, the timestamp information according to drop is compared, and judges drop frequency, small
It is omitted in the drop information of intervals；
The algorithm steps of the alarm timer system are：When often detecting drop signal on drop terminal micro treatment module, alarm
Flag bit resets, and timekeeping system two resets；And by setting alarm duration, when long-time can't detect drop signal, timing
Two timing of system alarm duration more than setting long, warning mark position is hung up, and driven by program warning circuit module sends alarm
Information；When drop signal is detected again, resetted by warning mark position, can sounded all clear；
The algorithm steps of the drop terminal micro treatment module are：Drop terminal micro treatment module when drop signal is detected,
Interception time is stabbed, and compares last timestamp, calculates the time difference between two drop signals, and ask for adjacent ten
The average value of drop interval time, and there is following equation to draw transfusion speed：
（Formula 3）
And the total amount information that will infuse is encapsulated into drop terminal micro treatment module with No. ID of transfusion speed and terminal node.
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| CN108538021A (en) * | 2018-06-14 | 2018-09-14 | 龚怡宁 | Passive type high-tension switch cabinet charges acoustic-optic alarm |
| CN110989437A (en) * | 2019-12-03 | 2020-04-10 | 湖南小枰建材有限责任公司 | Infusion monitor circuit, device and monitoring method |
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Application publication date: 20170524 |