CN202516103U - Liquid dropping speed measurement monitoring device - Google Patents

Abstract

The utility model discloses a monitoring device for liquid drip speed measurement, which comprises a drip speed detection module for detecting the drip speed of liquid droplets; a liquid level detection and hoisting limit alarm module for detecting the height of the liquid level and the height of the drip bottle And realize the alarm when the liquid level is lower than the alarm height or the drop bottle is higher than the warning line; the motor drive module is used to drive the motor to work; the keyboard and display module are used to input the preset drop speed and display the drop speed in real time The main control module is used to control the operation of the above-mentioned modules; among them, the drop speed detection module, the liquid level detection and the lifting limit alarm module, the motor drive module, the keyboard and the display module are respectively connected with the main control module. The utility model liquid drip speed measurement monitoring device can monitor the infusion speed of each person, and can also send out an alarm signal to call the nursing staff when the infusion ends. , using simple features.

Description

A monitoring device for liquid drip speed measurement

technical field

The utility model relates to a control device used in the treatment process of classic infusion in the process of treating diseases, in particular to a monitoring device for liquid drip speed measurement.

Background technique

With the development of science and technology, more and more fields require precise control of the flow of liquids. For example, the detection and analysis of trace chemical elements in the chemical field often requires precise control of the flow. The infusion speed also requires precise control to achieve better therapeutic effect.

Due to the continuous emergence of new drugs, in the process of treating diseases, it has become more and more common to adopt intravenous infusion methods. However, in the process of infusion, different liquid medicines have different optimal drip speed requirements. Too fast or too slow will affect the curative effect. At present, in the clinical infusion process, the original method of "checking the number of drops while looking at the second hand of the watch" is used to control the patient's infusion speed. The nurse manually counts for about 10-15 seconds, and then converts it into the number of drops per minute. Apparently, this infusion dripping speed by visual observation and counting is difficult to accurately measure and control, and it is a waste of time to adjust when the nursing staff is transfusing the patient. With the continuous improvement of ward conditions, the number of people in each ward is getting smaller and smaller. When the infusion is completed or the bottle is changed, the patient or his family still needs to call the nursing staff to change the medicine or pull out the needle, which is very easy to cause neglect and cause danger. Of course, the infusion pumps on the market can better solve this problem, but each infusion pump is tens of thousands of yuan, and the domestic production is also several thousand yuan. Generally, a hospital with at least 20-80 beds in a third-level hospital will need to invest a few dollars. One hundred thousand yuan, or even millions of yuan, is unaffordable even for hospitals with good benefits.

Utility model content

The utility model provides a monitoring device for measuring and monitoring the speed of liquid dripping aiming at the above technical problems.

A liquid drip speed measurement monitoring device, comprising

The drop speed detection module is used to detect the drop speed of the liquid drop;

The liquid level detection and lifting limit alarm module is used to detect the height of the liquid level and the height of the drip bottle and realize the alarm when the liquid level is lower than the alarm height or the drip bottle is higher than the warning line;

The motor drive module is used to drive the motor to work;

The keyboard and display module are used to input the preset drop rate and display the drop rate in real time;

The main control module is used to control the operation of the above-mentioned modules;

Among them, the drop speed detection module, the liquid level detection and lifting limit alarm module, the motor drive module, the keyboard and the display module are respectively connected with the main control module.

The infusion monitoring device with the above structure can realize the automatic detection and alarm function during the infusion process. When the predetermined infusion speed is input to the keyboard and the display module, the motor drive module is controlled by the main control module to drive the motor to work, and the height of the infusion bottle is adjusted to adjust the infusion. The drop speed of the drip can realize the control of the infusion speed; when the liquid level in the drip bottle is lower than the set value or the motor drives the infusion bottle to rise above the set height, when the drip speed has not reached the set value, the liquid level detection and lifting The limit alarm module will issue an alarm to remind medical staff or other personnel to deal with it in time; the drip speed detection module can detect the drip speed of the drip, and transmit the drip speed data to the main control module, and the keyboard and display module can display the drip drip in real time speed.

The drop speed detection module includes an infrared pair tube for the drop action. The infrared pair tube has high sensitivity. Strong; when there is a droplet falling, the falling water droplets have strong diffuse reflection, absorption and certain scattering of infrared light, resulting in a large change in the received light intensity. The trigger is sent to the interrupt port of the main control module, so that the fall of the droplet can be detected correctly.

The liquid level detection and lifting limit alarm module includes an infrared pair tube for detecting the height of the liquid level,

The main control module includes a single-chip microcomputer.

The utility model adopts various detection modules and alarm modules to effectively detect the height of the liquid level in the drip bottle during infusion, and can set the drip speed, and drive the drip bottle through the motor to adjust the height of the drip bottle to achieve the preset drip speed , and in order to prevent the preset drip speed from being too high and difficult to achieve, the motor drives the drip bottle to rise above the limit height, and the danger can be effectively prevented by lifting the limit alarm module. The infusion monitoring device of the utility model can realize the automatic monitoring function during infusion .

Description of drawings

Fig. 1 is the master station system block diagram of the utility model embodiment;

Fig. 2 is the slave station system block diagram of the utility model embodiment;

Fig. 3 is the keyboard and display of the utility model embodiment;

Fig. 4 is the liquid level detection circuit diagram of the utility model embodiment;

Fig. 5 is a motor drive circuit diagram of the utility model embodiment;

Detailed ways

The embodiments of the present utility model are described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present utility model. All similar structures and similar changes of the utility model should be included in the protection of the utility model. scope.

Fig. 1 is the master station system block diagram of the present utility model, and each liquid drip speed measurement monitoring device is responsible for monitoring a slave station, and each slave station is connected with the master station through a communication interface, and the master station is connected with a keyboard and a display module, an acousto-optic Alarm module and voice module.

Fig. 2 is a block diagram of the slave station system of the present invention, including a drop speed detection module, a liquid level detection and a lifting limit alarm module, a motor drive module, a keyboard and a display module, and a master control module connected to the above modules respectively, the master station passes The aforementioned modules connected to it control the slaves.

Fig. 3 is the circuit diagram of the keyboard and the display module of the present utility model, during transfusion, input the preset drip speed through the keyboard and the display module, the keyboard and the display module can also display the drip speed in real time, and the main control module receives the preset drip speed. After receiving the drip speed information, the main control module drives the motor through the connected motor drive module, and the motor drive module drives the motor to drive the infusion bottle to rise to increase the drip speed until the drip speed reaches the preset value; and when the preset drip speed exceeds High, so that when the motor drives the infusion bottle to rise to the limit height, the dripping speed still cannot reach the preset value. In order to prevent danger, the main control module has a preset limit height value. The connected liquid level detection and lifting limit alarm module will detect this situation and pass the information to the main control module. The module stops the motor to prevent the motor from continuing to drive the infusion bottle up and pull down the infusion stand; when the liquid level in the infusion bottle is lower than the preset warning value, the liquid level detection and lifting limit alarm module detects this information and sends The information is fed back to the main control module, and the main control module controls the liquid level detection and hoisting limit alarm module to issue an alarm.

In the process of use, the detection of dripping speed and liquid level is realized through the infrared tube, that is, the dripping speed detection module and the liquid level detection and lifting limit alarm module all include infrared tubes. The water droplets have strong diffuse reflection, absorption and certain scattering effects on infrared light, resulting in a large change in the received light intensity. The signal received by the receiving tube is sent to the interrupt of the main control module through a first-level Schmidt trigger. According to this, it is possible to accurately detect the droplet drop.

Fig. 4 is the circuit diagram of the liquid level detection of the present utility model, the principle of the liquid level detection and the lifting limit alarm module is the same as that of the drop speed detection circuit, because the absorption coefficient of infrared light in the air and water is different, so the received light after passing through the air and water Light intensity also varies. In order to accurately judge whether the liquid level reaches the warning line, enhance the anti-interference ability, and reduce the probability of misjudgment, a comparator is added at the receiving end, and the comparison level can be adjusted according to the receiving sensitivity. After being shaped by two-stage Schmitt triggers, it is sent to the main control module for interrupt processing. In order to prevent the dangerous situation from happening if the drip speed does not reach the preset value, an infrared detector is installed on the top of the bracket. If it is detected that the infusion bottle rises to the top of the bracket, a signal is sent to notify the main control module to control the motor to stop. In this embodiment The main control module adopts AT89C52 single-chip microcomputer.

Fig. 5 is the motor driving circuit diagram of the present utility model, and the driving voltage and current required by the DC servo motor are relatively large, so a symmetrical H-bridge driving circuit is adopted, considering that the operating voltage of the single-chip microcomputer is only 5V, while the motor driving circuit uses 15V, At the same time, the motor is an inductive component. In order to reduce its influence on the detection circuit and single-chip microcomputer, optocouplers are added to the front and rear stages to isolate it. In addition, the output current of the single-chip microcomputer is only 5mA, while the output current of the optocoupler is 50mA, so a triode is added in front as the driver of the optocoupler. The torque of the servo motor at a certain speed depends on its dynamic average current, not the static current. The greater the average current, the greater the motor torque. In order to achieve a large average current, four diodes are used to overcome the back electromotive force of the motor; in order to enhance the driving capability, VMOSFETs are used as IRFD630 and IRFD9630, which have small on-resistance, fast switching speed, and small turn-on voltage, which can better realize this function of the device.

Claims (4)

1. a liquid dropping speed measuring and monitoring device is characterized in that, comprises

Drip fast detection module, be used to detect the speed of dripping of drop;

Level Detection and hang and rise the limiting alarm module is used to detect height and the warning when realizing that liquid level is lower than report to the police height or some drop bottle and is higher than warning line of height and the some drop bottle of liquid level;

Motor drive module is used for drive motors work;

Keyboard and display module are used to import the preset speed of dripping of dripping speed and real-time demonstration drop;

Main control module is used to control the operation of above-mentioned each module;

Wherein, drip fast detection module, Level Detection and hang and rise limiting alarm module, motor drive module, keyboard and display module and be connected with main control module respectively.

2. monitoring infusion device according to claim 1 is characterized in that, described fast detection module comprises the infrared tube that is used for the low action of drop.

3. monitoring infusion device according to claim 1 is characterized in that, described Level Detection and hang and rise the limiting alarm module and include the infrared tube that is used to detect liquid level.

4. monitoring infusion device according to claim 1 is characterized in that described main control module comprises single-chip microcomputer.

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