CN113947171B - Medical reagent tube positioning method and system based on RFID technology - Google Patents
Medical reagent tube positioning method and system based on RFID technology Download PDFInfo
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- CN113947171B CN113947171B CN202111354806.7A CN202111354806A CN113947171B CN 113947171 B CN113947171 B CN 113947171B CN 202111354806 A CN202111354806 A CN 202111354806A CN 113947171 B CN113947171 B CN 113947171B
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- 239000003153 chemical reaction reagent Substances 0.000 title claims abstract description 107
- 238000005516 engineering process Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004891 communication Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 230000000750 progressive effect Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
- G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/06—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a medical reagent tube positioning method and a system based on an RFID technology, wherein in a counting period, characteristic information of an electronic tag which can be read is repeatedly read through an antenna; then positioning the reagent tube according to the antenna number of the antenna and the characteristic information read by the antenna; the characteristic information comprises an ID number, an RSSI intensity value, a phase value and the reading times, and when the characteristic information is positioned, the target reagent tubes can be positioned in a progressive mode through the antenna, the RSSI intensity value, the phase value and the reading times, so that the target reagent tubes can be positioned accurately under different identification conditions, nearly 100% of accurate positioning of each reagent tube on the reagent tray is realized, and the reagent tubes are prevented from being taken by mistake; and manual intervention is not needed, the positioning efficiency is high, and the workload of staff checking is greatly reduced.
Description
Technical Field
The invention relates to the technical field of biotechnology equipment, in particular to a medical reagent tube positioning method and a system based on an RFID technology.
Background
In the prior art, a bar code is usually attached to the tube wall of a medical reagent tube, and medical staff can only perform daily maintenance and management by reading the bar code device and scanning the bar code successively. Because the bar codes can be scanned one by one, and meanwhile, the angle needs to be manually adjusted, so that the bar codes of the reagent tubes are aligned to the scanning port, the reading efficiency is low, one reagent tube can be read only in 2-4 seconds, and the scanning of 80 reagent tubes is completed, so that the time is longer than five minutes. Along with the increase of the popularity of medical reagent tubes, quick inventory and accurate positioning become industry problems. Many medical complications are caused by mishandling of the sample tube.
Along with the development of the RFID positioning technology, the technology is also applied to the positioning of the reagent tubes, but the reading range of the RFID antenna is larger, the storage of the reagent tubes is denser, the interval between adjacent reagent tubes is small, and thus, the electronic tag on one reagent tube is easily read by a plurality of antennas, and the position of the reagent tube cannot be effectively determined.
Disclosure of Invention
Aiming at the problems existing in the prior art, the main purpose of the invention is to provide a medical reagent tube positioning method based on the RFID technology, which aims at realizing the accurate positioning of the reagent tubes in the reagent tray.
In order to achieve the above purpose, the medical reagent tube positioning method based on the RFID technology provided by the invention comprises the following steps:
s1, repeatedly reading characteristic information of an electronic tag which can be read through an antenna in a checking period, wherein the characteristic information comprises an ID number, an RSSI intensity value, a phase value and the reading times;
s2, positioning the reagent tube according to the antenna number of the antenna and the characteristic information read by the antenna, wherein the positioning process comprises the following steps:
s21, inquiring and reading an antenna A of the target electronic tag according to the ID number of the target electronic tag arranged on the target reagent tube;
if the antenna A for reading the target electronic tag is provided with only one antenna A, judging that the target reagent tube is positioned at the position corresponding to the antenna A;
if there are two or more antennas a for reading the target electronic tag, executing step S22;
s22, inquiring the RSSI intensity value of the target electronic tag read by each antenna A, comparing the intensity values of the RSSI intensity values, and taking the position of the antenna A corresponding to max { RSSI intensity value } as the position of the target reagent tube;
if the RSSI strength values read by two or more antennas a are both max { RSSI strength values }, step S23 is executed;
s23, inquiring the phase value of the target electronic tag read by the antenna A with the RSSI intensity value of max { RSSI intensity value }, comparing the magnitude of each phase value, and taking the position of the antenna A corresponding to min { phase value } as the position of the target reagent tube;
if the phase values read by two or more antennas a are all min { phase value }, executing step S24;
s24, inquiring the reading times of the antenna A with the phase value of min { phase value } to the target electronic tag, comparing the reading times, and taking the position of the antenna A corresponding to max { reading times } as the position of the target reagent tube.
The invention also provides a medical reagent tube positioning system based on the RFID technology, which comprises:
the reagent tray is provided with a plurality of placing holes for placing the reagent tubes, and each placing hole is internally provided with a response signal which is used for sending out radio frequency signals to the electronic tags arranged on the reagent tubes and receiving the radio frequency signals reflected by the electronic tags;
the RFID reader is connected with the antenna and used for reading characteristic information of the electronic tag according to the response signal, wherein the characteristic information comprises an ID number, an RSSI intensity value, a phase value and the reading times;
and a positioning module for positioning the reagent tube according to the antenna number of the antenna and the characteristic information read by the antenna, wherein the positioning process comprises the following steps:
according to the ID number of the target electronic tag arranged on the target reagent tube, inquiring and reading the antenna A of the target electronic tag;
if the antenna A for reading the target electronic tag is provided with only one antenna A, judging that the target reagent tube is positioned at the position corresponding to the antenna A;
if the number of the antennas A for reading the target electronic tag is two or more, executing the next step;
querying the RSSI intensity value of the target electronic tag read by each antenna A, comparing the intensity values of the RSSI intensity values, and taking the position of the antenna A corresponding to max { RSSI intensity value } as the position of the target reagent tube;
if the RSSI intensity values read by two or more antennas A are max { RSSI intensity values }, executing the next step;
inquiring the phase value of the target electronic tag read by the antenna A with the RSSI intensity value of max { RSSI intensity value }, comparing the magnitude of each phase value, and taking the position of the antenna A corresponding to min { phase value } as the position of the target reagent tube;
if the phase values read by two or more antennas A are all min { phase value }, executing the next step;
inquiring the reading times of the antenna A with the phase value of min { phase value } to the target electronic tag, comparing the reading times, and taking the position of the antenna A corresponding to max { reading times } as the position of the target reagent tube.
Optionally, the electronic tag is embedded at the bottom of the reagent tube, and the antenna is arranged at the bottom of the corresponding placement hole.
Optionally, the system further comprises an RS232 communication module, wherein the communication module is used for receiving a control instruction of the cloud platform, reporting a positioning result to the cloud platform and connecting with the RFID reader and the positioning module.
Optionally, a power module is further included for powering the RFID reader and the positioning module.
Optionally, the RFID reader further comprises a trigger and/or a timer, wherein the output end of the trigger and/or the timer is connected with the trigger end of the RFID reader.
In the invention, the characteristic information of the electronic tag which can be read is repeatedly read through the antenna in one checking period; then positioning the reagent tube according to the antenna number of the antenna and the characteristic information read by the antenna; the characteristic information comprises an ID number, an RSSI intensity value, a phase value and reading times, and the positioning process comprises the following steps: according to the ID number of the target electronic tag arranged on the target reagent tube, inquiring and reading the antenna A of the target electronic tag; if the antenna A for reading the target electronic tag is provided with only one antenna A, judging that the target reagent tube is positioned at the position corresponding to the antenna A; if the number of the antennas A for reading the target electronic tag is two or more, inquiring the RSSI intensity value of the target electronic tag read by each antenna A, comparing the intensity values of the RSSI intensity values, and taking the position of the antenna A corresponding to max { RSSI intensity value } as the position of the target reagent tube; if two or more than two antennas exist and the read RSSI intensity values are max { RSSI intensity values }, inquiring the phase value of the target electronic tag read by the antenna A with the RSSI intensity value of max { RSSI intensity values }, comparing the magnitude of each phase value, and taking the position of the antenna A corresponding to min { phase values } as the position of the target reagent tube; if two or more than two antennas read phase values are min { phase values }, inquiring the reading times of the antenna A with the phase value of min { phase values } to the target electronic tag, comparing the reading times, and taking the position of the antenna A corresponding to max { reading times } as the position of the target reagent tube.
Through carrying out progressive location to target reagent pipe with antenna, RSSI intensity value, phase value and recognition number of times, the convenience can all carry out the accurate positioning to target reagent pipe at different discernment circumstances, realizes nearly 100% accurate positioning to each reagent pipe on the reagent tray, avoids reagent pipe to take by mistake, and need not manual intervention, and positioning efficiency is high, alleviates staff's work load of checking greatly.
Drawings
FIG. 1 is a schematic block diagram of a medical reagent tube positioning system based on RFID technology of the present invention;
FIG. 2 is a top view of a reagent tray according to the present invention;
FIG. 3 is a partial schematic view of the reagent vessel of the present invention stored in the reagent tray;
FIG. 4 is a flow chart of a method for positioning a medical reagent tube based on RFID technology of the present invention;
FIG. 5 is a schematic diagram of the positioning process of the positioning module to the target reagent tube according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3 of the drawings, in an embodiment of the present invention, a medical reagent tube positioning system based on RFID technology is provided, which includes a reagent tray 100, an RFID reader 500, and a positioning module 600.
As shown in fig. 1, the reagent tray 100 is provided with 81 placement holes 100a arranged in a 9×9 horizontal and vertical manner, wherein the upper left corner is a useless hole (the difference between the hole and other holes is represented by a square in fig. 1), the remaining 80 placement holes 100a are used for placing the reagent tube 200, and an antenna 400 is placed in each placement hole 100a, and the antenna 400 can send a radio frequency signal to the electronic tag 300 arranged on the reagent tube 200 and receive a response signal reflected by the electronic tag 300.
The RFID reader 500 is connected to one or more antennas 400 to collect, through the antennas 400, characteristic information returned by the electronic tag 300, where the characteristic information includes an ID number, an RSSI intensity value, a phase value, and a number of readings of the electronic tag 300.
In this embodiment, one RFID reader 500 is connected to more than two antennas 400 for simplicity of arrangement.
The positioning module 600 is connected to the RFID reader 500, and when it receives the characteristic information and the antenna number sent by the RFID reader 500, the corresponding characteristic information and antenna number are stored in the tag list for positioning the computing reagent tube 200 after counting.
In this embodiment, the electronic tag 300 is embedded in the bottom of the reagent tube 200, and the antenna 400 is disposed at the bottom of the corresponding placement hole 100 a. Therefore, after the reagent tube 200 is inserted into the placement hole 100a, the embedded electronic tag 300 is effectively aligned with the antenna 400 in the placement hole 100a, so that the antenna 400 can effectively read the characteristic information of the electronic tag 300, and a good basis is provided for subsequent positioning.
In this embodiment, the system further includes an RS232 communication module 700, where the RS232 communication module 700 is connected to the RFID reader 500 and the positioning module 600, and is connected to the cloud platform through a network, so as to upload the positioning result to the cloud platform, and receive a control instruction issued by the cloud platform, so as to control the RFID reader 500 to collect the feature information of the electronic tag 300 in one inventory period.
In this embodiment, the system further includes a trigger 810 and a timer 820, wherein input ends of the trigger 810 and the timer 820 are connected to the RS232 communication module 700, and output ends thereof are connected to a trigger end of the RFID reader 500. Thus, the system may implement a trigger mode of operation and a timed mode of operation via the trigger 810 or the timer 820.
In summary of this embodiment, the system further comprises a rechargeable battery (not shown) which may be built into the reagent tray 100 or may exist in a modular form independent of the reagent tray 100 for powering the RFID reader 500, the positioning module 600, etc. Thereby enabling the system to operate without mains electricity.
As shown in fig. 4, based on the above system, the positioning process of the reagent tube 200 by the system includes:
during a 5 second inventory period, a radio frequency signal is transmitted by the RFID reader 500 through the antenna 400 to activate the electronic tag 300 disposed on the reagent tube 200;
after receiving the radio frequency signal, the electronic tag 300 responds, and the RFID reader 500 repeatedly collects the characteristic information of the electronic tag 300 which can be collected by the RFID reader through the antenna 400;
then, the RFID reader 500 transmits the antenna number of the antenna 400 and the characteristic information of the electronic tag 300 acquired by the antenna 400 to the positioning module 600, and the positioning module 600 stores the antenna number and the characteristic information into a tag list; after the counting is finished, the positioning module 600 positions each reagent tube 200 according to the antenna number and the characteristic information, outputs a corresponding positioning result, and uploads the positioning result to the cloud platform.
Taking a reagent tube 200 stored in a reagent tray 100 as an example, the reagent tube 200 is defined as a target reagent tube, an electronic tag 300 embedded with the target reagent tube is defined as a target electronic tag, an antenna 400 for reading the target electronic tag is defined as an antenna a, and the positioning process of the positioning module 600 on the target reagent tube includes:
step 1, obtaining an ID number of a target electronic tag, and inquiring and reading an antenna A of the target electronic tag; if the number of the antennas A for reading the target electronic tag is one and only one, directly judging that the target reagent tube is positioned at the corresponding position of the antennas A; if the number of the antennas A for reading the target electronic tag is two or more, executing the next step;
step 2, if two or more antennas A for reading the target electronic tag exist, inquiring the RSSI intensity value of the target electronic tag read by each antenna A, comparing the intensity values of the RSSI intensity values, and taking the position of the antenna A corresponding to max { RSSI intensity value } as the position of the target reagent tube; if the RSSI intensity values read by two or more antennas A are the same, and the RSSI intensity values read by the antennas A are max { RSSI intensity values }, executing the next step;
step 3, inquiring the phase values of the target electronic tags read by the antennas A, comparing the magnitudes of the phase values, and taking the position of the antenna A corresponding to the min { phase value } as the position of the target reagent tube; if the phase values read by two or more antennas A are the same, and the RSSI intensity values read by the antennas A are all min { phase value }, executing the next step;
step 4, inquiring the reading times of the antennas A on the target electronic tag, comparing the reading times, and taking the position of the antenna A corresponding to max { the reading times } as the position of the target reagent tube;
cycling the steps 1-4 until all the reagent tubes 200 are positioned; the positioning module 600 can simultaneously position a plurality of reagent tubes 200 to ensure positioning efficiency.
In the invention, the target reagent tube is positioned progressively by the antenna 400, the RSSI intensity value, the phase value and the reading times, so that the target reagent tube can be positioned accurately under different recognition conditions conveniently, nearly 100% of accurate positioning of each reagent tube 200 on the reagent tray 100 is realized, the reagent tubes 200 are prevented from being taken by mistake, manual intervention is not needed, the positioning efficiency is high, and the workload of staff for counting is greatly reduced.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (6)
1. The medical reagent tube positioning method based on the RFID technology is characterized by comprising the following steps of:
s1, repeatedly reading characteristic information of an electronic tag which can be read through an antenna in a checking period, wherein the characteristic information comprises an ID number, an RSSI intensity value, a phase value and the reading times;
s2, positioning the reagent tube according to the antenna number of the antenna and the characteristic information read by the antenna, wherein the positioning process comprises the following steps:
s21, inquiring and reading an antenna A of the target electronic tag according to the ID number of the target electronic tag arranged on the target reagent tube;
if the antenna A for reading the target electronic tag is provided with only one antenna A, judging that the target reagent tube is positioned at the position corresponding to the antenna A;
if there are two or more antennas a for reading the target electronic tag, executing step S22;
s22, inquiring the RSSI intensity value of the target electronic tag read by each antenna A, comparing the intensity values of the RSSI intensity values, and taking the position of the antenna A corresponding to max { RSSI intensity value } as the position of the target reagent tube;
if the RSSI strength values read by two or more antennas a are both max { RSSI strength values }, step S23 is executed;
s23, inquiring the phase value of the target electronic tag read by the antenna A with the RSSI intensity value of max { RSSI intensity value }, comparing the magnitude of each phase value, and taking the position of the antenna A corresponding to min { phase value } as the position of the target reagent tube;
if the phase values read by two or more antennas a are all min { phase value }, executing step S24;
s24, inquiring the reading times of the antenna A with the phase value of min { phase value } to the target electronic tag, comparing the reading times, and taking the position of the antenna A corresponding to max { reading times } as the position of the target reagent tube.
2. A medical kit tube positioning system based on RFID technology, comprising:
the reagent tray is provided with a plurality of placing holes for placing the reagent tubes, and each placing hole is internally provided with a response signal which is used for sending out radio frequency signals to the electronic tags arranged on the reagent tubes and receiving the radio frequency signals reflected by the electronic tags;
the RFID reader is connected with the antenna and used for reading characteristic information of the electronic tag according to the response signal, wherein the characteristic information comprises an ID number, an RSSI intensity value, a phase value and the reading times;
and a positioning module for positioning the reagent tube according to the antenna number of the antenna and the characteristic information read by the antenna, wherein the positioning process comprises the following steps:
according to the ID number of the target electronic tag arranged on the target reagent tube, inquiring and reading the antenna A of the target electronic tag;
if the antenna A for reading the target electronic tag is provided with only one antenna A, judging that the target reagent tube is positioned at the position corresponding to the antenna A;
if the number of the antennas A for reading the target electronic tag is two or more, executing the next step;
querying the RSSI intensity value of the target electronic tag read by each antenna A, comparing the intensity values of the RSSI intensity values, and taking the position of the antenna A corresponding to max { RSSI intensity value } as the position of the target reagent tube;
if the RSSI intensity values read by two or more antennas A are max { RSSI intensity values }, executing the next step;
inquiring the phase value of the target electronic tag read by the antenna A with the RSSI intensity value of max { RSSI intensity value }, comparing the magnitude of each phase value, and taking the position of the antenna A corresponding to min { phase value } as the position of the target reagent tube;
if the phase values read by two or more antennas A are all min { phase value }, executing the next step;
inquiring the reading times of the antenna A with the phase value of min { phase value } to the target electronic tag, comparing the reading times, and taking the position of the antenna A corresponding to max { reading times } as the position of the target reagent tube.
3. The RFID technology-based medical reagent tube positioning system of claim 2, wherein the electronic tag is embedded in the bottom of the reagent tube, and the antenna is disposed at the bottom of its corresponding placement hole.
4. The system for positioning a medical reagent tube based on the RFID technology according to claim 2, further comprising an RS232 communication module, wherein the communication module is used for receiving a control instruction of the cloud platform, reporting a positioning result to the cloud platform, and connecting with the RFID reader and the positioning module.
5. The RFID technology based medical agent tube positioning system of claim 2, further comprising a power module for powering the RFID reader and the positioning module.
6. The RFID technology based medical agent tube positioning system of any one of claims 2-5, further comprising a trigger and/or timer, an output of the trigger and/or timer being coupled to a trigger of the RFID reader.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111354806.7A CN113947171B (en) | 2021-11-16 | 2021-11-16 | Medical reagent tube positioning method and system based on RFID technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111354806.7A CN113947171B (en) | 2021-11-16 | 2021-11-16 | Medical reagent tube positioning method and system based on RFID technology |
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| CN113947171A CN113947171A (en) | 2022-01-18 |
| CN113947171B true CN113947171B (en) | 2023-12-01 |
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|---|---|
| CN113947171A (en) | 2022-01-18 |
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