CN202446581U - Automatic control device for dropping speed and physic liquor temperature of venous transfusion - Google Patents
Automatic control device for dropping speed and physic liquor temperature of venous transfusion Download PDFInfo
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- CN202446581U CN202446581U CN2012200137284U CN201220013728U CN202446581U CN 202446581 U CN202446581 U CN 202446581U CN 2012200137284 U CN2012200137284 U CN 2012200137284U CN 201220013728 U CN201220013728 U CN 201220013728U CN 202446581 U CN202446581 U CN 202446581U
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Abstract
The utility model relates to an automatic control device for dropping speed and physic liquor temperature of venous transfusion, and belongs to the field of auxiliary medical instruments. The automatic control device comprises a singlechip, a keyboard unit, a display unit, a physic liquor dropping speed detection unit, a dropping speed regulation unit, a physic liquor temperature detection unit and a physic liquor temperature regulation unit. According to the utility model, a STC89C52 singlechip is adopted to serve as a CPU (Central Processing Unit), an infrared photoelectric sensor is adopted to detect the dropping speed, the dropping speed is controlled through a stepping motor, and a PID (Proportion Integration Differentiation) control algorithm is adopted, so that the dropping speed regulation process has the advantages of accuracy in control, quickness in response and high sensitivity. In order to improve transfusion comfort, the automatic control device is added with a physic liquor heating function in design, is low in cost and high in cost performance.
Description
Technical field
This utility model relates to the auxiliary medical apparatus field, is specifically related to a kind of venous transfusion and drips speed and fluid temperature automaton.
Background technology
Intravenous injection is clinical treatment administering mode commonly used, and is along with the reach of science, also increasingly high to the requirement of medicine liquid droplet speed control system.Though tube for transfusion commonly used also can drip the control of speed in the medical science, regulate inaccurate, wayward, and the careless and inadvertent generation of Chang Yinwei blood backflow phenomenon, excessive velocities also can cause untoward reaction to patient sometimes.The venous transfusion device that present most hospital uses all is the Murphy's burette transfusion, and during patient infusion, transfusion device will be suspended on patient's overhead.This has the patient of strict demand to transfusion speed obviously is inconvenient, drips the inaccurate patient's life safety that also directly influences of speed simultaneously.Infusion pump commonly used at present is a kind of effective ways that solve transfusion speed, and its operation principle is power extruding transfusion, and amount of infusion is certain within a certain period of time, but drop number and inhomogeneous during the transfusion; And the consumables cost of infusion pump is very high, only is applicable to first aid and serious symptom situation, unsuitable popularizing.In order to satisfy the increasingly high requirement of medical institutions, provide a kind of not only practical but also cheap infusion test device imperative to transfusion speed and the control of amount of infusion accuracy.
The utility model content
In order to solve the problem that transfusion speed that prior art exists and amount of infusion can not accurately be controlled, this utility model provides a kind of venous transfusion to drip fast and fluid temperature automaton, and it is highly sensitive, and it is controlled to infuse, and cost is low.
The technical scheme that this utility model technical solution problem is taked is following:
Venous transfusion drips speed and the fluid temperature automaton comprises keyboard unit, medicine liquid droplet speed detecting unit, fluid temperature detecting unit, single-chip microcomputer, medicine liquid droplet velocity modulation joint unit, fluid temperature regulon and display unit; Said keyboard unit links to each other with single-chip microcomputer, and it is used to import medicine liquid droplet speed numerical value and the fluid temperature that presets, and a speed and the Temperature numerical that will preset send single-chip microcomputer to; Said medicine liquid droplet speed detecting unit links to each other with single-chip microcomputer, and it is used to detect the medicine liquid droplet speed of tube for transfusion, and sends detected medicine liquid droplet speed numerical value to single-chip microcomputer; Said fluid temperature detecting unit links to each other with single-chip microcomputer, and it is used to detect the fluid temperature of tube for transfusion, and sends detected fluid temperature numerical value to single-chip microcomputer; Said single-chip microcomputer links to each other with thermostat unit with medicine liquid droplet velocity modulation joint unit respectively; Single-chip microcomputer is used for detected medicine liquid droplet speed numerical value is compared with the medicine liquid droplet speed numerical value that presets; Judge whether medicine liquid droplet speed is reasonable, and send the instruction of medicine liquid droplet velocity modulation joint to medicine liquid droplet velocity modulation joint unit; Medicine liquid droplet velocity modulation joint unit is used to regulate the medicine liquid droplet speed in the tube for transfusion; Single-chip microcomputer also is used for detected fluid temperature numerical value is compared with the fluid temperature numerical value that presets simultaneously, judges whether fluid temperature is reasonable, and sends the thermoregulation instruction to the fluid temperature regulon; The fluid temperature regulon is used to regulate tube for transfusion inner liquid medicine temperature; Said display unit links to each other with single-chip microcomputer, and it is used to show the fluid temperature numerical value that presets the fast numerical value of medicine liquid droplet and preset by the keyboard unit input, and shows that the medicine liquid droplet speed that single-chip microcomputer receives detects numerical value and fluid temperature detection numerical value.
Above-mentioned single-chip microcomputer is the STC89C52 single-chip microcomputer; Medicine liquid droplet speed detecting unit is an infrared sensor.Described medicine liquid droplet velocity modulation joint unit is made up of motor and stepper motor driven lobe pump, and motor is by its rotating speed of PID controller control.Described fluid temperature detecting unit is the DS18B20 digital temperature sensor, and temperature-measuring range is-55 ℃～+ 125 ℃; Described fluid temperature regulon is a resistance wire.
The beneficial effect of this utility model is:
1, realized the automatic control of medicine liquid droplet speed; Not only can detect in real time and drip speed, can also change according to the patient body position, perhaps dry moving patient's anthropic factor changes the situation of dripping speed; Also can realize changing the situation of dripping speed, carry out automatic control and adjustment because liquid level descends; Adopt the PID closed loop controller, response speed is accelerated, control accuracy improves.
2, realize the control of fluid temperature, improved the level of comfort in the patient infusion process.
3, this system cost is low, and cost performance is high, is convenient to popularize.
Description of drawings
Fig. 1 is that this utility model venous transfusion drips speed and fluid temperature automaton theory diagram.
Fig. 2 is the infrared sensor circuit theory diagrams in this utility model.
Fig. 3 is the fluid temperature control circuit schematic diagram in this utility model.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is explained further details.
As shown in Figure 1, this utility model venous transfusion drips speed and the fluid temperature automaton comprises keyboard unit, medicine liquid droplet speed detecting unit, fluid temperature detecting unit, single-chip microcomputer, medicine liquid droplet velocity modulation joint unit, fluid temperature regulon and display unit.
Medicine liquid droplet speed detecting unit adopts infrared sensor to realize; Medicine liquid droplet velocity modulation joint unit adopts motor and lobe pump driven by stepper motors to realize; This part circuit is to be used for returning the speed detection of dripping of drop to compare with the speed of dripping of former setting; Single-chip microcomputer makes infusion set can keep the speed of setting of dripping through the rotating speed of pid algorithm adjustment motor then, does not change.
Pulse signal of the every input of motor, rotor just rotates an angle or takes a step forward, and the angular displacement of its output or displacement of the lines are directly proportional with the umber of pulse of input, and rotating speed is directly proportional with pulse frequency.Use the Single-chip Controlling motor, control signal is a digital signal, no longer needs D/A switch, but Rapid Realization start or stop, and step angle reduces for a short time, time-delay is short, accurate positioning, precision is high, and is workable.Through the rotating speed of control step rotating speed of motor and then control lobe pump, the rotating speed size of lobe pump has determined the speed of medicine liquid droplet speed.
The power of the light intensity that receives according to infrared sensor has judged whether that drop drips.Because infrared waves is longer than visible light, therefore receive the influence of visible light less.Adopt the scheme cost of infrared sensor low, circuit is simple, and does not receive the interference of visible light, good stability.Infrared sensor circuit theory diagrams as shown in Figure 2; As medicine liquid droplet following time; Because drop can hinder ultrared propagation, the infrared ray receiving terminal can not received infrared signal, and the output signal of receiving terminal will become high level; Pass through the signal shaping of Schmidt trigger again, level signal that can outputting standard.
In spring, autumn, infusion in winter process; A large amount of medicinal liquids directly gets into patient's blood vessel through transfusion device from external; On the low side because of fluid temperature, usually cause that cold extremities, numbness, pain appear in patient, sense of discomfort such as shiver, symptoms such as vasospasm can appear when serious.Adopting the purpose of fluid temperature detecting unit and fluid temperature regulon is exactly to let medicinal liquid that a suitable temperature is arranged, and makes the patient infusion process more comfortable, and the heating of this part and holding temperature are 20～30 ℃.
The temperature-control circuit of medicinal liquid is as shown in Figure 3, and the heating of medicinal liquid is belonged to low-temperature heat, can let patient feel comfortable and get final product, so select simple resistance wire heating for use, cost is low, realizes easily.Variation with digital temperature sensor DS18B20 detected temperatures; The temperature sensor temperature-measuring range is-55 ℃～+ 125 ℃, and precision is ± 0.5 ℃, can satisfy insulation and the heated perimeter and the precision of medicinal liquid fully; Its supply voltage is direct current 3～5.5V; Identical with the single-chip microcomputer supply voltage, can shared same power circuit, the power supply simplicity of design.
Display unit selects for use four LED charactrons to show a setting of speed and a real-time demonstration of dripping speed, and four buttons of keyboard unit employing are set and dripped a speed value, and cost is low, and hardware circuit is simple.
The operation principle that this utility model venous transfusion drips speed and fluid temperature automaton is: medicine liquid droplet speed numerical value and fluid temperature that the keyboard unit input is preset, and a speed and the Temperature numerical that will preset send single-chip microcomputer to; The medicine liquid droplet of medicine liquid droplet speed detection tube for transfusion is fast, and sends detected medicine liquid droplet speed numerical value to single-chip microcomputer; The fluid temperature of fluid temperature detection tube for transfusion, and send detected fluid temperature numerical value to single-chip microcomputer; Single-chip microcomputer is compared detected medicine liquid droplet speed numerical value with the medicine liquid droplet speed numerical value that presets; Judge whether medicine liquid droplet speed is reasonable; And sending the joint instruction of medicine liquid droplet velocity modulation to medicine liquid droplet velocity modulation joint unit, the medicine liquid droplet speed in the tube for transfusion is regulated in control medicine liquid droplet velocity modulation joint unit; Single-chip microcomputer is also compared detected fluid temperature numerical value with the fluid temperature numerical value that presets simultaneously; Judge whether fluid temperature is reasonable; And sending thermoregulation instruction to the fluid temperature regulon, control fluid temperature regulon is regulated tube for transfusion inner liquid medicine temperature; Display unit will by keyboard unit input preset medicine liquid droplet speed numerical value and the fluid temperature numerical value that presets, and the medicine liquid droplet speed that receives of single-chip microcomputer detects numerical value and shows with fluid temperature detection numerical value.
The venous transfusion of this utility model drips speed and the fluid temperature automaton can replace artificial the supervision to infuse; With control of chip microcontroller transfusion speed and demonstration in real time; Not only guaranteed the automatic control of injection speed, and realized of the real-time monitoring of long-range nurse station, alleviated nurse's working strength to a great extent severe case's administration; Bring great convenience will for patient and doctor, be the very high medical equipment of a kind of ratio of performance to price.
Claims (4)
1. venous transfusion drips speed and fluid temperature automaton, it is characterized in that: this device comprises keyboard unit, medicine liquid droplet speed detecting unit, fluid temperature detecting unit, single-chip microcomputer, medicine liquid droplet velocity modulation joint unit, fluid temperature regulon and display unit;
Said keyboard unit links to each other with single-chip microcomputer, and it is used to import medicine liquid droplet speed numerical value and the fluid temperature that presets, and a speed and the Temperature numerical that will preset send single-chip microcomputer to;
Said medicine liquid droplet speed detecting unit links to each other with single-chip microcomputer, and it is used to detect the medicine liquid droplet speed of tube for transfusion, and sends detected medicine liquid droplet speed numerical value to single-chip microcomputer;
Said fluid temperature detecting unit links to each other with single-chip microcomputer, and it is used to detect the fluid temperature of tube for transfusion, and sends detected fluid temperature numerical value to single-chip microcomputer;
Said single-chip microcomputer links to each other with thermostat unit with medicine liquid droplet velocity modulation joint unit respectively; Single-chip microcomputer is used for detected medicine liquid droplet speed numerical value is compared with the medicine liquid droplet speed numerical value that presets; Judge whether medicine liquid droplet speed is reasonable, and send the instruction of medicine liquid droplet velocity modulation joint to medicine liquid droplet velocity modulation joint unit; Medicine liquid droplet velocity modulation joint unit is used to regulate the medicine liquid droplet speed in the tube for transfusion; Single-chip microcomputer also is used for detected fluid temperature numerical value is compared with the fluid temperature numerical value that presets simultaneously, judges whether fluid temperature is reasonable, and sends the thermoregulation instruction to the fluid temperature regulon; The fluid temperature regulon is used to regulate tube for transfusion inner liquid medicine temperature;
Said display unit links to each other with single-chip microcomputer, and it is used to show the fluid temperature numerical value that presets the fast numerical value of medicine liquid droplet and preset by the keyboard unit input, and shows that the medicine liquid droplet speed that single-chip microcomputer receives detects numerical value and fluid temperature detection numerical value.
2. venous transfusion as claimed in claim 1 drips speed and fluid temperature automaton, and it is characterized in that: described single-chip microcomputer is the STC89C52 single-chip microcomputer; Medicine liquid droplet speed detecting unit is an infrared sensor.
3. venous transfusion as claimed in claim 1 drips speed and fluid temperature automaton, it is characterized in that: described medicine liquid droplet velocity modulation joint unit is made up of motor and stepper motor driven lobe pump, and motor is by its rotating speed of PID controller control.
4. venous transfusion as claimed in claim 1 drips speed and fluid temperature automaton, and it is characterized in that: described fluid temperature detecting unit is the DS18B20 digital temperature sensor, and temperature-measuring range is-55 ℃～+ 125 ℃; Described fluid temperature regulon is a resistance wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200137284U CN202446581U (en) | 2012-01-13 | 2012-01-13 | Automatic control device for dropping speed and physic liquor temperature of venous transfusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200137284U CN202446581U (en) | 2012-01-13 | 2012-01-13 | Automatic control device for dropping speed and physic liquor temperature of venous transfusion |
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| Publication Number | Publication Date |
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| CN202446581U true CN202446581U (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200137284U Expired - Fee Related CN202446581U (en) | 2012-01-13 | 2012-01-13 | Automatic control device for dropping speed and physic liquor temperature of venous transfusion |
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| CN (1) | CN202446581U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691018A (en) * | 2014-01-09 | 2014-04-02 | 上海理工大学 | Medical perfusion type irrigator |
| CN105935462A (en) * | 2016-04-12 | 2016-09-14 | 桂林航天工业学院 | Intravenous injection soup dripping speed control method and apparatus |
| CN111012971A (en) * | 2020-01-15 | 2020-04-17 | 重庆市涪陵中心医院 | Surgical drip injection protection nursing device |
-
2012
- 2012-01-13 CN CN2012200137284U patent/CN202446581U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691018A (en) * | 2014-01-09 | 2014-04-02 | 上海理工大学 | Medical perfusion type irrigator |
| CN105935462A (en) * | 2016-04-12 | 2016-09-14 | 桂林航天工业学院 | Intravenous injection soup dripping speed control method and apparatus |
| CN111012971A (en) * | 2020-01-15 | 2020-04-17 | 重庆市涪陵中心医院 | Surgical drip injection protection nursing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20130113 |