WO2022138042A1 - Dispositif et système de communication sans fil - Google Patents

Dispositif et système de communication sans fil Download PDF

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Publication number
WO2022138042A1
WO2022138042A1 PCT/JP2021/044237 JP2021044237W WO2022138042A1 WO 2022138042 A1 WO2022138042 A1 WO 2022138042A1 JP 2021044237 W JP2021044237 W JP 2021044237W WO 2022138042 A1 WO2022138042 A1 WO 2022138042A1
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WO
WIPO (PCT)
Prior art keywords
wireless communication
communication device
condition
radio wave
control unit
Prior art date
Application number
PCT/JP2021/044237
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English (en)
Japanese (ja)
Inventor
明彦 柴田
博史 土基
Original Assignee
株式会社村田製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社村田製作所 filed Critical 株式会社村田製作所
Priority to JP2022572043A priority Critical patent/JPWO2022138042A1/ja
Publication of WO2022138042A1 publication Critical patent/WO2022138042A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks

Definitions

  • the present invention relates to a wireless communication device and a wireless communication system using the wireless communication device.
  • a stick-type biosensor for example, a stick-type thermometer
  • a wireless communication function which is attached to a living body to measure biological information such as the body temperature of the living body and transmit the measurement data wirelessly (radio).
  • a stick-type biosensor for example, a stick-type thermometer
  • a wireless communication function which is attached to a living body to measure biological information such as the body temperature of the living body and transmit the measurement data wirelessly (radio).
  • Patent Document 2 describes a receiving device that receives data by establishing a connection (connection state) with a specific transmitting device from among a plurality of transmitting devices (for example, the above-mentioned attached biosensor), and is the most radio wave.
  • a receiving device connected to a high-strength transmitting device is disclosed. More specifically, this receiving device includes a receiving unit and a control unit, and is configured to be capable of wireless communication with a plurality of transmitting devices that transmit signals including biometric information through different channels.
  • the receiving unit receives a signal from each transmitting device while switching channels.
  • the control unit determines the channel of the signal having the highest intensity among the plurality of signals received by the reception unit, and sets the determined channel as a monitoring channel for monitoring biological information thereafter.
  • the channel of the transmitting device since the channel of the signal having the highest strength is set as the monitoring channel, the channel of the transmitting device can be set easily and quickly without the need for manual input of the channel number or the like.
  • the radio field intensity is usually unstable and can easily change depending on, for example, the surrounding environment. Therefore, for example, when a plurality of transmitting devices (wireless communication devices) are present at the same distance from the receiving device (wireless communication device), the transmitting device (wireless communication device) showing the strongest radio wave strength may fluctuate. In such a case, the technique (reception device) disclosed in Patent Document 2 described above may connect to an unintended transmission device (wireless communication device).
  • the present invention has been made to solve the above problems, and in a wireless communication device that establishes a connection with a wireless communication device and performs wireless communication, without newly adding a dedicated component or the like (that is,). It is an object of the present invention to provide a wireless communication device capable of preventing connection with an unintended wireless communication device (without increasing the cost), and a wireless communication system using the wireless communication device.
  • the wireless communication device is a wireless communication device that establishes a connection with a wireless communication device and performs wireless communication, and is a wireless communication unit that transmits and receives radio waves to and from the wireless communication device, and a plurality of wireless communication devices. It is provided with a connection control unit that selects a wireless communication device to be connected from among the plurality of wireless communication devices when a radio wave from is received.
  • the connection control unit is a wireless communication that satisfies the first condition that the radio wave strength of the radio wave received by the wireless communication unit is the strongest and the radio wave strength is stronger than the next strongest radio wave strength by a predetermined value or more or a predetermined ratio or more. Select the device as the wireless communication device to establish the connection.
  • the wireless communication device when radio waves from a plurality of wireless communication devices are received, the radio wave strength of the received radio waves is the strongest, and the radio wave strength is higher than the radio wave strength of the next strongest.
  • a wireless communication device that satisfies the first condition of being stronger than a predetermined value or a predetermined ratio or more is selected as the wireless communication device for establishing a connection. That is, when radio waves from a plurality of wireless communication devices are received, a wireless communication device having a clearly stronger radio wave strength than the other wireless communication devices is selected from the plurality of wireless communication devices. Therefore, it is possible to prevent connection with an unintended wireless communication device.
  • the wireless communication device in order to establish a connection, the user simply brings the wireless communication device in the vicinity of the wireless communication device (closes the wireless communication device and the wireless communication device), for example.
  • a dedicated new component such as a display or a selection switch.
  • FIG. 1 It is a figure which shows the structure of the wireless communication system which used the wireless communication apparatus which concerns on embodiment. It is a block diagram which shows the functional structure of the wireless communication apparatus which concerns on embodiment. It is a figure for demonstrating operation of the wireless communication system (wireless communication apparatus) which concerns on embodiment. It is a figure for demonstrating operation of the wireless communication system (wireless communication apparatus) which concerns on embodiment. It is a figure for demonstrating operation of the wireless communication system (wireless communication apparatus) which concerns on embodiment. It is a figure for demonstrating operation of the wireless communication system (wireless communication apparatus) which concerns on embodiment. It is a figure for demonstrating operation of the wireless communication system (wireless communication apparatus) which concerns on embodiment. It is a figure which shows the structure of the wireless communication system which used the wireless communication apparatus which concerns on a modification.
  • FIG. 1 is a diagram showing a configuration of a wireless communication system 1 using a wireless communication device 20.
  • FIG. 2 is a block diagram showing a functional configuration of the wireless communication device 20.
  • the wireless communication system 1 is mainly configured to include a wireless communication device 10 and a wireless communication device 20.
  • the wireless communication device 10 is, for example, a stick-on biosensor that is attached to a living body to measure biological information of the living body and transmit the measurement data wirelessly (hereinafter, the wireless communication device 10 is a stick-on type). It may also be called a biological sensor 10).
  • the wireless communication device 20 is a wireless communication device that establishes a connection (connection state) with a specific wireless communication device 10 and performs wireless communication.
  • the wireless communication device 20 is, for example, a conversion adapter that converts measurement data (digital data) received wirelessly from a wireless communication device (paste-type biological sensor) 10 into analog data and outputs the data by wire (hereinafter, wireless communication).
  • the device 20 may be referred to as a conversion adapter 20).
  • the wireless communication device (paste-type biosensor) 10 is attached to a measurement target (for example, an inpatient or an animal such as a dog or a cat) and detects biometric information from the measurement target.
  • a measurement target for example, an inpatient or an animal such as a dog or a cat
  • biometric information include body temperature, core body temperature, blood pressure, blood glucose level, oxygen saturation, heart rate, pulse rate, ECG, PPG, acceleration, angular velocity, and the like.
  • the wireless communication device (attached biosensor) 10 includes various biosensors (for example, body temperature sensor, photoelectric pulse wave sensor, pressure sensor, blood glucose level sensor, oxygen saturation sensor) that detect (acquire) these biometric information.
  • Pulse wave sensor, electrocardiographic electrode, acceleration sensor, angular velocity sensor, etc. are used.
  • the wireless communication device (paste type biosensor) 10 includes an AD converter that converts an analog signal (biological signal) into digital data, and converts the detected biomedical signal into digital data (biological information). Further, the wireless communication device (paste type biosensor) 10 includes a wireless communication module and wirelessly transmits AD-converted digital data (biological information).
  • the digital data (biological information) may be physical quantities such as temperature and pressure, or waveform data such as electrocardiography.
  • a wireless communication method such as BLE (Bluetooth (registered trademark) Low Energy), WiFi, LTE (Long Term Evolution), subgiga (900 MHz band) is used.
  • a wireless communication method such as NFC (Near Field Communication) (ISO / IEC 18092) or MIFARE (registered trademark) (ISO / IEC 14443) may be used.
  • the wireless communication device 10 also wirelessly transmits information (identification information) such as a device address (in the case of BLE) and a Mac address (in the case of WiFi).
  • the wireless communication device (conversion adapter) 20 is a conversion used to connect the wireless communication device (wireless stick-on biosensor) 10 to the wired biometric information monitor (bedside monitor) 100. It is a device.
  • the wireless communication device (conversion adapter) 20 enables connection between the wireless communication device (attached biosensor) 10 and the wired biometric information monitor 100 by absorbing differences in specifications and voltages. do.
  • the biological information monitor 100 a known wired / analog input type biological information monitor can be used.
  • the biological information monitor 100 is provided with a display screen, and is detected, converted, and transmitted by a wireless communication device (paste-type biological sensor) 10, and received, converted, and relayed via a wireless communication device (conversion adapter) 20. Enter and display information.
  • a wireless communication device praste-type biological sensor
  • conversion adapter wireless communication device
  • the wireless communication device 20 has a function of preventing unintended connection with the wireless communication device 10 without adding new dedicated parts such as a display and a selection switch (that is, without cost increase). have. Therefore, the wireless communication device 20 has a wireless communication unit 21 that transmits and receives radio waves to and from the wireless communication device 10, and when radio waves from the plurality of wireless communication devices 10 are received (that is, a plurality of radio waves within the reach of the radio waves). (When the communication device 10 exists) is provided with a connection control unit 22 for selecting the wireless communication device 10 to be connected from the plurality of wireless communication devices 10.
  • the wireless communication unit 21 includes, for example, a communication module including a BLE chip and the like.
  • the wireless communication unit 21 receives biometric information of digital data transmitted by wireless communication from an external wireless communication device (paste type biosensor) 10.
  • the wireless communication unit 21 receives a plurality of temperature information, photoelectric pulse wave information, and the like as biological information.
  • BLE Bluetooth (registered trademark) Low Energy
  • WiFi Wireless Fidelity
  • LTE Long Term Evolution
  • subgiga A wireless communication method (wireless communication standard) such as 900 MHz band) is used.
  • a wireless communication method wireless communication standard
  • a wireless communication method such as NFC (Near Field Communication) (ISO / IEC 18092) or MIFARE (registered trademark) (ISO / IEC 14443) may be used.
  • the wireless communication unit 21 obtains the identification information of the wireless communication device 10 (for example, the device address (in the case of BLE) or the Mac address (in the case of WiFi)).
  • the radio wave strength of the wireless communication device 10 (received signal strength (Received Signal Strength Indicator: RSSI)) is associated with (related to) and output to the connection control unit 22.
  • the connection control unit 22 is configured to have an MCU (Micro Control Unit) or the like.
  • the connection control unit 22 receives radio waves from the wireless communication unit 21 when radio waves from the plurality of wireless communication devices 10 are received (that is, when a plurality of wireless communication devices 10 are within the reach of the radio waves).
  • the communication device 10 is selected as the wireless communication device 10 for establishing a connection.
  • the connection control unit 22 selects the wireless communication device 10B as the wireless communication device 10 for establishing the connection.
  • the connection control unit 22 further provides a wireless communication device 10 that satisfies the second condition that the radio wave strength (received signal strength) is equal to or higher than the second predetermined value (for example, ⁇ 90 dBm). It is preferable to select it as the wireless communication device 10 for establishing the connection. By doing so, only the nearby wireless communication device 10 can be connected. That is, it is possible to prevent the connection with an unintended wireless communication device 10 at a distance. More specifically, for example, if only the wireless communication device 20 is started first in this room while trying to connect at the same timing in the next room, the wireless communication device 10 in the next room It is possible to prevent problems such as receiving the radio waves of the above and accidentally connecting.
  • the second predetermined value for example, ⁇ 90 dBm
  • connection control unit 22 sets that the state satisfying the first condition and the second condition (or at least the first condition) is continued for a predetermined time (for example, 5 seconds) or more, and the first condition is the first condition.
  • a predetermined time for example, 5 seconds
  • the wireless communication device 10 that satisfies the third condition as the wireless communication device 10 for establishing the connection.
  • wireless communication devices 10A and 10B there are a plurality of (two in the example of FIG. 5) wireless communication devices 10A and 10B at equal distances from the wireless communication device 20, and the radio wave intensities are substantially the same. Therefore, if a person passes between one of the wireless communication devices 10A and the wireless communication device 20 while neither is connected, the radio waves are blocked and the radio waves of the one wireless communication device 10A are blocked. The strength drops for a moment. Therefore, the first condition may be satisfied and the wireless communication device 10B may be connected to the other wireless communication device 10B. In this case, by providing the third condition, it is possible to prevent the connection with such an unintended wireless communication device 10B.
  • connection control unit 22 has a fourth condition that the fluctuation rate or fluctuation range of the radio wave strength (received signal strength) is equal to or less than a predetermined threshold value (for example, 5% or 3 dBm), and the first condition and the second condition.
  • a predetermined threshold value for example, 5% or 3 dBm
  • FIG. 6 there are a plurality of (two in the example of FIG. 6) wireless communication devices 10A and 10B at equal distances from the wireless communication device 20, and the radio wave intensities are substantially the same. Therefore, if a patient wearing the wireless communication device 10C passes nearby while the wireless communication device 10C is not connected to any of them, the radio wave strength of the wireless communication device 10C becomes prominent and strong at the time of approaching, thereby erroneously increasing the radio wave communication device. There is a risk of being connected to 10C. For example, the radio field strength of the wireless communication device 10C attached to a walking patient changes from moment to moment as the patient moves, that is, the rate of change in radio field strength does not stay below a predetermined threshold value. By providing the above-mentioned fourth condition, it is possible to prevent the connection with such an unintended wireless communication device 10C.
  • connection control unit 22 repeatedly executes and selects whether or not the first condition, the second condition, the third condition, and the fourth condition (or at least the first condition) are satisfied. It is preferable to add the wireless communication device 10 that establishes the connection. By doing so, it is possible to connect to a plurality of wireless communication devices 10 while preventing an unintended connection to the wireless communication device 10.
  • connection control unit 22 selects (connects) any of the wireless communication devices 10 when the first condition, the second condition, the third condition, and the fourth condition (or at least the first condition) are not satisfied. do not do.
  • the connection control unit 22 does not select (connect) any of the wireless communication devices 10A, 10B, and 10C.
  • connection control unit 22 has only one wireless communication device 10 for which radio waves have been received, it is preferable that the wireless communication device 10 is selected as the wireless communication device 10 for establishing a connection.
  • the radio wave strength (received signal strength) of the received radio waves is the strongest, and the radio wave strength is next.
  • the wireless communication device 10 that satisfies the first condition of being stronger than the strong radio wave intensity by a predetermined value or more or a predetermined ratio or more is selected and connected as the wireless communication device 10 for establishing the connection.
  • the biometric information of the digital data transmitted wirelessly from the wireless communication device (attached biosensor) 10 is received, the received biometric information is processed into data, and an external biometric information monitor (bedside monitor) is used. It is converted into analog data conforming to 100 (conversion unit 23). Then, it is output by wire via the connection unit 24.
  • the other wireless communication device 10 when radio waves from a plurality of wireless communication devices 10 are received, the other wireless communication device 10 is selected from the plurality of wireless communication devices 10.
  • the wireless communication device 10 having a clearly strong radio wave strength (received signal strength) is selected and connected. Therefore, it is possible to prevent an unintended connection with the wireless communication device 10.
  • the user in order to establish a connection, the user simply brings the wireless communication device 10 in the vicinity of the wireless communication device 20 (closes the wireless communication device 10 and the wireless communication device 20), for example.
  • a dedicated component such as a display or a selection switch.
  • the present embodiment it is possible to prevent an unintended connection with the wireless communication device 10 without adding a new dedicated component or the like (that is, without increasing the cost).
  • the effect is exhibited in the conversion adapter 20 which does not have a display device or the like.
  • the wireless communication device 10 satisfying the second condition that the radio wave strength (received signal strength) is equal to or higher than the second predetermined value makes a connection. It is selected as the wireless communication device 10 to be established. Therefore, only the nearby wireless communication device 10 can be connected. That is, it is possible to prevent the device from being connected to an unintended wireless communication device 10 in a distant place.
  • the third condition is that the state of satisfying the first condition and the second condition (or at least the first condition) is continued for a predetermined time or more, and the first condition and the first condition are satisfied.
  • the wireless communication device 10 satisfying the third condition is further selected as the wireless communication device 10 for establishing the connection. Therefore, for example, it is possible to prevent the radio wave strength from fluctuating momentarily due to a short-time disturbance, satisfying the first condition and the like, and being connected to an unintended wireless communication device 10.
  • the fourth condition is that the fluctuation rate or fluctuation range of the radio wave strength (received signal strength) is equal to or less than a predetermined threshold value, and the first condition, the second condition, and the third condition are satisfied.
  • the wireless communication device 10 satisfying the fourth condition is further selected as the wireless communication device 10 for establishing the connection. Therefore, for example, when a person wearing the wireless communication device 10 passes near the wireless communication device 20, it is possible to prevent accidental connection.
  • the determination of whether or not the first condition, the second condition, the third condition, and the fourth condition (or at least the first condition) are satisfied is repeatedly executed and selected.
  • the wireless communication device 10 to be connected is added. Therefore, it is possible to connect to a plurality of wireless communication devices 10 while preventing an unintended connection to the wireless communication device 10.
  • the wireless communication device 20 may be, for example, a smartphone in which application software such as body temperature measurement is installed.
  • a smartphone is used as the wireless communication device 20, as shown in FIG. 7, for example, Bluetooth (registered trademark), BLE (Bluetooth (registered trademark) Low Energy), WiFi, infrared communication, NFC (Near Field Communication), etc. It communicates with the wireless communication device (paste type biosensor) 10 by wireless communication, acquires the measurement data, and displays it on the screen.
  • the wireless communication device 20 may be, for example, a node (repeater) or the like.
  • the wireless communication unit 21 may be configured to transmit information (for example, connection confirmation information with the wireless communication device 10) to the wireless communication device (attached biosensor) 10 by using wireless communication.
  • information for example, connection confirmation information with the wireless communication device 10.
  • the connection confirmation switch push switch
  • a connection confirmation command is transmitted, and the LED of the wirelessly connected (paired) wireless communication device 10 lights up or blinks. Instead of lighting or blinking the LED, it may vibrate or buzzer.
  • the connection target is confirmed by receiving the connection confirmation information and causing the wireless communication device 10 side to emit light or make a sound. Can be done.
  • the wireless communication unit 21 may be configured to support wireless communication of a plurality of different wireless communication methods. More specifically, for example, the configuration may include a plurality of wireless communication units (wireless communication drivers) 21.
  • the plurality of wireless communication units (wireless communication drivers) 21 may use wireless communication methods (wireless) such as BLE (Bluetooth (registered trademark) Low Energy), WiFi, LTE (Long Term Evolution), and subgiga (900 MHz band). Communication standard), and it is preferable to adopt a wireless communication method (wireless communication standard) such as NFC (Near Field Communication) (ISO / IEC 18092) or MIFARE (registered trademark) (ISO / IEC 14443).
  • one wireless communication device (conversion adapter) 20 can be connected to a wireless communication device 10 having various different communication drivers, so that various sensor information can be transmitted for general purposes. can.
  • Wireless communication system 10 10A, 10B, 10C Wireless communication device (paste type biosensor) 20 Wireless communication device (conversion adapter / smartphone / repeater) 21 Wireless communication unit 22 Connection control unit 100 Biometric information monitor

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Signal Processing (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
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Abstract

Dispositif de communication sans fil (20) comprenant : une unité de communication sans fil (21) qui transmet/reçoit des ondes radio vers/depuis un dispositif de communication sans fil (10) ; et une unité de commande de connexion (22) qui, lors de la réception d'ondes radio provenant d'une pluralité de dispositifs de communication sans fil (10), sélectionne parmi la pluralité de dispositifs de communication sans fil (10) un dispositif de communication sans fil (10) auquel se connecter. L'unité de commande de connexion (22) sélectionne, en tant que dispositif de communication sans fil (10) permettant d'établir une connexion, un dispositif de communication sans fil (10) qui satisfait à une première condition selon laquelle l'intensité d'onde radio d'une onde radio reçue (intensité de signal reçu) est la plus élevée et est supérieure à la seconde intensité d'onde radio la plus élevée par au moins une valeur prescrite ou au moins un pourcentage prescrit.
PCT/JP2021/044237 2020-12-22 2021-12-02 Dispositif et système de communication sans fil WO2022138042A1 (fr)

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JP2020212615 2020-12-22
JP2020-212615 2020-12-22

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012081271A (ja) * 2003-06-20 2012-04-26 Smiths Medical Pm Inc 酸素計測シミュレータ
WO2015194381A1 (fr) * 2014-06-18 2015-12-23 コニカミノルタ株式会社 Système de communication et dispositif de réception
JP2016539731A (ja) * 2013-12-12 2016-12-22 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 患者のデータ表示のサイズに対する自動的なリアルタイム変更
JP2018063480A (ja) * 2016-10-11 2018-04-19 株式会社リコー 情報処理装置、処理方法及びプログラム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012081271A (ja) * 2003-06-20 2012-04-26 Smiths Medical Pm Inc 酸素計測シミュレータ
JP2016539731A (ja) * 2013-12-12 2016-12-22 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 患者のデータ表示のサイズに対する自動的なリアルタイム変更
WO2015194381A1 (fr) * 2014-06-18 2015-12-23 コニカミノルタ株式会社 Système de communication et dispositif de réception
JP2018063480A (ja) * 2016-10-11 2018-04-19 株式会社リコー 情報処理装置、処理方法及びプログラム

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