CN112201006A - Positioning tracking system based on RFID - Google Patents
Positioning tracking system based on RFID Download PDFInfo
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- CN112201006A CN112201006A CN202011072951.1A CN202011072951A CN112201006A CN 112201006 A CN112201006 A CN 112201006A CN 202011072951 A CN202011072951 A CN 202011072951A CN 112201006 A CN112201006 A CN 112201006A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/0205—Specific application combined with child monitoring using a transmitter-receiver system
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- G06—COMPUTING OR CALCULATING; 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 provisions 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 provisions 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
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/0772—Physical layout of the record carrier
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/0261—System arrangements wherein the object is to detect trespassing over a fixed physical boundary, e.g. the end of a garden
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/0275—Electronic Article Surveillance [EAS] tag technology used for parent or child unit, e.g. same transmission technology, magnetic tag, RF tag, RFID
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- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
- G08B21/0407—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons based on behaviour analysis
- G08B21/043—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons based on behaviour analysis detecting an emergency event, e.g. a fall
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
- G08B21/0438—Sensor means for detecting
- G08B21/0446—Sensor means for detecting worn on the body to detect changes of posture, e.g. a fall, inclination, acceleration, gait
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Abstract
The invention discloses a positioning and tracking system based on RFID (radio frequency identification devices), which comprises a display terminal, a server, a patient information management module, a monitoring module, a motion monitoring module, a database, an alarm module, a rescue module and a data input module, wherein the display terminal is connected with the server through a network; the monitoring module is used for positioning the position information of the patient; according to the invention, the RFID electronic tag is bound with the patient, the RFID card reader or the handheld radio frequency receiver is adopted to carry out positioning tracking on the patient, so that the monitoring module can continuously receive the position information of the patient, positioning tracking after the patient is lost can also be realized, the safety supervision of the patient is ensured, meanwhile, the state of the patient in the action process is monitored in real time through the motion monitoring module, early warning is timely carried out when the patient falls down or is in a coma, the position information of the patient is positioned in real time through the monitoring module, and then corresponding rescue workers are distributed for rescue through the rescue module, so that the safety of the patient is ensured.
Description
Technical Field
The invention belongs to the technical field of Internet of things, and particularly relates to a positioning and tracking system based on RFID.
Background
RFID, radio frequency identification, is a communication technology that can identify a specific target and read and write related data by radio signals without establishing mechanical or optical contact between an identification system and the specific target; therefore, the RFID is a non-contact automatic identification technology, can be quickly read and written, can be tracked and managed for a long time, and has a very good development prospect in the field of intelligent identification.
At present, managers in the environments of nursing centers, special personnel positioning and the like rely on fixed cameras to monitor certain specific areas, all patients cannot be positioned, if a certain manager looks for a certain specified patient, a large amount of time is needed to look over and examine the ward or look over the ward from other places in the hospital, and the manager needs to look over medical information such as patient medical history and the like in a pile of data. In addition, some patients may leave their beds or leave hospitals and get lost, when the patients arrive in some unsafe zones, the patients cannot be provided with alarm information, and managers cannot know the positions of the patients; especially, the elderly are inconvenient to move and fragile in body, and may be accidentally fallen or even coma due to cerebral thrombosis, myocardial infarction and other accidents, and if the elderly are not treated in time, the elderly are easy to get worse or even die; to this end, we propose an RFID-based location tracking system.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a positioning and tracking system based on RFID. The invention provides a RFID-based mode for binding an RFID electronic tag with a patient, an RFID card reader or a handheld radio frequency receiver is adopted for positioning and tracking the patient, so that a monitoring module can continuously receive position information of the patient to effectively realize the monitoring of the patient, the positioning and tracking after the patient loses can be realized, the safety supervision of the patient is ensured, meanwhile, the state of the patient in the action process is monitored in real time through a motion monitoring module, when the patient falls down or is in a coma, early warning is timely carried out, the position information of the patient is positioned in real time through the monitoring module, then corresponding rescue workers are distributed through the rescue module for rescue, and the rescue workers accurately position and track the patient through the handheld radio frequency receiver, so that the safety of the patient is ensured.
The purpose of the invention can be realized by the following technical scheme:
a positioning tracking system based on RFID comprises a display terminal, a server, a patient information management module, a monitoring module, a motion monitoring module, a database, an alarm module, a rescue module and a data input module;
the patient information management module is used for managing the information of the patient;
the monitoring module is used for positioning and tracking patients and interacting patient information with the patient information management module, and comprises an RFID electronic tag, an RFID card reader and a processor;
the database stores the RFID electronic tag number corresponding to each patient;
motion monitoring module is used for carrying out real-time supervision to patient's state at the in-process of moving, motion monitoring module includes pressure sensor, height sensor, first acceleration sensor and second acceleration sensor, pressure sensor sets up in patient's sole, height sensor and first acceleration sensor set up on wearing formula bracelet, second acceleration sensor sets up on RFID electronic tags, motion monitoring module's specific monitoring process as follows:
the method comprises the following steps: the pressure sensor is used for monitoring the pressure of the sole in real time and is marked as NAi, i is 1, …, n;
if the NAi is less than or equal to the preset pressure threshold, the state is to be verified;
step two: when the patient is in a to-be-verified state, acquiring a first acceleration of the patient in real time through a first acceleration sensor and marking the first acceleration as JS1, and acquiring a second acceleration of the patient in real time through a second acceleration sensor and marking the second acceleration as JS 2; comparing the first acceleration JS1 with the second acceleration JS 2;
step three: if the first acceleration JS1 and the second acceleration JS2 are both within a preset acceleration threshold range, calculating an error between the first acceleration JS1 and the second acceleration JS2, namely f ═ (JS1-JS2)/JS 1;
if the absolute value f is less than or equal to 10%, judging that a suspected tumble accident occurs;
step four: when a suspected fall accident occurs, acquiring height information of a patient in real time through a height sensor, marking the height information as HSi, and setting an initial height as H0; the height change value HBi — H0-HSi;
if the altitude variation value HBi is greater than or equal to a preset first altitude variation threshold value, the patient is considered to be in a falling state and a falling signal is generated;
step five: when the patient is in a falling state, judging that the patient is in a coma state or the arms lose the activity ability and generating a coma signal if the second acceleration JS2 is smaller than a preset value within the next preset time;
when the patient is in a falling state, in the next preset time, if the height variation values HBi are all larger than or equal to a preset first height variation threshold value, judging that the patient is in a coma state or the arms lose the activity ability and generating a coma signal;
the motion monitoring module is used for transmitting a falling signal and a coma signal to the server, the server receives the falling signal, the coma signal and the alarm signal and then controls the alarm module to send out an alarm, and transmits the falling signal, the coma signal and the alarm signal to the monitoring module, and the monitoring module is used for receiving the falling signal, the coma signal and the alarm signal, then acquiring the position information of a patient and transmitting the position information of the patient to the display terminal for real-time display;
the monitoring module is used for positioning the position information of the patient, the RFID electronic tags are bound with the patient and send radio frequency signals, and each RFID electronic tag has a unique number; the monitoring module comprises the following specific working steps:
SS 1: dividing a monitoring range into a plurality of areas, installing RFID card readers at different positions of each area as positioning base stations, and connecting the server and each RFID electronic tag with each RFID card reader in a wireless manner;
SS 2: the RFID card reader is used for receiving the radio frequency signal sent by the RFID electronic tag and replying response information to the radio frequency signal, and the RFID electronic tag continues to send the radio frequency signal when receiving the response information of the RFID card reader; the RFID card readers at different positions all have unique address codes;
when the RFID electronic tag enters a card reading range of a positioning base station, reading RFID electronic tag information and transmitting the RFID electronic tag information to a processor through an RFID card reader, wherein the information received by the processor comprises the RFID card reader and the RFID electronic tag information, and positioning the position of the RFID electronic tag according to the configured RFID card reader and a position mapping table; the position of the RFID electronic tag is the position information of the patient;
SS 3: when the RFID electronic tag does not receive the response information of the RFID card reader within a preset time period, the RFID electronic tag sends an alarm signal to the monitoring module, and a wireless unit in the RFID electronic tag detects the position of the patient and sends the position information to the monitoring module.
Further, the information of the patient includes name, identification card number, sex, age and address; the RFID electronic tag comprises a single chip microcomputer, a communication unit and a wireless unit, wherein the single chip microcomputer is used for controlling the communication unit and the wireless unit, the wireless unit is used for detecting the position of a patient through GSM, GPRS or Ethernet to obtain position information and sending the position information to the monitoring module, and the communication unit is used for sending the position information positioned by the processor to the monitoring module in a Zigbee, GPRS or SMS mode; and an alarm button is arranged on the RFID electronic tag.
Further, the monitoring module is used for receiving the fall signal, the coma signal and the alarm signal and then acquiring the position information of the patient and transmitting the position information of the patient to the rescue module, the rescue module is used for allocating corresponding rescue personnel for rescue, and the specific allocation steps are as follows:
s1: acquiring the current staff in an idle state and marking the staff as a primary selection staff; marking the position information of the patient as a rescue position;
s2: sending a position acquisition instruction to a mobile phone terminal of the initially selected person to acquire the position of the initially selected person, calculating the distance difference between the position of the initially selected person and the rescue position to obtain a person distance, and marking the person distance as JL;
s3: acquiring the age of the primary election person and marking the age as NL; setting the rescue frequency of the initially selected personnel as CS;
s4: analyzing and calculating the positioning value according to the registration information of the primary selection personnel; the method comprises the following steps:
s41: setting all models of the handheld radio frequency receiver to correspond to a preset value, matching the model of the handheld radio frequency receiver of the primary selection personnel with all models to obtain the corresponding preset value, and marking the preset value as DS;
s42: calculating the time difference between the purchase time of the handheld radio frequency receiver of the primary selection person and the current time of the system to obtain the purchase duration of the handheld radio frequency receiver of the primary selection person, and marking the purchase duration as GC;
s43: because the ratio of the preset value corresponding to the model of the handheld radio frequency receiver to the evaluation of the purchase duration of the handheld radio frequency receiver to the positioning value is different, a correction value is added to each of the DS and the GC, the correction values corresponding to the DS and the GC are respectively B1 and B2, and B1 is greater than B2;
s44: using formulas
Acquiring a positioning value CJ of the primary selection personnel; wherein λ is a correction coefficient, and the value is 0.584212;
s5: carrying out dequantization processing on the personnel distance, the age, the rescue times and the positioning value and taking the values;
s6: using formulas
Calculating to obtain a measurement and distribution value WS of the primary election personnel; wherein QT is the inefficiency value of the primary; a1, a2, a3, a4 and a5 are all preset coefficient factors;
s7: marking the primary selected person with the maximum measured and matched value as a rescue person, and increasing the rescue frequency of the rescue person by one;
the rescue module sends the rescue position to a mobile phone terminal of a rescuer, and marks the time of sending the rescue position as a position sending time;
after the rescue personnel receive the rescue position through the mobile phone terminal, the rescue personnel arrive at the rescue position and accurately position and track the patient through the handheld radio frequency receiver, the time of arriving at the patient is marked as the position arrival time, the time difference between the position arrival time and the position sending time is calculated to obtain the buffering time of the rescue personnel and is marked as T1, and the value of the score input by the patient is set as V1;
obtaining a single value of the rescue worker by using a formula QE (T1 × b1+1/V1 × b 2), summing all the single values of the rescue worker, and averaging to obtain an inefficient value of the rescue worker; and b1 and b2 are both preset proportionality coefficients.
Further, the data input module is used for a manager to input demand information and transmit the demand information to the server, wherein the demand information comprises the name and the identification number of the patient; the server calls the RFID electronic tag number corresponding to the patient from the database according to the demand information and transmits the RFID electronic tag number to the monitoring module, and the monitoring module is used for acquiring the position information of the RFID electronic tag according to the RFID electronic tag number and transmitting the position information of the RFID electronic tag to the display terminal for real-time display.
Further, the handheld radio frequency receiver is used for receiving the radio frequency signal sent by the RFID electronic tag by the rescue personnel.
The system further comprises a registration login module, wherein the registration login module is used for submitting registration information for registration through a mobile phone terminal by a worker and sending the successfully registered registration information to the server for storage; the registration information comprises name, mobile phone number, age, model of the handheld radio frequency receiver and purchase time of the handheld radio frequency receiver.
The invention has the beneficial effects that:
1. the RFID electronic tag is bound with a patient based on an RFID mode, and the patient is positioned and tracked by adopting an RFID card reader or a handheld radio frequency receiver, so that a monitoring module can continuously receive position information of the patient to effectively realize the monitoring of the patient;
2. the invention monitors the state of a patient in the action process in real time through the motion monitoring module, and monitors the sole pressure, the first acceleration, the second acceleration and the height information; judging whether the patient falls down or is in coma; when a patient falls down or is in a coma, early warning is timely carried out, the position information of the patient is located in real time through the monitoring module, then corresponding rescue personnel are distributed through the rescue module to carry out rescue, and the rescue personnel carry out accurate positioning tracking on the patient through the handheld radio frequency receiver, so that the safety of the patient is guaranteed.
3. According to the invention, the demand information is input through the data input module and is transmitted to the server, the server calls the RFID electronic tag number corresponding to the patient from the database according to the demand information and transmits the RFID electronic tag number to the monitoring module, and the monitoring module is used for acquiring the position information of the RFID electronic tag according to the RFID electronic tag number and transmitting the position information of the RFID electronic tag to the display terminal for real-time display, so that comprehensive and accurate positioning of all patients is realized.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a block diagram of the system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a positioning and tracking system based on RFID includes a display terminal, a server, a patient information management module, a monitoring module, a motion monitoring module, a database, an alarm module, a rescue module, and a data input module;
the patient information management module is used for managing the information of the patient, and the information of the patient comprises a name, an identity card number, a sex, an age and an address;
the monitoring module is used for positioning and tracking patients and interacting patient information with the patient information management module, and comprises RFID electronic tags, an RFID card reader and a processor, wherein the RFID electronic tags are bound with the patients and send radio frequency signals, and each RFID electronic tag has a unique serial number;
the database stores the RFID electronic tag number corresponding to each patient;
dividing a monitoring range into a plurality of areas, installing RFID card readers as positioning base stations at different positions of each area, wherein the server and each RFID electronic tag are in radio connection with each RFID card reader, the RFID card readers are used for receiving radio frequency signals sent by the RFID electronic tags and replying response information to the radio frequency signals, and the RFID electronic tags continue to send the radio frequency signals when receiving the response information of the RFID card readers; the RFID card readers at different positions all have unique address codes, when the RFID electronic tags enter the card reading range of the positioning base station, the RFID electronic tag information is read and transmitted to the processor through the RFID card readers, the information received by the processor comprises the RFID card readers and the RFID electronic tag information, and the positions of the RFID electronic tags are positioned according to the configured RFID card readers and the position mapping table;
when the RFID electronic tag does not receive response information of the RFID card reader within a preset time period, the RFID electronic tag sends an alarm signal to the monitoring module, and a wireless unit in the RFID electronic tag detects the position of a patient and sends position information to the monitoring module;
the RFID electronic tag comprises a single chip microcomputer, a communication unit and a wireless unit, wherein the single chip microcomputer is used for controlling the communication unit and the wireless unit, the wireless unit is used for detecting the position of a patient through GSM, GPRS or Ethernet to obtain position information and sending the position information to the monitoring module, and the communication unit is used for sending the position information positioned by the processor to the monitoring module in a Zigbee, GPRS or SMS mode;
the alarm module is used for alarming to a manager after receiving the alarm signal;
motion monitoring module is used for carrying out real-time supervision to patient's state at the in-process of moving, motion monitoring module includes pressure sensor, height sensor, first acceleration sensor and second acceleration sensor, pressure sensor sets up in patient's sole, height sensor and first acceleration sensor set up on wearing formula bracelet, second acceleration sensor sets up on RFID electronic tags, motion monitoring module's specific monitoring process as follows:
the method comprises the following steps: the pressure sensor is used for monitoring the pressure of the sole in real time and is marked as NAi, i is 1, …, n;
if the NAi is less than or equal to the preset pressure threshold, the state is to be verified;
step two: when the patient is in a to-be-verified state, acquiring a first acceleration of the patient in real time through a first acceleration sensor and marking the first acceleration as JS1, and acquiring a second acceleration of the patient in real time through a second acceleration sensor and marking the second acceleration as JS 2; comparing the first acceleration JS1 with the second acceleration JS 2;
step three: if the first acceleration JS1 and the second acceleration JS2 are both within a preset acceleration threshold range, calculating an error between the first acceleration JS1 and the second acceleration JS2, namely f ═ (JS1-JS2)/JS 1;
if the absolute value f is less than or equal to 10%, judging that a suspected tumble accident occurs;
step four: when a suspected fall accident occurs, acquiring height information of a patient in real time through a height sensor, marking the height information as HSi, and setting an initial height as H0; the height change value HBi — H0-HSi;
if the altitude variation value HBi is greater than or equal to a preset first altitude variation threshold value, the patient is considered to be in a falling state and a falling signal is generated;
step five: when the patient is in a falling state, judging that the patient is in a coma state or the arms lose the activity ability and generating a coma signal if the second acceleration JS2 is smaller than a preset value within the next preset time;
when the patient is in a falling state, in the next preset time, if the height variation values HBi are all larger than or equal to a preset first height variation threshold value, judging that the patient is in a coma state or the arms lose the activity ability and generating a coma signal;
the motion monitoring module is used for transmitting a falling signal and a coma signal to the server, the server receives the falling signal, the coma signal and the alarm signal and then controls the alarm module to send out an alarm, and transmits the falling signal, the coma signal and the alarm signal to the monitoring module, and the monitoring module is used for receiving the falling signal, the coma signal and the alarm signal, then acquiring the position information of a patient and transmitting the position information of the patient to the display terminal for real-time display;
the RFID electronic tag is provided with an alarm button, and when a patient presses the alarm button in trouble or danger, the processor generates an alarm signal and transmits the alarm signal to the server;
the monitoring module is used for acquiring the position information of the patient and transmitting the position information of the patient to the rescue module after receiving the falling signal, the coma signal and the alarm signal, the rescue module is used for distributing corresponding rescue personnel for rescue, and the specific distribution steps are as follows:
s1: acquiring the current staff in an idle state and marking the staff as a primary selection staff; marking the position information of the patient as a rescue position;
s2: sending a position acquisition instruction to a mobile phone terminal of the initially selected person to acquire the position of the initially selected person, calculating the distance difference between the position of the initially selected person and the rescue position to obtain a person distance, and marking the person distance as JL;
s3: acquiring the age of the primary election person and marking the age as NL; setting the rescue frequency of the initially selected personnel as CS;
s4: analyzing and calculating the positioning value according to the registration information of the primary selection personnel; the method comprises the following steps:
s41: setting all models of the handheld radio frequency receiver to correspond to a preset value, matching the model of the handheld radio frequency receiver of the primary selection personnel with all models to obtain the corresponding preset value, and marking the preset value as DS;
s42: calculating the time difference between the purchase time of the handheld radio frequency receiver of the primary selection person and the current time of the system to obtain the purchase duration of the handheld radio frequency receiver of the primary selection person, and marking the purchase duration as GC;
s43: because the ratio of the preset value corresponding to the model of the handheld radio frequency receiver to the evaluation of the purchase duration of the handheld radio frequency receiver to the positioning value is different, a correction value is added to each of the DS and the GC, the correction values corresponding to the DS and the GC are respectively B1 and B2, and B1 is greater than B2;
s44: using formulas
Acquiring a positioning value CJ of the primary selection personnel; wherein λ is a correction coefficient, and the value is 0.584212;
s5: carrying out dequantization processing on the personnel distance, the age, the rescue times and the positioning value and taking the values;
s6: using formulas
Calculating to obtain a measurement and distribution value WS of the primary election personnel; wherein QT is the inefficiency value of the primary; a1, a2, a3, a4 and a5 are all preset coefficient factors;
s7: marking the primary selected person with the maximum measured and matched value as a rescue person, and increasing the rescue frequency of the rescue person by one;
the rescue module sends the rescue position to a mobile phone terminal of a rescuer, and marks the time of sending the rescue position as a position sending time;
after the rescue personnel receive the rescue position through the mobile phone terminal, the rescue personnel arrive at the rescue position and accurately position and track the patient through the handheld radio frequency receiver, the time of arriving at the patient is marked as the position arrival time, the time difference between the position arrival time and the position sending time is calculated to obtain the buffering time of the rescue personnel and is marked as T1, and the value of the score input by the patient is set as V1;
obtaining a single value of the rescue worker by using a formula QE (T1 × b1+1/V1 × b 2), summing all the single values of the rescue worker, and averaging to obtain an inefficient value of the rescue worker; b1 and b2 are both preset proportionality coefficients;
the handheld radio frequency receiver is used for receiving radio frequency signals sent by the RFID electronic tag by rescuers so as to accurately position and track the patient;
the data input module is used for a manager to input demand information and transmit the demand information to the server, wherein the demand information comprises the name and the identification number of a patient; the server calls the RFID electronic tag number corresponding to the patient from the database according to the demand information and transmits the RFID electronic tag number to the monitoring module, and the monitoring module is used for acquiring the position information of the RFID electronic tag and transmitting the position information of the RFID electronic tag to the display terminal for real-time display.
When the positioning and tracking system based on the RFID works, firstly, a monitoring module is used for performing monitoring application processing of positioning and tracking on a patient and interacting patient information with a patient information management module, a monitoring range is divided into a plurality of areas, RFID card readers are installed at different positions of each area to serve as positioning base stations, the RFID card readers are used for receiving radio frequency signals sent by RFID electronic tags and replying response information to the radio frequency signals, and the RFID electronic tags continue to send the radio frequency signals when receiving the response information of the RFID card readers; when the RFID electronic tag enters a card reading range of a positioning base station, reading RFID electronic tag information and transmitting the RFID electronic tag information to a processor through an RFID card reader, wherein the information received by the processor comprises the RFID card reader and the RFID electronic tag information, and positioning the position of the RFID electronic tag according to the configured RFID card reader and a position mapping table;
when the RFID electronic tag does not receive response information of the RFID card reader within a preset time period, judging that the patient leaves a monitoring range, sending an alarm signal to the monitoring module by the RFID electronic tag, and detecting the position of the patient by a wireless unit in the RFID electronic tag and sending the position information to the monitoring module; the monitoring module is used for acquiring the position information of the patient after receiving the alarm signal and transmitting the position information of the patient to the rescue module;
the motion monitoring module is used for monitoring the state of a patient in the motion process in real time, and comprises a pressure sensor, a height sensor, a first acceleration sensor and a second acceleration sensor, wherein the pressure sensor is arranged on the sole of the patient, the height sensor and the first acceleration sensor are arranged on the wearable bracelet, and the second acceleration sensor is arranged on the RFID electronic tag; monitoring sole pressure, first acceleration, second acceleration and height information; judging whether a patient falls down or coma, wherein the motion monitoring module is used for transmitting a fall signal and a coma signal to the server, the server receives the fall signal, the coma signal and the alarm signal and then controls the alarm module to send out an alarm, and transmits the fall signal, the coma signal and the alarm signal to the monitoring module, and the monitoring module is used for receiving the fall signal, the coma signal and the alarm signal, then acquiring the position information of the patient and transmitting the position information of the patient to the display terminal for real-time display;
the monitoring module is used for acquiring the position information of the patient after receiving the falling signal, the coma signal and the alarm signal and transmitting the position information of the patient to the rescue module, and the rescue module is used for allocating corresponding rescue personnel for rescue, acquiring the current working personnel in an idle state and marking the working personnel as primary selection personnel; marking the position information of the patient as a rescue position; sending a position acquisition instruction to a mobile phone terminal of the primary selected person to acquire the position of the primary selected person, calculating the distance difference between the position of the primary selected person and the rescue position to acquire the distance of the person, acquiring the age of the primary selected person, and setting the rescue frequency of the primary selected person as CS; analyzing and calculating the positioning value according to the registration information of the primary selection personnel; carrying out dequantization processing on the personnel distance, the age, the rescue times and the positioning value and taking the values; the measurement and distribution value of the first-selected person is obtained through calculation by combining a correlation algorithm, the first-selected person with the maximum measurement and distribution value is marked as a rescue person, the rescue module sends the rescue position to a mobile phone terminal of the rescue person, and the rescue person accurately positions and tracks the patient through a handheld radio frequency receiver.
The above formulas are all obtained by collecting a large amount of data to perform software simulation and performing parameter setting processing by corresponding experts, and the formulas are in accordance with real results.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. A positioning tracking system based on RFID is characterized by comprising a display terminal, a server, a patient information management module, a monitoring module, a motion monitoring module, a database, an alarm module, a rescue module and a data input module;
the patient information management module is used for managing patient information;
the monitoring module is used for positioning and tracking patients and interacting patient information with the patient information management module, and comprises an RFID electronic tag, an RFID card reader and a processor;
the database stores the RFID electronic tag number corresponding to each patient;
motion monitoring module is used for carrying out real-time supervision to patient's state at the in-process of moving, motion monitoring module includes pressure sensor, height sensor, first acceleration sensor and second acceleration sensor, pressure sensor sets up in patient's sole, height sensor and first acceleration sensor set up on wearing formula bracelet, second acceleration sensor sets up on RFID electronic tags, motion monitoring module's specific monitoring process as follows:
the method comprises the following steps: the pressure sensor is used for monitoring the pressure of the sole in real time and is marked as NAi, i is 1, …, n;
if the NAi is less than or equal to the preset pressure threshold, the state is to be verified;
step two: when the patient is in a to-be-verified state, acquiring a first acceleration of the patient in real time through a first acceleration sensor and marking the first acceleration as JS1, and acquiring a second acceleration of the patient in real time through a second acceleration sensor and marking the second acceleration as JS 2; comparing the first acceleration JS1 with the second acceleration JS 2;
step three: if the first acceleration JS1 and the second acceleration JS2 are both within a preset acceleration threshold range, calculating an error between the first acceleration JS1 and the second acceleration JS2, namely f ═ (JS1-JS2)/JS 1;
if the absolute value f is less than or equal to 10%, judging that a suspected tumble accident occurs;
step four: when a suspected fall accident occurs, acquiring height information of a patient in real time through a height sensor, marking the height information as HSi, and setting an initial height as H0; the height change value HBi — H0-HSi;
if the altitude variation value HBi is greater than or equal to a preset first altitude variation threshold value, the patient is considered to be in a falling state and a falling signal is generated;
step five: when the patient is in a falling state, judging that the patient is in a coma state or the arms lose the activity ability and generating a coma signal if the second acceleration JS2 is smaller than a preset value within the next preset time;
when the patient is in a falling state, in the next preset time, if the height variation values HBi are all larger than or equal to a preset first height variation threshold value, judging that the patient is in a coma state or the arms lose the activity ability and generating a coma signal;
the motion monitoring module is used for transmitting a falling signal and a coma signal to the server, the server receives the falling signal, the coma signal and the alarm signal and then controls the alarm module to send out an alarm, and transmits the falling signal, the coma signal and the alarm signal to the monitoring module, and the monitoring module is used for receiving the falling signal, the coma signal and the alarm signal, then acquiring the position information of a patient and transmitting the position information of the patient to the display terminal for real-time display;
the monitoring module is used for positioning the position information of the patient, the RFID electronic tags are bound with the patient and send radio frequency signals, and each RFID electronic tag has a unique number; the monitoring module comprises the following specific working steps:
SS 1: dividing a monitoring range into a plurality of areas, installing RFID card readers at different positions of each area as positioning base stations, and connecting the server and each RFID electronic tag with each RFID card reader in a wireless manner;
SS 2: the RFID card reader is used for receiving the radio frequency signal sent by the RFID electronic tag and replying response information to the radio frequency signal, and the RFID electronic tag continues to send the radio frequency signal when receiving the response information of the RFID card reader; the RFID card readers at different positions all have unique address codes;
when the RFID electronic tag enters a card reading range of a positioning base station, reading RFID electronic tag information and transmitting the RFID electronic tag information to a processor through an RFID card reader, wherein the information received by the processor comprises the RFID card reader and the RFID electronic tag information, and positioning the position of the RFID electronic tag according to the configured RFID card reader and a position mapping table; the position of the RFID electronic tag is the position information of the patient;
SS 3: when the RFID electronic tag does not receive the response information of the RFID card reader within a preset time period, the RFID electronic tag sends an alarm signal to the monitoring module, and a wireless unit in the RFID electronic tag detects the position of the patient and sends the position information to the monitoring module.
2. The RFID-based location tracking system of claim 1, wherein the patient information includes name, identification number, gender, age, and address; the RFID electronic tag comprises a single chip microcomputer, a communication unit and a wireless unit, wherein the single chip microcomputer is used for controlling the communication unit and the wireless unit, the wireless unit is used for detecting the position of a patient through GSM, GPRS or Ethernet to obtain position information and sending the position information to the monitoring module, and the communication unit is used for sending the position information positioned by the processor to the monitoring module in a Zigbee, GPRS or SMS mode; and an alarm button is arranged on the RFID electronic tag.
3. The RFID-based positioning and tracking system according to claim 1, wherein the monitoring module is configured to obtain the position information of the patient after receiving the fall signal, the coma signal and the alarm signal, and transmit the position information of the patient to the rescue module, the rescue module is configured to allocate corresponding rescuers for rescue, and the specific allocation steps are as follows:
s1: acquiring the current staff in an idle state and marking the staff as a primary selection staff; marking the position information of the patient as a rescue position;
s2: sending a position acquisition instruction to a mobile phone terminal of the initially selected person to acquire the position of the initially selected person, calculating the distance difference between the position of the initially selected person and the rescue position to obtain a person distance, and marking the person distance as JL;
s3: acquiring the age of the primary election person and marking the age as NL; setting the rescue frequency of the initially selected personnel as CS;
s4: analyzing and calculating the positioning value according to the registration information of the primary selection personnel; the method comprises the following steps:
s41: setting all models of the handheld radio frequency receiver to correspond to a preset value, matching the model of the handheld radio frequency receiver of the primary selection personnel with all models to obtain the corresponding preset value, and marking the preset value as DS;
s42: calculating the time difference between the purchase time of the handheld radio frequency receiver of the primary selection person and the current time of the system to obtain the purchase duration of the handheld radio frequency receiver of the primary selection person, and marking the purchase duration as GC;
s43: because the ratio of the preset value corresponding to the model of the handheld radio frequency receiver to the evaluation of the purchase duration of the handheld radio frequency receiver to the positioning value is different, a correction value is added to each of the DS and the GC, the correction values corresponding to the DS and the GC are respectively B1 and B2, and B1 is greater than B2;
s44: using formulas
Acquiring a positioning value CJ of the primary selection personnel; wherein λ is a correction coefficient, and the value is 0.584212;
s5: carrying out dequantization processing on the personnel distance, the age, the rescue times and the positioning value and taking the values;
s6: using formulas
Calculating to obtain a measurement and distribution value WS of the primary election personnel; wherein QT is the inefficiency value of the primary; a1, a2, a3, a4 and a5 are all preset coefficient factors;
s7: marking the primary selected person with the maximum measured and matched value as a rescue person, and increasing the rescue frequency of the rescue person by one;
the rescue module sends the rescue position to a mobile phone terminal of a rescuer, and marks the time of sending the rescue position as a position sending time;
after the rescue personnel receive the rescue position through the mobile phone terminal, the rescue personnel arrive at the rescue position and accurately position and track the patient through the handheld radio frequency receiver, the time of arriving at the patient is marked as the position arrival time, the time difference between the position arrival time and the position sending time is calculated to obtain the buffering time of the rescue personnel and is marked as T1, and the value of the score input by the patient is set as V1;
obtaining a single value of the rescue worker by using a formula QE (T1 × b1+1/V1 × b 2), summing all the single values of the rescue worker, and averaging to obtain an inefficient value of the rescue worker; and b1 and b2 are both preset proportionality coefficients.
4. The RFID-based positioning and tracking system of claim 1, wherein the data input module is used for a manager to input requirement information and transmit the requirement information to the server, and the requirement information comprises the name and identification number of the patient; the server calls the RFID electronic tag number corresponding to the patient from the database according to the demand information and transmits the RFID electronic tag number to the monitoring module, and the monitoring module is used for acquiring the position information of the RFID electronic tag according to the RFID electronic tag number and transmitting the position information of the RFID electronic tag to the display terminal for real-time display.
5. The RFID-based location tracking system of claim 3, wherein the handheld radio frequency receiver is configured to receive the radio frequency signal transmitted by the RFID tag for rescue personnel.
6. The RFID-based positioning and tracking system according to claim 1, further comprising a registration and login module, wherein the registration and login module is used for a worker to submit registration information through a mobile phone terminal for registration and send the registration information of successful registration to the server for storage; the registration information comprises name, mobile phone number, age, model of the handheld radio frequency receiver and purchase time of the handheld radio frequency receiver.
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