CN102872503A - Intravenous drip speed measurement circuit - Google Patents
Intravenous drip speed measurement circuit Download PDFInfo
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- CN102872503A CN102872503A CN2012103916260A CN201210391626A CN102872503A CN 102872503 A CN102872503 A CN 102872503A CN 2012103916260 A CN2012103916260 A CN 2012103916260A CN 201210391626 A CN201210391626 A CN 201210391626A CN 102872503 A CN102872503 A CN 102872503A
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- splicing ear
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Abstract
The invention provides an intravenous drip speed measurement circuit which comprises a power control circuit, a sensor circuit, a main controller, a display circuit and a Bluetooth communication circuit, and can be used for helping a nurse to conveniently, rapidly and accurately adjust the infusion speed and estimate the time when the dripping is finished. The intravenous drip speed measurement circuit is simple to use, high in reliability and strong in portability, can be carried by the nurse as auxiliary equipment and greatly reduces the purchase cost of a hospital. The circuit is provided with a Bluetooth communication module, thus being high in expansion performance and convenient in data communication with a smartphone, the internet and the like, and being convenient for the infusion intelligent management of the nurse.
Description
Technical field
The present invention relates to the medical matters care appliances, particularly a kind ofly measure intravenous drip speed, and have the circuit structure of the mancarried device of informationization and internet of things functional.
Background technology
Intravenous drip is the common medical procedure in hospital, clinic.Some the time doctor when writing a prescription, have special doctor's advice, the regulation medicinal liquid must be at a time drips off in the section.The nurse usually need to be by drawing the speed of intravenous drip to a stopwatch number number when giving patient infusion, thereby calculate the required time that drips off whole bottle liquid medicine.In order to raise the efficiency, have in the market the intravenous drip machine of automatization, the drip velocity of Automatic Control medicinal liquid.But this quasi-instrument price is high, and complicated operation often breaks down in the use and causes malpractice.The popularity rate of this quasi-instrument is not high, and most general hospitals can not use the equipment of these automatizatioies.
In view of this, develop a kind of portable intravenous drip speed measuring device, become a kind of demand of reality.
Summary of the invention
The object of the present invention is to provide a kind of intravenous drip tachometer circuit for portable intravenous drip speed measuring device, make nurse or other user measure easily the speed of intravenous drip, regulate in real time droping rate and calculate the time that drips off whole bottle liquid medicine, and a whole set of products is cheap, carry easily, operation is used easily, and reliability is high, and autgmentability is strong.
Technical scheme of the present invention is as follows:
A kind of intravenous drip tachometer circuit is made of power control circuit, sensor circuit, main controller and display circuit, bluetooth communication circuit;
Power control circuit comprises power supply control single chip computer and connected power switch key, indicator of the power supply status and metal-oxide-semiconductor, also comprises cell connection terminal; Described cell connection terminal is used for connecting battery; The state of described power supply control single chip computer monitoring power switch key, the break-make of control metal-oxide-semiconductor, for the remainder circuit provides main power, and control indicator of the power supply status display power supply state;
Sensor circuit comprises sensor single-chip microcomputer and connected red LED splicing ear and photoresistor splicing ear; Described red LED splicing ear is used for connecting red LED; Described photoresistor splicing ear is used for connecting photoresistor; Described sensor single-chip microcomputer by red LED splicing ear and photoresistor splicing ear collection instillation signal, has judged whether the drop drippage, and has sent a square-wave signal to the microcontroller of main controller circuit under the state that power control circuit is connected;
Main controller and display circuit comprise microcontroller and connected Capacity Selection/reset key and results verification/transmission data key, also comprise LCD display; The instillation signal that described microcontroller receiving sensor circuit is sent calculates and drips speed and time, and consequential signal is sent to the bluetooth module of bluetooth communication circuit; Monitor simultaneously the state of Capacity Selection/reset key and results verification/transmission data key, and menu and result data are presented on the LCD display of display circuit; Described LCD display is responsible for the demonstration of menu and result data under the control of microcontroller;
Bluetooth communication circuit comprises bluetooth module and connected burning program splicing ear, the first Bluetooth communication status indicator lamp and the second Bluetooth communication status indicator lamp, also comprises voltage transformation module; Described voltage transformation module is realized the conversion between 5V voltage and the 3.3V voltage; Described bluetooth module receives the consequential signal that the main controller circuit is sent, and with other external smart equipment networking communications; Control simultaneously the first Bluetooth communication status indicator lamp and the second Bluetooth communication status indicator lamp communication state displaying; Described burning program splicing ear (JP5) is used for writing the control information of Bluetooth communication.
Useful technique effect of the present invention is:
This main circuit will help nurse's fast and easy to debug accurately infusion rate, and estimates the complete time of dropping liquid.Adopt the package unit of this circuit to use simply, reliability is high, and is portable strong, can be used as nurse individual auxiliary facilities and carries with sound.For hospital, therefore purchase cost greatly reduces.This circuit because assembling bluetooth communication, scalability is strong, can easily with the data UNICOMs such as smart mobile phone, the Internet, make things convenient for nurse station transfusion intelligent management.This circuit adopts existing low-cost part fully, and a whole set of products is with low cost, and power supply uses common No. 7 batteries, and convenient various occasions are used.
The aspect that the present invention adds and advantage provide in the specific embodiment description partly below, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is the power supply control flow chart.
Fig. 3 is the operating sensor flow chart.
Fig. 4 is the main controller operational flow diagram.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
Circuit theory of the present invention as shown in Figure 1.See Fig. 1, main circuit of the present invention will be divided into four parts, is respectively power control circuit, sensor circuit, main controller and display circuit, bluetooth communication circuit.
First is power control circuit.Comprise power supply control single chip computer IC2 and connected power switch key S1, indicator of the power supply status LED3 and metal-oxide-semiconductor Q1, also comprise cell connection terminal JP1.Cell connection terminal JP1 is used for connecting battery.This circuit uses No. 7 alkaline batteries of three joints as power supply, and voltage range can steady operation in 4.8V～3.8V interval.After putting into battery, power supply control single chip computer IC2 just starts working.Power supply control single chip computer IC2 is 8 CMOS single-chip microcomputers of 8 pins based on flash memory of employing nanowatt technology, super low-power consumption, and the power of standby operation is in the nanowatt level, so battery power consumption under off-mode is minimum.The state of power supply control single chip computer IC2 monitoring power switch key S1, when power switch key S1 was pressed, power supply control single chip computer IC2 opened metal-oxide-semiconductor Q1, connected the main power of the circuit of remainder.When equipment was in without mode of operation after one minute, power supply control single chip computer IC2 auto-breaking is with economize on electricity.Indicator of the power supply status LED3 under the control of power supply control single chip computer IC2, the display power supply state.
Second portion is sensor circuit.Comprise sensor single-chip microcomputer IC3 and connected red LED splicing ear JP2 and photoresistor splicing ear JP3.Red LED splicing ear JP2 connects red LED, and photoresistor splicing ear JP3 connects photoresistor, both partner emitter and receptors.When power connection, sensor single-chip microcomputer IC3 starts working, signal by drop in red LED splicing ear JP2 and the photoresistor splicing ear JP3 collection Murphy tube between the two, whether automatic decision has the drop drippage, and sends a square-wave signal (2 feet of sensor single-chip microcomputer IC3) to the microcontroller IC1 of main controller circuit.
Third part is main controller and display circuit.Comprise microcontroller IC1 and connected Capacity Selection/reset key S2 and results verification/transmission data key S3, also comprise LCD display X1.The instillation signal that microcontroller IC1 receiving sensor circuit is sent calculates and drips speed and time, and consequential signal (signal1 and signal2) is sent to the bluetooth module IC6 of bluetooth communication circuit.Monitor simultaneously the state of Capacity Selection/reset key S2 and results verification/transmission data key S3, and menu and result data are presented on the LCD display X1 of display circuit.LCD display X1 is responsible for the demonstration of menu and result data under the control of microcontroller IC1.
The 4th part is bluetooth communication circuit.Comprise bluetooth module IC6 and connected burning program splicing ear JP5, the first Bluetooth communication status indicator lamp LED4 and the second Bluetooth communication status indicator lamp LED5, also comprise voltage transformation module IC7.Voltage transformation module IC7 realizes the conversion between 5V voltage and the 3.3V voltage.Bluetooth module IC6 receives the consequential signal that the main controller circuit is sent, and is responsible for and other external smart equipment networking communications.The first Bluetooth communication status indicator lamp LED4 and the second Bluetooth communication status indicator lamp LED5 under the control of bluetooth module IC6, communication state displaying.Burning program splicing ear JP5 is used for writing the control routine of Bluetooth communication.
The above components and parts is the commercial goods, and the marque in the embodiment of the invention can see table.
Table 1 main components inventory of the present invention
| Parts | Numerical value/model | Specification | Encapsulation |
| C1 | 100u | CPOL-EUE2-5 | E2-5 |
| C4 | 0.47u | C-EUC0805K | C0805K |
| C5 | 0.1u | C-EUC0805K | C0805K |
| IC1 | PIC16F84AP or PIC16F88I/P | PIC16F84AP or PIC16F88I/P | DIL18 |
| IC2 | PIC12F683SN | PIC12F683SN | SO-08 |
| IC3 | PIC12F683SN | PIC12F683SN | SO-08 |
| IC6 | HC-05 | HC-05 | HC05 |
| IC7 | The REG1117(voltage transitions) | REG1117 | SOT223 |
| JP1 | JP1E | JP1 | |
| JP2 | JP1E | JP1 | |
| JP3 | JP1E | JP1 | |
| JP5 | JP1E | JP1 | |
| LED3 | LEDCHIP-LED0805 | CHIP-LED0805 | |
| LED4 | LEDCHIPLED_0805 | CHIPLED_0805 | |
| LED5 | LEDCHIPLED_0805 | CHIPLED_0805 | |
| Q1 | N-HEXFET_SOT323-IRLL014N | N-HEXFET_SOT323-IRLL014N | SOT223 |
| R1 | 10k | R-EU_R0805W | R0805W |
| R2 | 100k | TRIM_US-PT-10 | PT-10 |
| R3 | 10k | R-EU_R0805W | R0805W |
| R4 | 10k | R-EU_R0805W | R0805W |
| R5 | 10k | R-EU_R0805W | R0805W |
| R6 | 10k | R-EU_R0805W | R0805W |
| R10 | 330 | R-EU_R0805W | R0805W |
| R11 | 330 | R-EU_R0805W | R0805W |
| R12 | 10k | R-EU_R0805W | R0805W |
| S1 | The RACON12(power switch key) | RACON12 | RACON12 |
| S2 | RACON12(Capacity Selection/reset key) | RACON12 | RACON12 |
| S3 | RACON12(affirmation/send key) | RACON12 | RACON12 |
| X1 | HD44780LCD-1602 | HD44780LCD-1602 | LCD1602 |
Based on foregoing description, workflow of the present invention is as follows:
One, power supply control flow.
As shown in Figure 2, behind the electrifying startup, power supply control single chip computer IC2 judges every the state of 10ms monitoring primary power source on ﹠ off switch S1 whether power switch key S1 is pressed.Be not pressed if monitor power switch key S1, then continue monitoring behind the dormancy 10ms; When monitoring power switch key S1 and be pressed, then control metal-oxide-semiconductor Q1 Switching power state.
Two, operating sensor flow process.
As shown in Figure 3, behind the electrifying startup, light the red LED that once is connected with red LED splicing ear JP2 every 1ms, gather the dropping liquid signal by the photoresistor that is connected with photoresistor splicing ear JP3, and send into sensor single-chip microcomputer IC3.In sensor single-chip microcomputer IC3, finish the sampling digital-to-analogue conversion, calculate the difference with last sampled result.And carry out overflow check, judge that whether above-mentioned difference is greater than the threshold value of setting.If not, then postpone resampling behind the 1ms; If then export square-wave signal to microcontroller IC1.
Three, main controller operational process.
As shown in Figure 4, behind the electrifying startup, LCD display X1 carries out the demonstration of log-on message and Capacity Selection menu.Microcontroller IC1 is with the timer zero clearing, and the state of monitoring Capacity Selection/reset key S2, judges whether Capacity Selection/reset key S2 is pressed.When monitoring Capacity Selection/when reset key S2 is pressed, then behind the change capacity with the timer zero clearing, be not pressed until in 5s, monitor Capacity Selection/reset key S2.This moment, the square wave of accumulative total sensor was counted 5s, calculated and dripped speed and video data.Count in the process at the accumulative total square wave, results verification/when transmission data key S3 was pressed, generation was interrupted, and calculated scheduled time and demonstration information when monitoring.The output data are to bluetooth module IC6.Reset when monitoring Capacity Selection/when reset key S2 is pressed, then finishing, again add up the square wave number.
Above-described only is preferred implementation of the present invention, the invention is not restricted to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive or associate under the prerequisite that does not break away from basic conception of the present invention, all should think to be included within protection scope of the present invention.
Claims (1)
1. an intravenous drip tachometer circuit is characterized in that: be made of power control circuit, sensor circuit, main controller and display circuit, bluetooth communication circuit;
Power control circuit comprises power supply control single chip computer (IC2) and connected power switch key (S1), indicator of the power supply status (LED3) and metal-oxide-semiconductor (Q1), also comprises cell connection terminal (JP1); Described cell connection terminal (JP1) is used for connecting battery; The state of described power supply control single chip computer (IC2) monitoring power switch key (S1), the break-make of control metal-oxide-semiconductor (Q1), for the remainder circuit provides main power, and control indicator of the power supply status (LED3) display power supply state;
Sensor circuit comprises sensor single-chip microcomputer (IC3) and connected red LED splicing ear (JP2) and photoresistor splicing ear (JP3); Described red LED splicing ear (JP2) is used for connecting red LED; Described photoresistor splicing ear (JP3) is used for connecting photoresistor; Described sensor single-chip microcomputer (IC3) is under the state that power control circuit is connected, gather the instillation signal by red LED splicing ear (JP2) and photoresistor splicing ear (JP3), judge whether the drop drippage, and sent a square-wave signal to the microcontroller (IC1) of main controller circuit;
Main controller and display circuit comprise microcontroller (IC1) and connected Capacity Selection/reset key (S2) and results verification/transmission data key (S3), also comprise LCD display (X1); The instillation signal that described microcontroller (IC1) receiving sensor circuit is sent calculates and drips speed and time, and consequential signal is sent to the bluetooth module (IC6) of bluetooth communication circuit; Monitor simultaneously the state of Capacity Selection/reset key (S2) and results verification/transmission data key (S3), and menu and result data are presented on the LCD display (X1) of display circuit; Described LCD display (X1) is responsible for the demonstration of menu and result data under the control of microcontroller (IC1);
Bluetooth communication circuit comprises bluetooth module (IC6) and connected burning program splicing ear (JP5), the first Bluetooth communication status indicator lamp (LED4) and the second Bluetooth communication status indicator lamp (LED5), also comprises voltage transformation module (IC7); Described voltage transformation module (IC7) is realized the conversion between 5V voltage and the 3.3V voltage; Described bluetooth module (IC6) receives the consequential signal that the main controller circuit is sent, and with other external smart equipment networking communications; Control simultaneously the first Bluetooth communication status indicator lamp (LED4) and the second Bluetooth communication status indicator lamp (LED5) communication state displaying; Described burning program splicing ear (JP5) is used for writing the control information of Bluetooth communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103916260A CN102872503A (en) | 2012-10-15 | 2012-10-15 | Intravenous drip speed measurement circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103916260A CN102872503A (en) | 2012-10-15 | 2012-10-15 | Intravenous drip speed measurement circuit |
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| CN102872503A true CN102872503A (en) | 2013-01-16 |
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| CN2012103916260A Pending CN102872503A (en) | 2012-10-15 | 2012-10-15 | Intravenous drip speed measurement circuit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321461A (en) * | 1980-04-18 | 1982-03-23 | K/W/D Associates | Flow rate monitor and totalizer with count display |
| US4786800A (en) * | 1984-12-11 | 1988-11-22 | Baxter International Inc. | Fluid drop detection and discrimination system |
| CN201572396U (en) * | 2009-12-31 | 2010-09-08 | 重庆理工大学 | Bluetooth wireless transmission-based transfusion monitoring device |
| CN201959345U (en) * | 2010-11-18 | 2011-09-07 | 周洪勇 | Intelligent infusion controller |
| CN202909210U (en) * | 2012-10-15 | 2013-05-01 | 无锡市第三人民医院 | Intravenous drip velocity measurement circuit |
-
2012
- 2012-10-15 CN CN2012103916260A patent/CN102872503A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321461A (en) * | 1980-04-18 | 1982-03-23 | K/W/D Associates | Flow rate monitor and totalizer with count display |
| US4786800A (en) * | 1984-12-11 | 1988-11-22 | Baxter International Inc. | Fluid drop detection and discrimination system |
| CN201572396U (en) * | 2009-12-31 | 2010-09-08 | 重庆理工大学 | Bluetooth wireless transmission-based transfusion monitoring device |
| CN201959345U (en) * | 2010-11-18 | 2011-09-07 | 周洪勇 | Intelligent infusion controller |
| CN202909210U (en) * | 2012-10-15 | 2013-05-01 | 无锡市第三人民医院 | Intravenous drip velocity measurement circuit |
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Application publication date: 20130116 |