Full-automatic medicine dispensing system and full-automatic medicine dispensing control method

Abstract

The invention discloses a full-automatic dispensing system and a full-automatic dispensing control method, and the method comprises the following steps: injecting a solvent into a dispensing container until the liquid level in the dispensing container reaches a preset first height; stopping injection of the solvent, and injecting the liquid medicine into the dispensing container until the liquid level in the dispensing container reaches a preset second height; stopping injecting the liquid medicine, and detecting the density of a mixed solution of the solvent and the liquid medicine; if it is detected that the density measurement value is larger than the upper limit of the preset range, controlling continuous injection of the solvent until the density measurement value is within the preset range; if it is detected that the density measurement value is smaller than the lower limit of the preset range, the liquid medicine is controlled to continue to be injected till the density measurement value is within the preset range. Liquid level detection and density detection are used for mutual verification, two relatively independent control parameters are adopted to jointly and effectively participate in dispensing control, mixed liquid medicine meeting the density requirement does not need to be manually prepared, and 24-hour uninterrupted safe water supply is ensured.

Description

Technical Field

[0001] The present invention relates to the field of automation, and in particular to a full-automatic medicine dispensing system and a full-automatic medicine dispensing control method. Background Art

[0002] At present, many water plants use automatic control schemes of constant flow, constant water level, constant pressure and proportional flow plus detection feedback for water delivery, water production, water distribution and dosing. Only the dosing system uses manual or manual remote control dosing, and the solution concentration must be manually tested on site.

[0003] However, water plants require a large amount of medicine on a daily basis, and they need to dispense the medicine frequently. In addition, they need to manually monitor the changes in the liquid level during dispensing, which is labor-intensive and time-consuming. The concentration of the dispensed medicine cannot be accurately controlled, which brings a great burden to production.

[0004] In order to improve the efficiency of dispensing, researchers have tried to develop an automatic dispensing system. For example, a Chinese invention application with publication number CN112844209A discloses an automatic dispensing system for inorganic medicines in a sewage treatment station. The system detects the water level in the dispensing box through a first water level sensor, and controls the water inlet control valve and the medicine inlet control valve through a control module.

[0005] However, the control strategy of automatic dispensing in the prior art is relatively crude, using a density sensor to detect the density of the liquid medicine. If the density is higher than the threshold, the water inlet control valve is opened; if the density is lower than the threshold, the drug inlet control valve is opened. However, the concentration of the dispensing liquid fluctuates all the time. The above control strategy makes it very likely that different dispensing concentrations will occur at different times, and the quality of the liquid is unstable.

[0006] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of the present application. It does not necessarily belong to the prior art of the present application, nor does it necessarily provide technical guidance. In the absence of clear evidence that the above content has been disclosed before the filing date of the present application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Summary of the invention

[0007] The purpose of the present invention is to provide a fully automatic dispensing system, which can accurately prepare a mixed liquid medicine that meets the density requirements, does not require manual operation, avoids manual errors, and improves the efficiency and accuracy of dispensing.

[0008] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0009] A fully automatic medicine dispensing system, comprising a medicine dispensing container, a water inlet pipe, a medicine inlet pipe and a liquid outlet pipe connected to the medicine dispensing container, wherein the water inlet pipe is provided with a first valve for controlling the on-off of the pipeline, the medicine inlet pipe is provided with a second valve for controlling the on-off of the pipeline, and the liquid outlet pipe is provided with a third valve for controlling the on-off of the pipeline;

[0010] The dispensing system further comprises a detection tube, the inlet of which is in communication with the lower part of the dispensing container, and the outlet of which is in communication with the upper part of the dispensing container, the detection tube is further provided with a fourth valve, a booster pump and a density detector, the booster pump being configured to allow the liquid entering the detection tube to return to the dispensing container through the outlet of the detection tube;

[0011] The medicine dispensing container is also equipped with a liquid level detector, which is configured to detect the liquid level height information in the medicine dispensing container;

[0012] The drug dispensing system further includes a main control module, which is configured to control the on and off of each valve to enable the drug dispensing container in the following manner:

[0013] Control the second valve, the third valve, the fourth valve and the booster pump to close, and control the first valve to open, until the liquid level detector detects that the liquid level reaches a preset first height;

[0014] Controlling the first valve to close and controlling the second valve to open until the liquid level detector detects that the liquid level reaches a preset second height, which is higher than the first height;

[0015] Control the second valve to close, and control the fourth valve and the booster pump to open;

[0016] If the density measurement value detected by the density detector is greater than the upper limit of the preset range, the first valve is controlled to open until the density measurement value is within the preset range;

[0017] If the density measurement value detected by the density detector is less than the lower limit of the preset range, the second valve is controlled to open until the density measurement value is within the preset range;

[0018] If the density measurement value is within a preset range, the third valve is allowed to be opened.

[0019] Further, based on any one of the technical solutions or a combination of multiple technical solutions mentioned above, there are multiple medicine dispensing containers, and under the control of the main control module, the third valves of the various medicine dispensing containers are opened alternately.

[0020] Further, based on any one of the technical solutions or a combination of multiple technical solutions described above, if the third valve corresponding to the currently enabled medication container is controlled to open, and the liquid level detector detects that the liquid level height is lower than a preset third height, and the third height is lower than the first height, then the third valve is controlled to close, and the third valve corresponding to the spare medication container is controlled to open, wherein the density measurement value detected by the density detector corresponding to the spare medication container is between a preset range.

[0021] Further, based on any one of the technical solutions or a combination of multiple technical solutions described above, the drug inlet pipes of multiple drug dispensing containers are all connected to the raw liquid pool, and the raw liquid stored in the raw liquid pool is pumped into the drug inlet pipe by a lifting pump.

[0022] Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions described above, the dispensing system also includes an alarm device connected to the main control module, and if the liquid level detector detects that the liquid level height is lower than a preset fourth height or higher than a preset fifth height, wherein the fourth height is lower than the third height and the fifth height is higher than the second height, the alarm device is controlled to send an alarm signal.

[0023] Further, based on any one of the technical solutions or a combination of multiple technical solutions described above, a plurality of density detectors are arranged on the detection tube corresponding to the medicine dispensing container, and the plurality of density detectors are arranged in parallel.

[0024] Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions mentioned above, a stirring device is also arranged in the medicine dispensing container, and the stirring device is a fan-blade stirrer; the stirring device can operate 24 hours a day to avoid deposition.

[0025] Further, based on any one of the technical solutions or a combination of multiple technical solutions described above, a plurality of liquid inlet holes are distributed on the tube wall of the detection tube located in the medicine dispensing container.

[0026] Further, based on any one of the above-mentioned technical solutions or a combination of multiple technical solutions, the dispensing system further includes a Baume degree detector and a trash can arranged on the liquid outlet pipe, and the Baume degree detector is configured to detect the Baume degree Bh value of the liquid flowing out of the liquid outlet pipe;

[0027] The third valve on the liquid outlet pipe includes a main liquid outlet valve and a spare liquid outlet valve, wherein the spare liquid outlet valve is in a normally open state;

[0028] If the Baume Bh value detected by the Baume detection instrument exceeds the standard, the main control module controls the closure of the relevant third valve according to the process judgment, and participates in the pre-control of the subsequent dosing process according to the detected Baume value, specifically controlling the closure of the standby liquid outlet valve and opening the trash can to collect the waste liquid in the liquid outlet pipe.

[0029] Further, based on any one of the above-mentioned technical solutions or a combination of multiple technical solutions, the number of the Baume detectors is two and they are arranged in series;

[0030] Each Baume detector is connected in parallel with a seventh valve, and the height of the Baume detector is higher than the height of the seventh valve;

[0031] When the seventh valve is opened, the liquid in the liquid outlet pipe flows through the seventh valve and the check valve;

[0032] When the seventh valve is closed, the liquid in the liquid outlet pipe flows through the Baume detector and the check valve.

[0033] According to another aspect of the present invention, the present invention provides a fully automatic medication dispensing control method, comprising the following steps:

[0034] Injecting solvent into the dispensing container until the liquid level in the dispensing container reaches a preset first height;

[0035] Stop injecting the solvent, and inject the medicine liquid into the medicine dispensing container until the liquid level in the medicine dispensing container reaches a preset second height, and the second height is higher than the first height;

[0036] Stop injecting the liquid medicine, and perform density test on the mixture of the solvent and the liquid medicine;

[0037] If it is detected that the density measurement value is greater than the upper limit of the preset range, the control continues to inject the solvent until the density measurement value is within the preset range;

[0038] If it is detected that the density measurement value is less than the lower limit of the preset range, the control continues to inject the liquid medicine until the density measurement value is within the preset range.

[0039] Further, based on any one of the above-mentioned technical solutions or a combination of multiple technical solutions, the fully automatic medication dispensing control method provided by the present invention further includes the following steps:

[0040] If the density measurement value is detected to be greater than the upper limit of the preset limit range or less than the lower limit of the limit range, an alarm is triggered.

[0041] Further, based on any one of the above-mentioned technical solutions or a combination of multiple technical solutions, the dispensing control method provided by the embodiment of the present invention also includes:

[0042] After the density measurement value is within a preset range, opening the liquid outlet channel of the dispensing container;

[0043] A spare medicine dispensing container is provided, and before the liquid level in the medicine dispensing container whose liquid outlet channel is currently opened drops to a preset third height, the solvent and the medicine liquid are injected into the spare medicine dispensing container, and the density of the mixed liquid is within a preset range;

[0044] When the liquid level in the medication dispensing container with the current liquid outlet channel opened drops to the third height, its liquid outlet channel is closed, and the liquid outlet channel of the standby medication dispensing container is opened.

[0045] Further, based on any one of the above technical solutions or a combination of multiple technical solutions, the first height and the second height are obtained in advance through the following test steps:

[0046] Prepare solvent samples and stock solution samples;

[0047] injecting a solvent sample into the dispensing container to an initial height;

[0048] Then inject the stock solution sample and monitor the density of the mixed solution in real time until the target density is reached and stop injecting the stock solution sample;

[0049] If the liquid level of the mixed liquid of the solvent sample and the stock solution sample is lower than the preset safety height, the initial height is increased and the above steps are repeated until the liquid level of the mixed liquid reaches the preset safety height. The initial height at this time is determined to be the first height, and the liquid level of the mixed liquid is determined to be the second height.

[0050] The beneficial effects brought by the technical solution provided by the present invention are as follows:

[0051] a. It can accurately prepare mixed liquid medicine that meets the density requirements without manual intervention and avoid human errors, thus improving the efficiency and accuracy of medicine preparation and completing the last link of unmanned operation in water plants;

[0052] b. Use liquid level detection and density detection to verify each other: The water-to-drug ratio obtained by the preliminary test can roughly verify the accuracy of the density detector. The density detector can provide a "leak-filling" drug concentration adjustment service for the water-to-drug ratio, so that the final drug solution concentration meets the requirements;

[0053] c. Failures of sensors and actuators can be discovered in a timely manner; defective products can be automatically discovered and removed in a timely manner.

[0054] d. Two or more relatively independent control parameters are used to effectively participate in the dispensing control. Redundant control is implemented for key detection and control nodes. The overall control redundancy is high, ensuring 24-hour uninterrupted and safe water supply from the water plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0056] Figure 1 A schematic diagram of the basic structure of a fully automatic drug dispensing system provided for an exemplary embodiment of the present invention;

[0057] Figure 2 A schematic diagram of the structure of a fully automatic medication dispensing system with multiple medication dispensing containers provided for an exemplary embodiment of the present invention;

[0058] Figure 3 A schematic flow chart of a fully automatic medication dispensing control method provided for an exemplary embodiment of the present invention;

[0059] Figure 4 For Figure 2 A flow chart of a dispensing control method for a fully automatic dispensing system;

[0060] Figure 5 It is a schematic diagram of the fully automatic dispensing control method when the Baume detection value Bh exceeds the standard;

[0061] Figure 6 A schematic diagram of the structure of a gravity trash bin provided below a liquid outlet pipe is provided as an exemplary embodiment of the present invention.

[0062] Among them, the figure marks include: 100-drug dispensing container, 110-liquid level detector, 120-fan blade agitator, 210-water inlet pipe, 220-drug inlet pipe, 230-liquid outlet pipe, 240-detection tube, 310-first valve, 320-second valve, 330-third valve, 340-fourth valve, 350-fifth valve, 360-sixth valve, 370-seventh valve, 380-check valve, 410-boosting pump, 420-density detector, 430-Baume degree detector, 500-raw liquid tank, 510-lifting pump, 610-trash can, 620-waste liquid tank. DETAILED DESCRIPTION

[0063] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0064] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, device, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0065] In one embodiment of the present invention, a fully automatic drug dispensing system is provided. Figure 1 The medicine dispensing system includes a medicine dispensing container 100, a water inlet pipe 210, a medicine inlet pipe 220 and a liquid outlet pipe 230 connected to the medicine dispensing container, the water inlet pipe 210 is provided with a first valve 310 for controlling the on-off of the water inlet pipe 210, the medicine inlet pipe 220 is provided with a second valve 320 for controlling the on-off of the medicine inlet pipe 220, and the liquid outlet pipe 230 is provided with a third valve 330 for controlling the on-off of the liquid outlet pipe 230;

[0066] The dispensing system also includes a detection tube 240, whose inlet is connected to the lower part of the dispensing container 100, and whose outlet is connected to the upper part of the dispensing container 100. The detection tube 240 is also provided with a fourth valve 340, a booster pump 410 and a density detector 420. The booster pump 410 is configured to allow the liquid entering the detection tube 240 to return to the dispensing container 100 through the outlet of the detection tube 240. In a specific embodiment, one end of the detection tube 240 is connected to the side wall of the dispensing container 100 close to the bottom, and the other end is connected to the top of the dispensing container 100. The detection tube 240 is located in the dispensing container 100. A plurality of liquid inlet holes 242 are distributed on the tube wall, which can increase the flow rate entering the detection tube 240 on the one hand, and can sample from a plurality of longitudinal sections on the other hand, so as to avoid the concentration difference of each section causing the density of the liquid sampled in the detection tube 240 to accidentally deviate from the true value.

[0067] The medicine dispensing container 100 is also equipped with a liquid level detector 110. In this embodiment, an ultrasonic liquid level meter can be used, which is configured to detect the liquid level height information in the medicine dispensing container 100;

[0068] The dispensing system also includes a main control module, the liquid level detector 110 is connected to the input end of the main control module, and the output end of the main control module is respectively connected to the first valve 310, the second valve 320, the third valve 330, and the fourth valve 340; each of the above valves is an electronically controllable valve controlled by the main control module, such as a solenoid valve, which can be a switch valve type or an opening valve type valve, especially a valve that can respond to the control volume ratio and PID precise adjustment requirements. Figure 1 As shown, the first valve 310 and the second valve 320 are both installed vertically, and the valves are PID opening controlled. The valves are gradually closed before reaching the specified liquid level. There is almost no closing process time, and there is no problem of residual liquid in the pipeline dripping into the container after closing the valve.

[0069] See also Figure 3 The main control module is configured to control the on / off of each valve to enable the medication container 100 in the following manner:

[0070] The second valve, the third valve, and the fourth valve are controlled to be closed, and the first valve is controlled to be opened, and at this time, the solvent (water) is injected into the dispensing container until the liquid level detector 110 detects that the liquid level reaches a preset first height, such as 1.7 m;

[0071] When the liquid level reaches a first height, the first valve is controlled to close (i.e., stop injecting the solvent), and the second valve is controlled to open (i.e., inject liquid medicine into the dispensing container) until the liquid level detector 110 detects that the liquid level reaches a preset second height, which is higher than the first height, for example, the second height is 1.8 m. Compared with the volume ratio control method, the initial volume control is performed through liquid level PID control, and the liquid level control can avoid mechanical or electrical failures compared with the time relay control.

[0072] The second valve is controlled to be closed (ie, the injection of liquid medicine is stopped), at which time the PID control of the liquid level ends, and the fourth valve 340 and the booster pump 410 are controlled to be opened to connect the detection tube 240 for density detection.

[0073] In one embodiment, the medicine dispensing container 100 is further provided with a stirring device, which is a fan blade stirrer 120. Preferably, the fan blade stirrer 120 is vertically arranged in the middle of the medicine dispensing container 100, and multiple groups of stirring blades are arranged at different heights; before controlling the fourth valve 340 to open, the stirring device is also started, and the mixed liquid after stirring enters the detection tube 240 for density detection. The fan blade stirrer 120 can be operated 24 hours a day to keep the liquid uniform and ensure the measurement accuracy of the density meter.

[0074] The first height and the second height here are not limited to a specific numerical range, and the first height and the second height can be obtained in advance through the following test steps:

[0075] Prepare solvent samples (such as water) and stock solution samples;

[0076] injecting a solvent sample into the dispensing container to an initial height;

[0077] Then inject the stock solution sample and monitor the density of the mixed solution in real time until the target density is reached and stop injecting the stock solution sample;

[0078] If the liquid level of the mixed liquid of the solvent sample and the stock solution sample is less than a preset safety height (for example, it can be set to 90% of the height of the dispensing container, and the remaining 10% is used as a reserve margin for adjusting the density of the mixed liquid to within a preset range during the actual dispensing process), the initial height can be increased, and the above steps can be repeated until the liquid level of the mixed liquid reaches the preset safety height. The initial height at this time is determined to be the first height, and the liquid level of the mixed liquid at this time is determined to be the second height.

[0079] It can be seen from this that the embodiment of the present invention provides a method for mixing a certain amount of solvent and original drug solution according to an empirical value or a priori value, so that the density of the mixed solution directly reaches a preset qualified range or is approximately close to the qualified range. If it exceeds the qualified range, for example, the density measurement value detected by the density detector 420 is greater than the upper limit of the preset range, the first valve is controlled to open until the density measurement value is within the preset range; for example, the density measurement value detected by the density detector 420 is less than the lower limit of the preset range, the second valve is controlled to open until the density measurement value is within the preset range. In this embodiment, the preset range can be N1% above and below the standard density value, and N1 can be 5;

[0080] The purpose of selecting a density tester for verification control is to avoid possible errors caused by fluctuations in alumina content and level meter fluctuations due to temperature changes during transportation and storage, thus ensuring safe water supply.

[0081] The third valve is allowed to be opened only when the density measurement value is within the preset range, that is, the third valve is allowed to be opened to discharge liquid only when the density measurement result meets the preset requirements. As the main dispensing container discharges liquid, the liquid level continues to decrease. When it is detected that the liquid level drops to a third height (such as 15% of the container height), the liquid discharge channel of the dispensing container is closed.

[0082] In one embodiment, the dispensing system further includes an alarm device connected to the main control module. If the liquid level detector 110 detects that the liquid level is lower than a preset fourth height or higher than a preset fifth height, wherein the fourth height is lower than the third height and the fifth height is higher than the second height, the alarm device is controlled to send out an alarm signal. This is advantageous in that when the liquid level detector 110 fails, or the pump or valve fails (switch fails), an audible and visual alarm is generated to prompt the staff to perform on-site equipment maintenance.

[0083] In addition, if the density measurement value detected by the density detector 420 is too large (greater than the upper limit of the preset limit range, such as greater than the standard density value floating upward by N2%, N2 can be 10) or the density measurement value is too small (less than the lower limit of the limit range, such as less than the standard density value floating downward by N2%, N2 can be 10), the alarm device will alarm; it will serve as a fault prompt for the liquid level detector 110, and the actuator system may fail or the instrument error may exceed the allowable range. Mutual verification using liquid level detection and density detection: The water-to-drug ratio obtained by the preliminary test can roughly verify the accuracy of the density detector, and the density detector can provide a "leak-checking and gap-filling" drug concentration adjustment service for the water-to-drug ratio, so that the final drug solution concentration meets the requirements.

[0084] In addition to using sound and light alarms, the alarm device can also use wireless communication to send reminder messages to preset contacts to achieve remote alarms.

[0085] In one embodiment, a plurality of density detectors 420 are disposed on the detection tube 240 corresponding to the medicine dispensing container 100, and the plurality of density detectors 420 are arranged in parallel; Figure 1 As shown, each density detector 420 is provided with a manual switch valve at the front and rear, and the manual switch valve can also function as an instrument flow limiting valve. The purpose of setting multiple density detectors 420 is to prevent the density detector 420 from malfunctioning and affecting the dispensing efficiency. When a density detector 420 has a performance failure, an alarm can be given and the device can be switched to another density detector; or the two density detectors 420 can work in redundant control at the same time; when one of the density detectors 420 needs to be repaired, the manual switch valves at the front and rear can be operated to close, and then the density detector 420 can be disassembled to replace a new density detector.

[0086] Similarly, a manual switch valve is also provided at the inlet end of the detection tube 240. When the detection tube 240 or the device on the tube needs to be inspected and repaired, the manual switch valve can be manually closed in advance.

[0087] After the mixed liquid in the detection tube 240 is detected by the density detector 420, it can be returned to the dispensing container 100 for reuse. In one embodiment, an additional detection device can be added to the liquid outlet tube 230, such as Figure 1 As shown: the Baume degree detector 430 is configured to detect the Baume degree value of the liquid flowing out of the liquid outlet pipe 230; the detection instrument on the liquid outlet main pipe is both the control end point of the dispensing system and the pre-parameter of the dosing system control. It is a node that connects the upper and lower control. A temperature-compensated Baume degree meter is selected to ensure the required accuracy and sensitivity of the numerical value.

[0088] like Figure 1 and Figure 2 As shown, in this embodiment, two Baume detectors 430 are arranged in series, each Baume detector 430 is connected in parallel with a seventh valve 370, and a check valve 380 is arranged on the outlet side of the seventh valve 370. In normal use, the seventh valve 370 can play a role in regulating flow, ensuring that the flow rate passing through the Baume detector 430 is within the suitable range of the Baume detector; at the same time, the seventh valve 370 has a certain opening, and once the Baume detector value Bh exceeds the standard, the unqualified liquid between the seventh valve 370 and the check valve 380 is discharged into the trash can. When Baume maintenance is required, the corresponding seventh valve 370 is fully opened, and the maintenance valves on both sides of the Baume detector 430 are closed.

[0089] In one embodiment, Figure 6 As shown, a trash bin 610 connected to the liquid outlet pipe 230 is provided below the trash bin 610. The inlet of the trash bin 610 is provided with a fifth valve 350, and the outlet thereof is provided with a sixth valve 360. If the Baume value Bh detected by the Baume detector 430 exceeds the standard, the main control module controls the alarm device to alarm (see Figure 5 ), the Baume degree detector is used to detect whether it meets the requirements, and the related main liquid outlet valve and the backup liquid outlet valve are controlled to close and start, and the fifth valve 350 and the sixth valve 360 ​​are linked, and the related operation procedures are automatically determined and executed, which can further ensure the accuracy of drug dispensing.

[0090] The third valve on the liquid outlet pipe 230 of each pharmaceutical dispensing container includes a main liquid outlet valve and a spare liquid outlet valve arranged in series, wherein the spare liquid outlet valve is in a normally open state;

[0091] like Figure 5As shown, if the test results of the two Baume detectors 430 are both over the standard, it means that there is a problem with the third valve on the liquid outlet pipe 230 of the current standby dispensing container, and the main control module controls the standby liquid outlet valve of the standby dispensing container (the previous dispensing container in use in order) to close. For example, the dispensing containers include container A, container B, and container C, and are opened in the order of A, B, C, A, B, and C. If the current main dispensing container is container A, if the test results of the two Baume detectors 430 are both over the standard, the main control module controls the standby liquid outlet valve on the liquid outlet pipe 230 of container C to close; if the current main dispensing container is container B, if the test results of the two Baume detectors 430 are both over the standard, the main control module controls the standby liquid outlet valve on the liquid outlet pipe 230 of container A to close; if the current main dispensing container is container C, if the test results of the two Baume detectors 430 are both over the standard, the main control module controls the standby liquid outlet valve on the liquid outlet pipe 230 of container B to close.

[0092] When the test results of the two Baume detectors 430 are both over-standard, the main control module starts the gravity trash bin solution, that is, controls the opening of the trash bin to collect the waste liquid that is detected to be over-standard. Specifically, the volume of the trash bin is equivalent to the volume between the check valve and each third valve. The fifth valve 350 and the sixth valve 360 ​​are linked in program to accurately and timely process the over-standard solution, and the over-standard solution is collected in the waste liquid pool for reuse by the supplier; therefore, the quality and flow requirements of the dispensing system are guaranteed and foolproof. The specific valve control process is as follows:

[0093] First, close the main liquid outlet valve in use to stop the liquid discharge; then open the fifth valve 350 to allow the waste liquid with unqualified Baume degree in the liquid outlet pipe 230 to flow into the trash bin 610 under the action of gravity, and then close the fifth valve 350; open the main liquid outlet valve in use; then open the sixth valve 360 ​​to discharge the waste liquid stored in the trash bin 610 into the waste liquid pool 620, and then close the sixth valve.

[0094] If the test result of only one Baume detector 430 exceeds the standard, it is prompted that the Baume detector needs to be repaired.

[0095] In one embodiment, a more efficient fully automatic dispensing system is provided, wherein the number of dispensing containers 100 is multiple, and under the control of the main control module, the third valves 330 of the various dispensing containers 100 are opened alternately, that is, Figure 4 As shown, before a main dispensing container finishes discharging liquid, at least one other standby dispensing container 100 finishes filling liquid and the density of the mixed liquid meets the preset requirements (i.e., enters the standby state); the redundant operation of each dispensing container 100 ensures a fully automatic dispensing system.

[0096] As the main dispensing container discharges liquid, the liquid level continues to drop. When it is detected that the liquid level has dropped to a third height (lower than the first height, such as 15% of the container height), the liquid outlet channel of the main dispensing container is closed, and the liquid outlet channel of the standby dispensing container that is already in standby state is opened (i.e., the third valve 330 on the liquid outlet pipe 230 of the standby dispensing container is opened).

[0097] like Figure 4 As shown, when the standby dispensing container starts to discharge liquid, the main dispensing container starts to fill with liquid. The specific steps of filling with liquid can be as follows Figure 3 The process is completed and the liquid outlet channel is ready to be opened. When the liquid level in the spare dispensing container drops to the third height during the liquid outlet process, the liquid outlet container is switched from the spare dispensing container to the main dispensing container, and this cycle is repeated until the dispensing system issues a command to stop dispensing.

[0098] Taking the number of the dispensing containers 100 as two as an example, the structure of the corresponding dispensing system is as follows: Figure 2 As shown: the liquid level detector 110, the water inlet pipe 210, the medicine inlet pipe 220, the liquid outlet pipe 230, the detection tube 240, the first valve 310, the second valve 320, the third valve 330, the fourth valve 340, the booster pump 410, the density detector 420, and the stirring device correspond to the medicine dispensing container 100 one by one;

[0099] The water inlet pipes 210 of multiple medicine dispensing containers 100 are all connected to the personal water pipe (tap water pipe); the medicine inlet pipes 220 of multiple medicine dispensing containers 100 are all connected to the raw liquid pool 500, and the raw liquid stored in the raw liquid pool 500 is pumped into the medicine inlet pipe 220 by using the lifting pump 510. The lifting pump 510 can be set close to the bottom of the raw liquid pool.

[0100] Obviously, a fully automatic dispensing system with three or more dispensing containers can be configured, and its corresponding structural expansion and dispensing control method are similar to those of the dispensing system with two dispensing containers, which will not be described in detail.

[0101] In one embodiment of the present invention, the present invention provides a fully automatic drug dispensing control method, such as Figure 3 As shown, the dispensing control method includes the following steps:

[0102] Injecting solvent into the dispensing container until the liquid level in the dispensing container reaches a preset first height;

[0103] Stop injecting the solvent, and inject the medicine liquid into the medicine dispensing container until the liquid level in the medicine dispensing container reaches a preset second height, and the second height is higher than the first height;

[0104] Stop injecting the liquid medicine, and then pause for about 20 seconds to allow the solvent and liquid medicine to be fully mixed, and then perform density testing on the mixture of the solvent and liquid medicine;

[0105] If it is detected that the density measurement value is greater than the upper limit of the preset range, the control continues to inject the solvent until the density measurement value is within the preset range;

[0106] If it is detected that the density measurement value is less than the lower limit of the preset range, the control continues to inject the liquid medicine until the density measurement value is within the preset range.

[0107] For the case where there are multiple medication containers, the medication control method provided in this embodiment is as follows: Figure 4 As shown:

[0108] After the density measurement value is within a preset range, opening the liquid outlet channel of the dispensing container;

[0109] A spare medicine dispensing container is provided, and before the liquid level in the medicine dispensing container whose liquid outlet channel is currently opened drops to a preset third height, the solvent and the medicine liquid are injected into the spare medicine dispensing container, and the density of the mixed liquid is within a preset range;

[0110] When the liquid level in the medication dispensing container with the current liquid outlet channel opened drops to the third height, its liquid outlet channel is closed, and the liquid outlet channel of the standby medication dispensing container is opened.

[0111] The fully automatic dispensing control method provided in the embodiment of the present invention and the fully automatic dispensing system provided in the above embodiment belong to the same inventive concept. The entire contents of the above-mentioned fully automatic dispensing system embodiment are incorporated into this dispensing control method embodiment by full reference to avoid redundancy.

[0112] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0113] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A fully automatic medicine dispensing system, comprising a medicine dispensing container (100), a water inlet pipe (210) connected to the medicine dispensing container, a medicine inlet pipe (220) and a liquid outlet pipe (230), wherein the water inlet pipe (210) is provided with a first valve (310) for controlling the on-off of the pipeline, the medicine inlet pipe (220) is provided with a second valve (320) for controlling the on-off of the pipeline, and the liquid outlet pipe (230) is provided with a third valve (330) for controlling the on-off of the pipeline; It is characterized in that The drug dispensing system further comprises a detection tube (240), an inlet of which is in communication with the lower part of the drug dispensing container (100), and an outlet of which is in communication with the upper part of the drug dispensing container (100). The detection tube (240) is also provided with a fourth valve (340), a booster pump (410) and a density detector (420). The booster pump (410) is configured to allow the liquid entering the detection tube (240) to return to the drug dispensing container (100) through the outlet of the detection tube (240); The medicine dispensing container (100) is also provided with a liquid level detector (110), which is configured to detect liquid level height information in the medicine dispensing container (100); The drug dispensing system further comprises a main control module, which is configured to control the opening and closing of each valve to enable the drug dispensing container (100) in the following manner: Controlling the second valve, the third valve, the fourth valve and the booster pump to close, and controlling the first valve to open, until the liquid level detector (110) detects that the liquid level reaches a preset first height; Controlling the first valve to close and controlling the second valve to open until the liquid level detector (110) detects that the liquid level reaches a preset second height, the second height being higher than the first height; Control the second valve to close, and control the fourth valve and the booster pump to open; If the density measurement value detected by the density detector is greater than the upper limit of the preset range, the first valve is controlled to open until the density measurement value is within the preset range; If the density measurement value detected by the density detector is less than the lower limit of the preset range, the second valve is controlled to open until the density measurement value is within the preset range; If the density measurement value is within a preset range, the third valve is allowed to be opened.

2. The fully automatic dispensing system according to claim 1, characterized in that: There are multiple medicine dispensing containers (100), and under the control of the main control module, the third valves (330) of the various medicine dispensing containers (100) are opened alternately.

3. The fully automatic dispensing system according to claim 2, characterized in that: If the third valve corresponding to the currently activated medicine dispensing container (100) is controlled to be opened, and the liquid level detector (110) detects that the liquid level height is lower than a preset third height, and the third height is lower than the first height, then the third valve is controlled to be closed, and the third valve corresponding to the spare medicine dispensing container (100) is controlled to be opened, wherein the density measurement value detected by the density detector corresponding to the spare medicine dispensing container (100) is within a preset range.

4. The fully automatic dispensing system according to claim 2, characterized in that: The drug inlet pipes (220) of the plurality of drug dispensing containers (100) are all connected to the stock solution pool (500), and the stock solution stored in the stock solution pool (500) is pumped into the drug inlet pipe (220) by means of a lift pump (510).

5. The fully automatic dispensing system according to claim 3, characterized in that: The dispensing system further comprises an alarm device connected to the main control module, and if the liquid level detector (110) detects that the liquid level height is lower than a preset fourth height or higher than a preset fifth height, wherein the fourth height is lower than the third height and the fifth height is higher than the second height, the alarm device is controlled to send out an alarm signal.

6. The fully automatic dispensing system according to claim 1, characterized in that: A plurality of density detectors (420) are arranged on the detection tube (240) corresponding to the medicine dispensing container (100), and the plurality of density detectors (420) are arranged in parallel.

7. The fully automatic drug dispensing system according to claim 1, characterized in that: The medicine dispensing container (100) is also provided with a stirring device, which is a fan blade stirrer (120).

8. The fully automatic drug dispensing system according to claim 1, characterized in that: The drug dispensing system further comprises a Baume degree detector (430) and a trash bin (610) arranged on the liquid outlet pipe (230), wherein the Baume degree detector (430) is configured to detect the Baume degree Bh value of the liquid flowing out of the liquid outlet pipe (230); The third valve (330) on the liquid outlet pipe (230) comprises a main liquid outlet valve and a standby liquid outlet valve, wherein the standby liquid outlet valve is in a normally open state; The inlet end of the garbage bin (610) is provided with a fifth valve (350), and the outlet end thereof is provided with a sixth valve (360); If the Baume Bh value detected by the Baume detector (430) exceeds the standard, the main control module controls the standby liquid outlet valve to close, and opens the garbage bin to collect the waste liquid in the liquid outlet pipe (230).

9. The fully automatic drug dispensing system according to claim 8, characterized in that: The number of the Baume detectors (430) is two and they are arranged in series; Each Baume detector (430) is connected in parallel to a seventh valve (370), and the height of the Baume detector (430) is higher than the height of the seventh valve (370); When the seventh valve (370) is opened, the liquid in the liquid outlet pipe (230) flows through the seventh valve (370) and the check valve (380); When the seventh valve (370) is closed, the liquid in the liquid outlet pipe (230) flows through the Baume detector (430) and the check valve (380).

10. The fully automatic drug dispensing system according to claim 1, characterized in that: The detection tube (240) is located in the medicine dispensing container (100) and has a plurality of liquid inlet holes (242) distributed on its wall.

11. A fully automatic drug dispensing control method, characterized in that: The following steps are involved: Injecting solvent into the dispensing container until the liquid level in the dispensing container reaches a preset first height; Stop injecting the solvent, and inject the medicine liquid into the medicine dispensing container until the liquid level in the medicine dispensing container reaches a preset second height, and the second height is higher than the first height; Stop injecting the liquid medicine, and perform density test on the mixture of the solvent and the liquid medicine; If it is detected that the density measurement value is greater than the upper limit of the preset range, the control continues to inject the solvent until the density measurement value is within the preset range; If it is detected that the density measurement value is less than the lower limit of the preset range, the control continues to inject the liquid medicine until the density measurement value is within the preset range.

12. The fully automatic medication control method according to claim 11, characterized in that: The following steps are also included: If the density measurement value is detected to be greater than the upper limit of the preset limit range or less than the lower limit of the limit range, an alarm is triggered.

13. The drug dispensing control method according to claim 11, characterized in that: Also includes: After the density measurement value is within a preset range, opening the liquid outlet channel of the dispensing container; A spare medicine dispensing container is provided, and before the liquid level in the medicine dispensing container whose liquid outlet channel is currently opened drops to a preset third height, the solvent and the medicine liquid are injected into the spare medicine dispensing container, and the density of the mixed liquid is within a preset range; When the liquid level in the medication dispensing container with the current liquid outlet channel opened drops to the third height, its liquid outlet channel is closed, and the liquid outlet channel of the standby medication dispensing container is opened.

14. The drug dispensing control method according to claim 11, characterized in that: The first height and the second height are obtained in advance by the following test steps: Prepare solvent samples and stock solution samples; injecting a solvent sample into the dispensing container to an initial height; Then inject the stock solution sample and monitor the density of the mixed solution in real time until the target density is reached and stop injecting the stock solution sample; If the liquid level of the mixed liquid of the solvent sample and the stock solution sample is lower than the preset safety height, the initial height is increased and the above steps are repeated until the liquid level of the mixed liquid reaches the preset safety height. The initial height at this time is determined to be the first height, and the liquid level of the mixed liquid is determined to be the second height.

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