CN111437463A - Infrared detection infusion state reminding method and infrared infusion reminder - Google Patents
Infrared detection infusion state reminding method and infrared infusion reminder Download PDFInfo
- Publication number
- CN111437463A CN111437463A CN202010281606.2A CN202010281606A CN111437463A CN 111437463 A CN111437463 A CN 111437463A CN 202010281606 A CN202010281606 A CN 202010281606A CN 111437463 A CN111437463 A CN 111437463A
- Authority
- CN
- China
- Prior art keywords
- infrared
- infusion
- liquid medicine
- infrared receiving
- receiving diode
- Prior art date
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000001802 infusion Methods 0.000 title claims description 98
- 239000007788 liquid Substances 0.000 claims abstract description 73
- 239000003814 drug Substances 0.000 claims abstract description 57
- 238000012544 monitoring process Methods 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 16
- 230000008859 change Effects 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims description 34
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000035945 sensitivity Effects 0.000 abstract description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 229940079593 drug Drugs 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- 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
- A61M5/1684—Monitoring, detecting, signalling or eliminating infusion flow anomalies by detecting the amount of infusate remaining, e.g. signalling end of infusion
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to an infrared detection transfusion state reminding method and an infrared transfusion reminder, wherein an infrared detection is adopted to collect a liquid state voltage signal in a transfusion tube and send the liquid state voltage signal into a single chip microcomputer for monitoring and judgment, the infrared light emitting tube and an infrared receiving tube are both in a linear working area to form a reliable working window through the change of PWM (pulse width modulation) waveform duty ratio output by the single chip microcomputer, the single chip microcomputer monitors the load output voltage V of the infrared receiving tube in real time and judges whether liquid medicine exists in the transfusion tube or not according to the load output voltage V, and a system alarms when the liquid medicine does not exist in the transfusion tube. The reminder comprises infrared signal acquisition module, signal processing module, alarm module and power, and signal processing module's input is connected with infrared signal acquisition module's output, and the output is connected with alarm module's input. The method has the advantages of scientific method, simple structure, high sensitivity, reliability, safety, wide adaptability, low cost, practicality, convenience and the like.
Description
Technical Field
The invention relates to an infrared detection infusion state reminding method and an infrared infusion reminder, and belongs to the technical field of medical appliances.
Background
At present, when infusion treatment is carried out in a medical institution, the infusion process needs to be monitored manually, and when liquid infusion is finished, an infusion channel is closed in time to prevent air from entering blood vessels and avoid causing injury to human bodies. Due to the fact that infusion time is long (generally, one-time infusion time is more than one hour), the number of patients and the like, staff of medical institutions cannot monitor all patients at the same time, so that the task is often handed to the patients or family members of the patients to execute, and accidents often occur because most of the patients and the family members are not professional and fatigue is easily caused due to long-time monitoring.
In response to this problem, some infusion monitoring and alarming technologies have been studied and used. The common technology adopts a capacitance induction type, and has the defects of poor adaptability and poor reliability; the visible light system or weighing system is adopted to monitor the liquid medicine state in the liquid conveying pipe, and the problems of poor reliability, large influence by environmental change, high cost and the like exist. For example, the accuracy and reliability of visible light detection may be affected by the color of different liquid medicines, and weighing monitoring may result in increased costs, etc. Therefore, there is a need to propose a more reliable and cost-effective method and apparatus.
Disclosure of Invention
The invention aims to solve the technical problems of low reliability, poor adaptability, high cost and the like in the prior art, and provides an infrared detection transfusion state reminding method and an infrared transfusion reminder.
In order to solve the technical problem, the invention provides an infrared detection transfusion state reminding method, which adopts an infrared signal acquisition mode, the infrared emitting diode D1 and the infrared receiving diode D2 which are clamped at the two sides of the transfusion pipeline at the upper part of the dropping funnel of the transfusion device collect the liquid medicine state voltage signals in the transfusion tube and send the signals to the singlechip for monitoring and judging, the emitting power of the infrared emitting diode D1 is adjusted through the change of the PWM waveform duty ratio output by the singlechip, the load output voltage V of the infrared receiving diode D2 is changed synchronously, then the infrared emitting diode D1 and the infrared receiving diode D2 are both in a linear working area to form a reliable working window, the load output voltage V of the infrared receiving diode D2 is monitored by the singlechip in real time, and judging whether the liquid medicine exists in the infusion tube or not according to the change of the V value, and giving an alarm by the system when the liquid medicine does not exist in the infusion tube.
When the real-time monitoring is carried out and the change of the load output voltage V value of the infrared receiving diode D2 is used as a basis to judge whether liquid medicine exists in an infusion tube or not, a control threshold voltage Vp = [ (V1 + V2)/2 + β ] is set, wherein V1 is the load output voltage value of D2 when liquid medicine exists in the infusion tube, V2 is the load output voltage value of D2 when no liquid medicine exists in the infusion tube, β is the saturation voltage drop of D2, β =0.7, the system detects the load output voltage V of the infrared receiving diode D2 in real time, when V Vp is larger than or equal to the liquid medicine existing in the infusion tube, when V is smaller than Vp, the fact that no liquid medicine exists in the infusion tube is judged, and the system gives an alarm.
When the load output voltage V of the infrared receiving diode D2 is monitored in real time, the difference between the load output voltage value V1 of the D2 when liquid medicine exists in the infusion pipeline and the load output voltage value V2 of the D2 when no liquid medicine exists in the infusion pipeline is controlled, so that the maximum difference Vmax of V2-V1 is not larger than (= (Vcc-0.7)) × 40%, wherein Vcc is the system power supply voltage.
When the voltage signal of the liquid medicine state in the infusion tube is monitored and judged, the intermittent mode is adopted, one period is continuously monitored at intervals of 800-1000ms, each monitoring period is continuously carried out for 100ms, and the detection and comparison judgment are completed once every 0.5 ms.
The invention also provides an infrared infusion reminder for implementing the infrared detection infusion state reminding method, which comprises an infrared signal acquisition module 1, a signal processing module 2, an alarm module 3 and a power supply Vcc, wherein the input end of the signal processing module 2 is electrically connected with the output end of the infrared signal acquisition module 1, and the output end of the signal processing module is electrically connected with the input end of the alarm module 3; the infrared signal acquisition module 1 consists of an infrared emitting diode D1, an infrared receiving diode D2, a first resistor R1, a third resistor R3, a first capacitor C1 and a third capacitor C3, wherein the cathode of the infrared emitting diode D1 is connected with the output end of the single chip microcomputer through the first resistor R1 and the first capacitor C1, the anode of the infrared receiving diode D2 is connected with the input end of the single chip microcomputer through the third resistor R3 and the third capacitor C3, and the infrared emitting diode D1 and the infrared receiving diode D2 are respectively connected with the first resistor R1, the first capacitor C1, the third resistor R3 and the third capacitor C3 in a mixed mode and then connected with a power supply Vcc; the signal processing module 2 adopts a single chip microcomputer, the alarm module 3 adopts a buzzer BZ, and an infrared emitting diode D1 and an infrared receiving diode D2 of the infrared signal acquisition module 1 are arranged on two sides of an infusion pipeline on the upper part of the dropping funnel of the infusion apparatus in a clamping manner.
A second resistor R2 and a second capacitor C2 are further connected between the negative electrode of the infrared emitting diode D1 of the signal acquisition module 1 and the output end of the single chip microcomputer, and a second resistor R2 and a second capacitor C2 are further connected between the infrared emitting diode D1 and a power supply Vcc in a mixed mode. Namely, the cathode of the infrared emitting diode D1 is connected with the output end of the single chip microcomputer through a first resistor R1, a first capacitor C1, a second resistor R2 and a second capacitor C2, and the infrared emitting diode D1 and the infrared receiving diode D2 are connected with the power supply Vcc after being connected with the first resistor R1, the first capacitor C1, the second resistor R2, the second capacitor C2, the third resistor R3 and the third capacitor C3 in a mixed manner.
And the two ends of the buzzer BZ of the alarm module 3 are also connected with a light emitting diode D3 and a fourth resistor R4 in parallel, so that the alarm module can give out sound alarm and give out light alarm at the same time, and the alarm effect is enhanced.
The single chip microcomputer is an 8-bit single chip microcomputer with AD conversion (such as STC15W, STC12C5A60S2 and the like), the infrared emitting diode D1 and the infrared receiving diode D2 are correspondingly and respectively arranged on the inner sides of two clamping arms of the infusion tube clamp 4, the two clamping arms are clamped on an upper infusion tube of the infusion set dropping funnel through the infusion tube clamp 4, and the inner sides of the two clamping arms of the infusion tube clamp 4 are provided with circular grooves matched with the infusion tube.
The single chip microcomputer monitors and judges the liquid medicine state in the infusion tube through the load output voltage V of the infrared receiving tube D2, detects the load output voltage value V1 of D2 when liquid medicine exists in the infusion tube, detects the load output voltage value V2 of D2 when no liquid medicine exists in the infusion tube, and when the threshold voltage Vp = [ (V1 + V2)/2 +0.7] is controlled, the single chip microcomputer judges that no liquid medicine exists in the infusion tube, drives the alarm circuit to work and alarm, and outputs an acousto-optic prompt signal.
The single chip microcomputer adopts a power-off mode/shutdown mode, continuously works for a period at intervals of 800-1000ms, each working period takes 100ms, detection is completed on the load output voltage of the infrared receiving diode D2 every 0.5ms, after 900ms, the single chip microcomputer automatically wakes up after the power-off wake-up timer is full, and enters the next monitoring cycle until the monitored voltage value is lower than the set control threshold voltage Vp.
The load output voltage value V1 of D2 when liquid medicine exists in the infusion pipeline and the load output voltage value V2 of D2 when no liquid medicine exists in the infusion pipeline can be preset by system pre-inspection before formal use or preset before products are sold on the market. Aiming at different liquid medicines, the singlechip adaptively and automatically adjusts the duty ratio of the output PWM waveform, changes the transmitting power of the infrared emitting diode D1, changes the voltage V on the load resistor R2 of the infrared receiving diode D2, and then enables the D1 and the D2 to work in a linear region, thereby ensuring the monitoring precision and reliability.
The singlechip adopts a power-down mode/shutdown mode to save electric energy, prolong the service time of a power supply and improve the power supply guarantee capability of system work. The single chip microcomputer and all the components are made of common commercial products, and the single chip microcomputer is provided with a power-down awakening timer. The system adopts the lithium cell power supply, has sufficient linear work area for guaranteeing infrared device, can adopt lithium cell charging protection to rise the clamp plate, both can use the android mobile phone charger to charge to the device, also can use the treasured that charges to the device power supply when necessary, improves the flexibility of using. The working voltage of the system power supply Vcc is generally 2.5-5.5V, when the voltage of the battery is lower than the rated working voltage and needs to be charged, the device can give out sound and light prompting signals.
The working principle of the invention is as follows: by means of infrared emitting and infrared receiving tubes clamped on two sides of an infusion pipeline on the upper portion of a dropping funnel of an infusion apparatus, a reliable working window is formed by utilizing linear working areas of an infrared emitting diode and an infrared receiving diode, and liquid medicine state voltage signals in an infusion tube are collected and sent to a signal processing system for monitoring and judging. The positive pole of infrared transmitting tube and the negative pole of infrared receiving tube are connected in power Vcc, and the filter that infrared emitting diode D1's negative pole passes through R1, C1 and constitutes is connected with the PWM output of singlechip, and load R2 and be connected with the input of singlechip are connected to infrared receiving diode D2's positive pole, constitute infrared detection signal acquisition module. When the duty ratio of the PWM waveform outputted from the computer is changed, the emitting power of the ir emitting diode D1 is changed, so that the load output voltage V of the ir receiving diode D2 is also changed. By adjusting the duty ratio of the PWM, both D1 and D2 can be operated in the linear region.
Through a large amount of experiments, when liquid exists in the holding clamp infusion pipeline and no liquid exists in the holding clamp infusion pipeline, the maximum difference value of the load output voltage of D2 in the linear region is determined as follows: vmax = (V1-V2), where V1 is the voltage across the D2 load when liquid is in the line and V2 is the voltage across the D2 load when no liquid is in the line.
Meanwhile, the control threshold voltage may be determined as: vp = (V1 + V2)/2 +0.7, where Vp is the threshold voltage, and 0.7 is the saturation voltage drop of D2, taking the median of V1 and V2.
Through trial and error, Vmax was about (Vcc-0.7). times.40%.
When V is larger than Vp, the liquid medicine in the pipeline can be judged; when V is less than Vp, it can be judged that no liquid medicine is in the pipeline.
The invention can adjust the emission power of the infrared emission diode D1 through the change of the duty ratio of the PWM waveform output by the singlechip, so that the load output voltage V of the infrared receiving diode D2 is changed synchronously, and then D1 and D2 are both in a linear working area to form a reliable working window, thereby having strong adaptability to infusion sets with different colors, liquids with different colors, and the change of ambient light and temperature. When the system starts working, the system can automatically adjust to adapt to the working environment without manual intervention, and can normally work as long as the test clamp is clamped and the power supply is switched on; if the working environment is changed during detection (such as the liquid with different colors is replaced), the system can be adaptively adjusted only by turning off the power supply and then turning on the power supply again, so that the system is in a normal working state. If the clamping method is incorrect in the using process, a buzzer is caused to alarm and remind, the clamping can be correct again after the machine is turned off, and the machine can be used after the machine is turned on again.
The infrared emitting diode and the infrared receiving diode are installed according to the principle of direct projection, near distance and sealing: the working surfaces of the infrared emitting diode and the infrared receiving diode are oppositely arranged on the same straight line, the distance between the working surfaces of the infrared emitting diode and the infrared receiving diode is only the diameter of the infusion catheter, and the rest parts are all in a light-tight state except the contact parts of the working surfaces of the infrared emitting diode and the infrared receiving diode and the infusion catheter, so that the infrared emitting diode can work in a linear region, has higher sensitivity, and can reduce the influence of environmental light and different liquid medicines on the device.
The method of the invention is scientific, simple in structure, practical and convenient, can be widely suitable for various transfusion systems, liquid medicines and environmental changes such as temperature, light and the like, has the advantages of reliable and safe operation, high sensitivity, low cost and the like, and can also be used for detecting the state of liquid objects in other transparent pipelines.
Drawings
Fig. 1 is a schematic diagram of an output characteristic curve (output voltage of the infrared receiving diode changes along with the output PWM duty ratio of the single chip microcomputer) of the infrared receiving diode according to the present invention.
FIG. 2 is a circuit diagram of the present invention.
Fig. 3 is a schematic view of the infusion tube clip of the present invention.
In the figure, the device comprises a 1-infrared signal acquisition module, a 2-signal processing module, a 3-alarm module, a 4-infusion tube clamp, a Vcc-power supply, a D1-infrared emitting diode, a D2-infrared receiving diode, a D3-light emitting diode, a C1-first capacitor, a C2-second capacitor, a C3-third capacitor, an R1-first resistor, an R2-second resistor, an R3-third resistor, an R4-fourth resistor and a BZ-buzzer.
Detailed Description
The following detailed description of the embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein the technology and products not shown in the embodiments are all conventional products available in the art or commercially.
Example 1: as shown in fig. 1-3, the infrared detection transfusion state reminding method adopts an infrared signal acquisition mode, the infrared emitting diode D1 and the infrared receiving diode D2 which are clamped at the two sides of the transfusion pipeline at the upper part of the dropping funnel of the transfusion device collect the liquid medicine state voltage signals in the transfusion tube and send the signals to the singlechip for monitoring and judging, the emitting power of the infrared emitting diode D1 is adjusted through the change of the PWM waveform duty ratio output by the singlechip, the load output voltage V of the infrared receiving diode D2 is changed synchronously, then the infrared emitting diode D1 and the infrared receiving diode D2 are both in a linear working area to form a reliable working window, the load output voltage V of the infrared receiving diode D2 is monitored by the singlechip in real time, and judging whether the liquid medicine exists in the infusion tube or not according to the change of the V value, and giving an alarm by the system when the liquid medicine does not exist in the infusion tube.
When the change of a load output voltage V value of an infrared receiving diode D2 is monitored in real time and the liquid medicine in an infusion tube is judged according to the change of the load output voltage V value of the infrared receiving diode D2, a control threshold voltage Vp = [ (V1 + V2)/2 + β ] is set, wherein V1 is the load output voltage value of D2 when the liquid medicine is in the infusion tube, V2 is the load output voltage value of D2 when the liquid medicine is not in the infusion tube, β is the saturation voltage drop of D2, β =0.7, the system detects the load output voltage V of the infrared receiving diode D2 in real time, when V is not less than Vp, the liquid medicine in the infusion tube is judged, when V is less than Vp, the liquid medicine in the infusion tube is judged, and the system.
When the load output voltage V of the infrared receiving diode D2 is monitored in real time, the difference value between the load output voltage value V1 of D2 when liquid medicine exists in the infusion pipeline and the load output voltage value V2 of D2 when no liquid medicine exists in the infusion pipeline is controlled, so that the maximum difference value Vmax = (Vcc-0.7) × 40% of V2-V1 is 40%, wherein Vcc is the system power supply voltage in the formula, when monitoring and judging liquid medicine state voltage signals in the infusion pipeline, an intermittent mode is adopted, one period is continuously monitored every 900ms, 100ms is continuously monitored every monitoring period, and detection and comparison judgment are completed every 0.5 ms.
The infrared infusion reminder for implementing the infrared detection infusion state reminding method consists of an infrared signal acquisition module 1, a signal processing module 2, an alarm module 3 and a power supply Vcc, wherein the input end of the signal processing module 2 is electrically connected with the output end of the infrared signal acquisition module 1, and the output end of the signal processing module is electrically connected with the input end of the alarm module 3; the infrared signal acquisition module 1 consists of an infrared emitting diode D1, an infrared receiving diode D2, a first resistor R1, a first capacitor C1, a second resistor R2, a second capacitor C2, a third resistor R3 and a third capacitor C3, wherein the cathode of the infrared emitting diode D1 is connected with the output end of the single-chip microcomputer IC through a first resistor R1, a first capacitor C1, a second resistor R2 and a second capacitor C2, the anode of the infrared receiving diode D2 is connected with the input end of the single-chip microcomputer IC through a third resistor R3 and a third capacitor C3, and the infrared emitting diode D1 and the infrared receiving diode D2 are connected with a first resistor R1, a first capacitor C1, a second resistor R2, a second capacitor C2, a third resistor R3 and a third capacitor C3 in a mixed mode and then connected with a power supply Vcc; the signal processing module 2 adopts a singlechip; the alarm module 3 adopts a buzzer BZ, and two ends of the buzzer BZ are connected with a light emitting diode D3 and a fourth resistor R4 in parallel; the infrared emitting diode D1 and the infrared receiving diode D2 of the infrared signal acquisition module 1 are clamped on two sides of an infusion pipeline on the upper part of the dropping funnel of the infusion apparatus.
The single chip microcomputer adopts an STC15W 8-bit single chip microcomputer with AD conversion, an infrared emitting diode D1 and an infrared receiving diode D2 are correspondingly and respectively arranged at the inner sides of two clamping arms of the infusion tube clamp 4, the infusion tube clamp 4 clamps the infusion tube on the upper part of the dropping funnel of the infusion apparatus, and the inner sides of the two clamping arms of the infusion tube clamp 4 are provided with circular grooves matched with the infusion tube. The single chip microcomputer monitors and judges the liquid medicine state in the infusion tube through the load output voltage V of the infrared receiving tube D2, detects the load output voltage value V1 of D2 when liquid medicine exists in the infusion tube, detects the load output voltage value V2 of D2 when no liquid medicine exists in the infusion tube, and when the threshold voltage Vp = [ (V1 + V2)/2 +0.7] is controlled, the single chip microcomputer judges that no liquid medicine exists in the infusion tube, drives the alarm circuit to work and alarm, and outputs an acousto-optic prompt signal. The single chip microcomputer adopts a power-off mode/shutdown mode, continuously works for a period every 900ms, the time of each working period is 100ms, the load output voltage of the infrared receiving diode D2 is detected once every 0.5ms, after 900ms, the single chip microcomputer automatically wakes up after the power-off wake-up timer is full to enter the next monitoring cycle until the monitored voltage value is lower than the set control threshold voltage Vp, so that the electric energy is saved, the service time of a power supply is prolonged, and the power supply guarantee capability of the system work is improved.
The system is by 3V lithium cell power supply to adopt 134N3P lithium cell charging protection board 5V liter clamp plate, both can use the android mobile phone charger to charge to the device, also can use the treasured that charges to the device power supply when necessary, improve the flexibility of using. When the voltage of the battery is lower than the rated working voltage and needs to be charged, the device can also send out an audible and visual prompt signal.
Example 2: as shown in fig. 1-3, the process of the infrared detection infusion state reminding method and the structure of the infrared infusion reminder are the same as those in embodiment 1, one period is continuously monitored at intervals of 800ms, but the signal acquisition module 1 is not provided with the second resistor R2 and the second capacitor C2, the single chip microcomputer IC adopts an 8-bit single chip microcomputer with STC12C5a60S2 and AD conversion, and the system is powered by a 2.5V lithium battery.
Example 3: as shown in fig. 1 to 3, the process of the infrared detection infusion state reminding method and the structure of the infrared infusion reminder are the same as those in embodiment 1, one period is continuously monitored every 1000ms, but the system is not provided with a light emitting diode D3 and a fourth resistor R4 (no light prompt is performed during alarm), the single chip microcomputer IC adopts an 8-bit single chip microcomputer with STC12C5a60S2 and AD conversion, and the system is powered by a 5.5V lithium battery.
While the present invention has been described with reference to the accompanying drawings, it is to be understood that the invention is not limited thereto, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An infrared detection infusion state reminding method is characterized in that: adopts an infrared signal acquisition mode, acquires liquid medicine state voltage signals in a liquid conveying pipe through an infrared emitting diode (D1) and an infrared receiving diode (D2) which are clamped at two sides of a liquid conveying pipeline at the upper part of a dropping funnel of the liquid conveying device and sends the liquid medicine state voltage signals to a singlechip for monitoring and judging, the emitting power of the infrared emitting diode (D1) is adjusted through the change of the PWM waveform duty ratio output by the singlechip, the load output voltage V of the infrared receiving diode (D2) is changed synchronously, then the infrared emitting diode (D1) and the infrared receiving diode (D2) are both in a linear working area to form a reliable working window, the load output voltage V of the infrared receiving diode (D2) is monitored by the singlechip in real time, and judging whether the liquid medicine exists in the liquid conveying pipe or not according to the change of the voltage V value, and giving an alarm by the system when the liquid medicine does not exist in the liquid conveying pipe.
2. The infrared detection transfusion state reminding method as claimed in claim 1, wherein the real-time monitoring is performed, and when the change of the load output voltage V value of the infrared receiving diode (D2) is used as a basis to judge whether liquid medicine exists in the transfusion tube or not, a control threshold voltage Vp = [ (V1 + V2)/2 + β ] is set, wherein V1 is the load output voltage value of the infrared receiving diode (D2) when liquid medicine exists in the transfusion tube, V2 is the load output voltage value of the infrared receiving diode (D2) when liquid medicine does not exist in the transfusion tube, β is the saturation voltage drop of the infrared receiving diode (D2) and β =0.7, the system detects the load output voltage V of the infrared receiving diode (D2) in real time, when V is larger than or equal to Vp, the system judges that liquid medicine exists in the transfusion tube, and when V is smaller than Vp, the system alarms and prompts.
3. The infrared detection transfusion state reminding method of claim 1 or 2, wherein when the load output voltage V of the infrared receiving diode (D2) is monitored in real time, the difference between the load output voltage value V1 of the infrared receiving diode (D2) when there is liquid medicine in the transfusion pipeline and the load output voltage value V2 of the infrared receiving diode (D2) when there is no liquid medicine in the transfusion pipeline is controlled, so that the maximum difference Vmax of V2-V1 = (Vcc-0.7) × 40% is achieved, and in the formula, a power supply (Vcc) is the system power supply voltage.
4. The infrared detection transfusion state reminding method as claimed in claim 1 or 2, characterized in that: when the voltage signal of the liquid medicine state in the infusion tube is monitored and judged, the intermittent mode is adopted, one period is continuously monitored at intervals of 800-1000ms, each monitoring period is continuously carried out for 100ms, and the detection and comparison judgment are completed once every 0.5 ms.
5. An infrared infusion reminder for implementing the infrared detection infusion state reminding method of claim 1, characterized in that: the system comprises an infrared signal acquisition module (1), a signal processing module (2), an alarm module (3) and a power supply (Vcc), wherein the input end of the signal processing module (2) is electrically connected with the output end of the infrared signal acquisition module (1), and the output end of the signal processing module is electrically connected with the input end of the alarm module (3); the infrared signal acquisition module (1) is composed of an infrared emitting diode (D1), an infrared receiving diode (D2), a first resistor (R1), a third resistor (R3), a first capacitor (C1) and a third capacitor (C3), the cathode of the infrared emitting diode (D1) is connected with the output end of the single chip microcomputer through the first resistor (R1) and the first capacitor (C1), the anode of the infrared receiving diode (D2) is connected with the input end of the single chip microcomputer through the third resistor (R3) and the third capacitor (C3), and the infrared emitting diode (D1) and the infrared receiving diode (D2) are connected with the first resistor (R1), the first capacitor (C1), the third resistor (R3) and the third capacitor (C3) in a mixed mode and then connected with a power supply (Vcc); the signal processing module (2) adopts a single chip microcomputer, the alarm module (3) adopts a Buzzer (BZ), and an infrared emitting diode (D1) and an infrared receiving diode (D2) of the infrared signal acquisition module (1) are clamped on two sides of an infusion pipeline on the upper part of the drip chamber of the infusion apparatus.
6. The infrared infusion reminder according to claim 5, characterized in that: a second resistor (R2) and a second capacitor (C2) are further connected between the negative electrode of the infrared emitting diode (D1) of the signal acquisition module (1) and the output end of the single chip microcomputer, and a second resistor (R2) and a second capacitor (C2) are further connected between the infrared emitting diode (D1) and the power supply (Vcc) in a mixed mode.
7. The infrared infusion reminder according to claim 5, characterized in that: and both ends of a Buzzer (BZ) of the alarm module (3) are also connected with a light emitting diode (D3) and a fourth resistor (R4) in parallel.
8. The infrared infusion reminder according to claim 5 or 6, characterized in that: the single chip microcomputer is an 8-bit single chip microcomputer with AD conversion, the infrared emitting diode (D1) and the infrared receiving diode (D2) are correspondingly and respectively arranged on the inner sides of the two clamping arms of the infusion tube clamp (4), the two clamping arms are clamped on an infusion tube path on the upper portion of the dropping funnel of the infusion apparatus through the infusion tube clamp (4), and the inner sides of the two clamping arms of the infusion tube clamp (4) are provided with circular grooves matched with the infusion tube.
9. The infrared infusion reminder according to claim 5 or 6, characterized in that: the single chip microcomputer monitors and judges the liquid medicine state in the infusion tube through the load output voltage V of the infrared receiving tube (D2), detects the load output voltage value V1 of the infrared receiving diode (D2) when liquid medicine exists in the infusion tube, detects the load output voltage value V2 of the infrared receiving diode (D2) when no liquid medicine exists in the infusion tube, and when the threshold voltage Vp = [ (V1 + V2)/2 +0.7] is controlled, the single chip microcomputer judges that no liquid medicine exists in the infusion tube, drives the alarm circuit to work and alarm, and outputs an acousto-optic prompt signal.
10. The infrared infusion reminder according to claim 5 or 6, characterized in that: the single chip microcomputer adopts a power-off mode/shutdown mode, continuously works for a period every 900ms, each working period takes 100ms, detection on load output voltage of an infrared receiving diode (D2) is completed every 0.5ms, after 900ms, the single chip microcomputer automatically wakes up after a power-off wake-up timer counts to enter the next monitoring cycle until the monitored voltage value is lower than a set control threshold voltage Vp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010281606.2A CN111437463A (en) | 2020-04-10 | 2020-04-10 | Infrared detection infusion state reminding method and infrared infusion reminder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010281606.2A CN111437463A (en) | 2020-04-10 | 2020-04-10 | Infrared detection infusion state reminding method and infrared infusion reminder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111437463A true CN111437463A (en) | 2020-07-24 |
Family
ID=71651534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010281606.2A Pending CN111437463A (en) | 2020-04-10 | 2020-04-10 | Infrared detection infusion state reminding method and infrared infusion reminder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111437463A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691035A (en) * | 2014-01-09 | 2014-04-02 | 济南智邦电子科技有限公司 | Medical intravenous infusion alarm |
| CN204815161U (en) * | 2015-05-21 | 2015-12-02 | 北京工业大学 | Infusion automatic alarm circuit structure |
| CN106693113A (en) * | 2016-12-22 | 2017-05-24 | 山东大学 | Transfusion monitoring alarm |
| CN107715236A (en) * | 2017-10-23 | 2018-02-23 | 佛山科学技术学院 | A kind of intelligent transfusion supervisory circuit |
| CN208799613U (en) * | 2018-05-31 | 2019-04-30 | 广东松山职业技术学院 | Inexpensive portable infusion monitoring alarm |
| CN110013581A (en) * | 2018-12-20 | 2019-07-16 | 药大制药有限公司 | A kind of infusion alarm system and method |
| CN212817475U (en) * | 2020-04-10 | 2021-03-30 | 陈器 | Infrared infusion reminder |
-
2020
- 2020-04-10 CN CN202010281606.2A patent/CN111437463A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691035A (en) * | 2014-01-09 | 2014-04-02 | 济南智邦电子科技有限公司 | Medical intravenous infusion alarm |
| CN204815161U (en) * | 2015-05-21 | 2015-12-02 | 北京工业大学 | Infusion automatic alarm circuit structure |
| CN106693113A (en) * | 2016-12-22 | 2017-05-24 | 山东大学 | Transfusion monitoring alarm |
| CN107715236A (en) * | 2017-10-23 | 2018-02-23 | 佛山科学技术学院 | A kind of intelligent transfusion supervisory circuit |
| CN208799613U (en) * | 2018-05-31 | 2019-04-30 | 广东松山职业技术学院 | Inexpensive portable infusion monitoring alarm |
| CN110013581A (en) * | 2018-12-20 | 2019-07-16 | 药大制药有限公司 | A kind of infusion alarm system and method |
| CN212817475U (en) * | 2020-04-10 | 2021-03-30 | 陈器 | Infrared infusion reminder |
Non-Patent Citations (3)
| Title |
|---|
| 康军;: "红外传感器在输液自动报警器上的应用", 中外企业家, no. 11, 15 April 2016 (2016-04-15), pages 258 * |
| 王勇;张正中;: "一种能检测输液回血的光电设备设计研究", 轻工科技, no. 06, 11 June 2018 (2018-06-11), pages 93 - 94 * |
| 黄美霞;严潭;: "输液自动报警器的研制与应用", 医疗卫生装备, no. 01, 15 January 2013 (2013-01-15), pages 38 - 39 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103751883B (en) | A kind of Portable intelligent transfusion management device | |
| CN204910333U (en) | Medical treatment infusion liquid level autoalarm | |
| CN103007388A (en) | Portable intravenous infusion controller | |
| CN212817475U (en) | Infrared infusion reminder | |
| CN203619997U (en) | Circuit capable of automatically detecting residual amount of liquid of transfusion device and alarming | |
| CN105617483A (en) | Transfusion supervising device with automatic alarm function | |
| CN111035830A (en) | Intelligent monitoring system and method applied to clinical infusion nursing | |
| CN204932467U (en) | A kind of infusion alarm | |
| CN203154459U (en) | Portable intravenous infusion controller | |
| CN111437463A (en) | Infrared detection infusion state reminding method and infrared infusion reminder | |
| CN205041897U (en) | Perfusion alarm | |
| CN104958810A (en) | Liquid level automatic alarm device in medical transfusion | |
| CN200998465Y (en) | Intelligent transfusion monitoring and warning device | |
| CN201171822Y (en) | Transfusion infrared alarm for medical use | |
| CN106215283B (en) | Intelligent transfusion alarm system | |
| CN205084119U (en) | Liquid level detection device and infusion monitored control system for infusion | |
| CN109954183A (en) | Automatically control infusion and monitoring system | |
| CN211912380U (en) | Intelligent monitoring system applied to clinical infusion nursing | |
| CN211244946U (en) | Capacitance type transfusion alarm | |
| CN211584653U (en) | Wireless infusion alarm | |
| CN210170584U (en) | Venous transfusion auxiliary device | |
| CN102974001B (en) | Hanging injection detecting system | |
| CN208256076U (en) | A kind of lucifugal infusion intelligent monitoring device | |
| CN209108292U (en) | A kind of unmanned guard drop automatic monitoring system device | |
| CN221600889U (en) | Low level detecting alarm device for hanging bottle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |