JP5652992B2 - Biological information measuring device and method for controlling biological information measuring device - Google Patents

Description

  The present invention relates to measurement of biological information, and relates to a biological information measuring device that transmits biological information such as measured blood pressure to an external terminal such as a mobile phone or a PC, and a control method thereof.

  Biological information measured by a biological information measuring device such as a sphygmomanometer or a heart rate monitor is transmitted to a data collecting device provided separately from the biological information measuring device, and data processing such as data display, data analysis, and data storage is performed in the data collecting device. As a technique for performing this, a method of performing transmission from a biological information device to a data collection device by unidirectional communication using weak radio wave communication or infrared communication is common.

  FIG. 10 is a diagram illustrating a configuration example in which a measurement result is transmitted by one-way communication from a biological information measurement device to an external terminal.

  In the configuration example shown in FIG. 10, the biological information measuring apparatus 110A includes a measuring unit 115A, and transmits the biological information measured by the measuring unit 115A from the transmission circuit 111A to the external terminal 120A under the control of the calculation / control unit 112A. Is done.

  In this configuration, in order to form unidirectional communication between the biological information measuring apparatus 110A and the external terminal 120A, a receiving circuit 130A for dedicated radio is added as an external unit on the external terminal 120A side. The external terminal 120A is a data collection device that collects measurement data transmitted from the biological information measurement device 110A, and includes a control / analysis / storage unit 122A, a display / notification unit 123A, and the like, for example, a PC or a mobile phone It is a form.

  FIG. 11 is a state diagram for explaining a transmission state in which measurement data is transmitted from the biological information measurement device to an external terminal by unidirectional communication.

  In the case where transmission is performed from the biological information measuring device to the external terminal by unidirectional communication, first, setup is performed in order to establish communication between the biological information measuring device and the external terminal in the initial introduction state.

  After establishing communication by setup, in the normal measurement operation, device information and personal information are transmitted from the biological information measuring device to the external terminal and displayed on the external terminal, and then measurement is performed. While the biological information measuring device is measuring, the external terminal is waiting for measurement data.

  The biological information measuring device transmits the measurement result to the external terminal after the measurement is completed, and the external terminal displays the received measurement result.

  In this one-way communication, the transmission operation is stopped when the biological information measuring device is measuring.

  Bidirectional communication is known for the above-described unidirectional communication. Bluetooth (registered trademark) wireless communication is known as a technique for performing near field communication by bidirectional communication. Bluetooth (registered trademark) wireless communication is a 2.4 GHz band two-way wireless communication that can establish a communication link between devices such as mobile phones that comply with the Bluetooth (registered trademark) wireless standard. Have. In order to ensure security, pairing authentication is required to exchange an authentication code called PIN code at the time of connection, and in order to prevent interference and eavesdropping, communication is performed while constantly changing the frequency by a method called frequency hopping. Is going.

A number of two-way communications using Bluetooth (registered trademark) are known, for example, Patent Document 1. Also, in intermittent two-way communication, it is known to maintain wireless communication quality by prohibiting driving of a predetermined load unit other than the wireless communication function when the battery state detects a predetermined state. (Patent Document 2).
JP-A-2004-329300 (paragraphs 0005, 0033, 0034, etc.) International Publication Number WO 02 / 073770A1 (column 4, line 8-line 17)

  In the biological information measuring apparatus, when the measurement result is simply transmitted to the external terminal, the conventionally used unidirectional communication is sufficient. However, the use of biological information measuring devices has become more complicated with higher functionality and higher accuracy, and the user can measure biological information while exercising or moving while carrying the measurement results on the body. Due to changes in usage patterns such as confirmation by a free external terminal, bidirectional communication that enables communication from the external terminal to the biological information measuring device is required instead of unidirectional communication from the biological information measuring device to the external terminal. ing. According to this two-way communication, it is possible to transmit physical information such as age, height, weight, etc. related to the user from the external terminal to the biological information measuring device, and to make the measurement of biological information multifunctional. In addition, it becomes easy to manage user measurement data.

  When such bi-directional communication is applied to the biological information measuring apparatus, two link methods are conceivable for establishing a communication link. One is a link method for establishing a wireless communication link for bidirectional communication after measuring biological information, and the other is a method for establishing a wireless communication link for bidirectional communication before measuring biological information. is there.

  In biometric information measurement, it is necessary to guide the user about the measurement method and the method of using the measurement information measuring device before measurement. Therefore, two-way communication can be performed before measuring biometric information. A method of establishing a wireless communication link is preferred.

  FIG. 12 shows a configuration example in the case where communication with an external terminal is performed by bidirectional communication in the biological information measuring apparatus.

  In the configuration example shown in FIG. 12, the biological information measuring apparatus 110B includes a measuring unit 115B, and transmits the biological information measured by the measuring unit 115B from the communication unit 111B to the external terminal 120B under the control of the calculation / control unit 112B. Is done.

  In this configuration, the external terminal 120B includes a communication unit 121B having a bidirectional communication function in order to form bidirectional communication between the biological information measuring device 110B and the external terminal 120B. The external terminal 120B is a data collection device that collects measurement data transmitted from the biological information measurement device 110A, and includes a control / analysis / storage unit 122B, a display / notification unit 123B, and the like in addition to the communication unit 121B. For example, it can be configured in the form of a PC or a mobile phone by incorporating a bidirectional communication function.

  FIG. 13 is a state diagram for explaining a state of transmitting and receiving between the biological information measuring device and the external terminal by bidirectional communication.

  In two-way communication using Bluetooth (registered trademark), a pairing authentication operation is first performed using an authentication code to establish a communication link, and then device information and personal information are sent from the biological information measuring device to the external terminal. After transmission and display on the external terminal, measurement is started based on a measurement start instruction from the external terminal. While the biological information measuring device is measuring, the external terminal is waiting for measurement data.

  The biological information measuring device transmits the measurement result to the external terminal after the measurement is completed, and the external terminal displays the received measurement result. After displaying the measurement result, the pairing is canceled and the two-way communication is terminated.

  In this bidirectional communication, even when the biological information measuring device is measuring, as described above, communication is performed while changing the frequency constantly by frequency hopping in order to prevent interference and wiretapping. In this frequency hopping, radio waves are transmitted and received at a cycle of 1600 times / second, for example.

  In the configuration in which the above-described biological information measuring device and the external terminal are bidirectionally communicated, the biological information measuring device simultaneously performs both the measurement and the communication, so that noise generated by communication during measurement is measured by the measuring unit. There is a problem in that the power consumption is large and a large amount of power is required to perform both the measurement operation and the communication operation.

  In bidirectional communication using Bluetooth (registered trademark), communication in a high frequency band of 2.4 GHz is performed by hopping even during measurement. Therefore, this high frequency band becomes a cause of noise for the sensor unit of the measurement unit. In general, it is known to cover with an electromagnetic field shield as a method of reducing the influence of noise, but the sensor unit included in the measurement unit of the biological information measuring device is unavoidable to contact with the living body. It is difficult to completely cover the sensor part, and it is difficult to avoid noise entering from the gap. For example, when measuring blood pressure as biometric information, it is necessary to provide an air path for supplying air to the cuff because it is necessary to press the body such as the arm with the cuff, and it is difficult to completely cover the sensor part with the electromagnetic field shield It is.

  Further, in bidirectional communication using Bluetooth (registered trademark), for example, current consumption of 40 to 100 mA is required for communication. In the biological information measuring device, in addition to the current consumption required for the communication, a driving current for driving the measuring unit is required to measure the biological information. For example, when measuring blood pressure, it is necessary to drive a pump to supply air to the cuff. Therefore, a biological information measuring device that performs two-way communication requires a large amount of power to perform both the measurement operation and the communication operation.

  In Patent Document 1, in order to suppress power consumption, the communication cycle is shortened when real-time property is required, and the communication cycle is increased when real-time property is not required. The point which sets a communication period is indicated.

  Therefore, the present invention solves the conventional problems and solves the problems of generation of noise and increase in power consumption caused by performing both the measurement operation and the communication operation in the biological information measurement device that performs two-way communication. Objective.

  In order to solve the above-described problems, the present invention is configured such that in bidirectional communication, when a biological information measurement device performs measurement, communication is stopped and only measurement is performed. As a result, generation of noise during measurement can be prevented, and power required for communication can be made unnecessary.

  When this configuration of the present invention is applied to bidirectional communication, problems associated with bidirectional communication occur. In two-way communication, first, security is ensured using an authentication code, and then a common key is formed to form a communication link.

  In two-way communication, normally, after the communication link is formed, it is maintained without releasing the formed communication link even in a standby state in which data transmission / reception is not performed. It has been released. After releasing the communication link, bidirectional communication is performed by forming the communication link again. In this way, bidirectional communication always maintains a communication link.

  Since such bidirectional communication has a characteristic of always maintaining the communication state, it is incompatible with the configuration in which communication is stopped during the measurement of the present invention. In the biological information measuring device, in order to stop the communication during the measurement, it is necessary to once cancel the communication link before the measurement in the bidirectional communication and restart the communication link after the measurement. Normally, after the communication link is formed, the authentication code is erased and the communication link is maintained using the common key. In bidirectional communication using Bluetooth (registered trademark), a link key is used as the common code.

  Therefore, to cancel the communication link before measurement in bi-directional communication and restart the communication link after measurement, store this common code and communicate again by reading the common code when restarting the communication link. It is conceivable to form a link.

  However, restarting a communication link using this common code has the following problems. FIG. 14 is a diagram for explaining a configuration for performing bidirectional communication between the biological information measuring device and the external terminal. Temporarily storing and restarting the communication link by temporarily storing a common key (here, a link key) It shows the case of doing.

  FIG. 14A shows a state in which a communication link is established. In this state, the biological information measuring device A and the external terminal a form a communication link with a common link key, and temporarily store the link key.

  FIG. 14B shows a state during measurement. While the measurement is performed in the biological information measuring apparatus A, the influence of noise is avoided by stopping the communication link.

  FIG. 14C shows each state when the communication link is resumed.

  FIG. 14 (c1) shows a case where the external terminal a has a function of temporarily storing a link key. In this case, the communication link can be resumed by using the link key stored in the external terminal a.

  However, on the external terminal a side, while the biological information measuring apparatus A is performing measurement, the measurement and operation are separated from each other. Therefore, the power is turned off by the user operation or the function of the external terminal a. (FIG. 14 (c2)). Thus, when the power of the external terminal a is turned off during measurement, the link key is deleted even if the external terminal a has a function of temporarily storing the link key. In this case, since there is no common link key between the biological information measuring device A and the external terminal a, the communication link is not established.

  Further, an external terminal such as a PC or a mobile phone does not necessarily have a function of temporarily storing a link key (FIG. 14 (c3)). Thus, when the external terminal a does not have a function for temporarily storing the link key, the link key cannot be temporarily stored. In this case, since there is no common link key between the biological information measuring device A and the external terminal a, the communication link is not established.

  Even if the external terminal a has a function of temporarily storing the link key, when the communication link is resumed, another external terminal b communicates first before the external terminal a resumes. A link may be formed. This is because the biological information measuring apparatus A cannot distinguish between the external terminal a and the external terminal b and cannot restrict the communication of the external terminal b, so that the external terminal b comes before the external terminal a. When the formation of the communication link is requested, the communication link is formed first with the external terminal b (FIG. 14 (c4)).

  Thus, when a communication link is formed first with the external terminal b, there is a situation in which measurement data to be sent to the external terminal a measured by the biological information measuring device A is transmitted to the external terminal b. As a result, there arises a problem that the measurement data is transmitted to an external terminal not targeted.

  As shown in FIGS. 14 (C2) to (C4), in the configuration in which the communication link is temporarily released and resumed using the common code (link key) used in the communication link, formation of the communication link is not established. There is a problem that there are cases.

  Therefore, in a biological information measurement device that performs two-way communication, when the biological information measurement device performs measurement in order to solve the problems of noise generation and power consumption increase due to both measurement operation and communication operation. An object of the present invention is to provide a configuration in which the communication link is temporarily released and resumed without causing the formation of the communication link in the configuration in which the communication is stopped and only the measurement is performed.

  The present invention relates to a biological information measuring device that performs mutual authentication with an external terminal to form a communication link for bidirectional communication, and transmits and receives data via the communication link. After the communication link is formed, the communication link is temporarily released during the measurement operation, the communication link temporarily released after the measurement operation is completed, and when the biological information measuring device performs measurement, the communication is stopped and only the measurement is performed. The configuration is to be performed.

  This prevents the generation of noise during measurement and eliminates the power required for communication.

  Further, the present invention can be configured in a more detailed configuration as an aspect of a biological information measuring device and an aspect of a control method of the biological information measuring apparatus.

  The biological information measuring apparatus of the present invention is a biological information measuring apparatus that performs mutual authentication with an external terminal to form a communication link for bidirectional communication, and transmits and receives data via the communication link. A measurement unit that measures data, a communication unit that transmits and receives data to and from an external terminal, and a control unit that controls the measurement operation of the measurement unit and the communication operation of the communication unit.

  The control unit performs the following operation control in order after performing the communication link formation control of the bidirectional communication by the mutual authentication by the communication unit. A communication link for bidirectional communication by mutual authentication is performed again to re-form the communication link.

  Each operation control performed in order after the communication link formation control is performed is an operation control for starting measurement of the measurement unit, an operation for temporarily canceling the communication link by stopping communication of the communication unit performed before the start of the measurement operation. It is operation control for resuming communication of the communication unit performed after the control and measurement operation.

  Mutual authentication using an authentication code does not require storage of the authentication code in the storage means. For this reason, the communication link for bidirectional communication is formed by performing mutual authentication with the external terminal using an authentication code, thereby providing communication without providing a function for temporarily storing a common key (link key) on the external terminal side. Link re-formation can be performed. In addition, mutual authentication with an external terminal using an authentication code can be performed regardless of whether the power of the external terminal is ON or OFF during measurement.

  In addition, the biological information measuring device includes an authentication code temporary storage unit that temporarily stores an authentication code for identifying an individual.

  In the communication link formation control, the control unit stores the authentication code in the authentication code temporary storage unit, reads the authentication code from the authentication code temporary storage unit after the completion of the measurement operation, and uses the read authentication code to Mutual authentication between the two.

  After the predetermined transmission / reception operation by the resumed communication link is completed, the control unit terminates the communication operation of the communication unit, and erases the authentication code stored in the authentication code temporary storage unit.

  After the communication link is formed, the control unit controls the communication unit to transmit guidance information to the external terminal. As guidance information, it can be set as the operation content which a user performs, for example when measuring by biometric information measurement.

  The control unit controls the communication unit with a command to start measurement by the measurement unit as a trigger, and stops communication of the communication unit.

  The biological information can be a blood pressure value, and the measurement unit can be a sphygmomanometer that measures the blood pressure value.

  Further, the communication link can be a communication by Bluetooth (registered trademark), and the authentication code can be a PIN code in Bluetooth (registered trademark).

  According to the biological information measuring apparatus of the present invention, it is possible to avoid the influence of noise caused by communication during measurement of biological information.

  In addition, according to the biological information measuring device, since the measurement operation and the communication operation can be performed independently, an increase in power consumption due to simultaneous operation can be suppressed, and the power source used for the biological information measuring device The capacity of the battery can be reduced, and a miniaturized power source can be obtained.

  In addition, according to the biological information measuring apparatus, in the reconfiguration of the communication link, instead of storing the common code used for the communication link, the authentication code for identifying the user is used to provide the external terminal with a special function. In addition, a communication link can be formed with a highly general external terminal.

  According to the biological information measuring apparatus and the biological information measuring apparatus control method of the present invention, it is possible to eliminate the generation of noise and the increase in power consumption caused by performing both the measurement operation and the communication operation.

  Further, according to the biological information measuring device and the biological information measuring device control method of the present invention, the formation of the communication link is not established in the configuration in which communication is stopped and only measurement is performed when the biological information measuring device performs measurement. It is possible to provide a configuration for temporarily releasing and resuming the communication link without any problem.

  Hereinafter, the biological information measuring apparatus of the present invention will be described in detail with reference to the drawings.

  Hereinafter, an exemplary embodiment using the biological information measuring device of the present invention will be described with reference to FIG. 1, and a schematic configuration of the exemplary configuration of the biological information measuring device of the present invention will be described with reference to FIG. 3 will be described with reference to FIG. 3, and an operation example of the biological information measuring apparatus of the present invention will be described with reference to the flowcharts of FIGS. 4 and 5 and the state diagrams of FIGS. A communication link in the case of performing bidirectional communication between the apparatus and the external terminal will be described with reference to FIG.

[Example of state in which biological information measuring device is used: Fig. 1]
FIG. 1 shows an example of using the biological information measuring apparatus of the present invention.

  As a form of use of measuring devices that measure various biological information related to living bodies, such as blood pressure monitors, heart rate monitors, body fat percentage meters, and bone densitometers, these measuring devices can be used in public places, homes, offices, etc. There is a usage form in which biometric information is arranged and measured at various places, and the measurement data is collected in an external terminal such as a mobile phone carried by each person. According to this mode of use, biological information can be collected at various locations, so that it is possible to finely manage one's own health.

  In such a usage pattern, when viewed from the biological information measuring devices A to M, the connection with the external terminals a to n is not a one-to-one connection but an unspecified number of connections. In addition, even when viewed from the external terminals a to n, the connection to the biological information measuring devices A to M is in a fixed connection relationship although the biological information measuring device to be connected is selected from the biological information measuring devices A to M. Absent.

  Therefore, since the connection relationship between the biological information measuring devices A to M and the external terminals a to n is not a one-to-one fixed relationship, it is necessary to authenticate each time the connection is made. This mutual authentication can be set by setting an authentication code for the external terminal or user and inputting the same authentication code to the biometric information measuring apparatus and the external terminal that are to form a communication link.

[Outline of the device: Fig. 2]
FIG. 2 is a diagram for explaining a schematic configuration of the biological information measuring apparatus of the present invention.

  In the configuration example shown in FIG. 2, the biological information measuring apparatus 1 includes a measuring unit 15, and transmits biological information measured by the measuring unit 15 from the communication unit 11 to the external terminal 2 under the control of the calculation / control unit 12. Is done.

  In this configuration, in order to form bidirectional communication between the biological information measuring device 1 and the external terminal 2, the external terminal 2 includes a communication unit 21 having a bidirectional communication function, and the communication of the biological information measuring device 1 is performed. Bidirectional communication is performed with the unit 11.

  The measurement unit 15 performs various signal processing such as signal amplification and noise removal on the detection signal detected by the detection unit 15b including the sensor for measuring biological information, the drive unit 15a that drives the detection unit 15b, and the detection unit 15b. A signal processing unit 15c is provided.

  The calculation / control unit 12 outputs a drive signal to the drive unit 15a of the measurement unit 15 to perform drive control, and calculates biological information by calculating the detection signal obtained from the signal processing unit 15c. For example, a blood pressure value is calculated in the case of a sphygmomanometer, and a heart rate is calculated in the case of a heart rate monitor. The calculated biological information is transmitted from the communication unit 11 toward the external terminal 2.

  In addition to the communication unit 11 and the measurement unit 15, a display / notification unit 13 and an operation / input unit 14 are connected to the calculation / control unit 12. The display / notification unit 13 displays various types of information in addition to displaying the biological information calculated by the calculation / control unit 12, and performs notification as necessary. The display content can be any content other than, for example, an operation content for instructing an operation performed by the user to measure the biological information, a health state related to the biological information, and the like. The notification content includes, for example, an instruction to stop measurement. The contents displayed or notified on the display / notification unit 13 may be displayed on the display / notification unit 23 included in the external terminal 2.

  The communication unit 11 of the present invention includes a pairing control unit 16 for forming a communication link with the external terminal 2 in bidirectional communication, and a restart of the communication link when the communication link is temporarily stopped. An authentication code temporary storage unit 17 that temporarily stores the authentication code is provided.

  Further, the communication unit 11 and the measurement unit 15 are driven and controlled in cooperation by the calculation / control unit 12, and the communication link of the communication unit 11 is temporarily released during measurement by the measurement unit 15, and the frequency signal of the communication link is 15 to avoid noise. Moreover, after the measurement of the measurement part 15 is complete | finished, the communication link of the communication part 11 is restarted, and measurement data are transmitted to the external terminal 2 via a communication link.

  The calculation / control unit 12 performs control to synchronize the start operation of the measurement unit 15 and the stop operation of the communication unit 11, and performs control to synchronize the stop operation of the measurement unit 15 and the restart operation of the communication unit 11. Control for synchronizing the start operation of the measurement unit 15 and the stop operation of the communication unit 11 can be performed by starting the stop operation of the communication unit 11 using a command to start measurement of the measurement unit as a trigger. Control for synchronizing the stopping operation of the measuring unit 15 and the resuming operation of the communication unit 11 is performed by starting the resuming operation of the communication unit 11 triggered by the acquisition of a signal or detection signal for which measurement by the measuring unit is completed. Can do.

  The pairing control unit 16 performs pairing authentication between the biological information measuring device 1 and the external terminal 2 using the authentication code, and then forms a common code (for example, a link key) to form a communication link. In communication by Bluetooth (registered trademark), after performing pairing authentication using an authentication code, a link key and the like are formed through generation of an initial key, but detailed description thereof is omitted here. The configuration of the authentication code temporary storage unit 17 is not a configuration provided with a communication function based on normal Bluetooth (registered trademark), but a characteristic configuration inherently provided in the present invention.

  The communication unit 11 and the communication unit 21 can use a Bluetooth (registered trademark) module incorporating a Bluetooth (registered trademark) function when performing bidirectional communication using Bluetooth (registered trademark).

  The external terminal 2 is a data collection device that collects measurement data transmitted from the biological information measurement device 1, and includes a control / analysis / storage unit 22, a display / notification unit 23, and the like in addition to the communication unit 21. For example, it can be configured in the form of a PC or a mobile phone by incorporating a bidirectional communication function.

  The control / analysis / storing unit 22 analyzes the signal received by the communication unit 21 to display the biological information on the display / notification unit 23, and can also hold the biological information. The stored biological information can be output from an output port (not shown). According to this holding unit, biological information obtained by measurement can be output to a PC or the like, and data management can be performed on the PC side.

  The authentication code can be input from the operation / input unit 14 in the biological information measuring apparatus 1, and in addition to being input from the input unit (not shown) in the external terminal 2, a storage means (see FIG. (Not shown) may be stored.

[Overview of blood pressure monitor: Fig. 3]
The configuration shown in FIG. 3 shows a configuration example when the biological information measuring device of the present invention is applied to a sphygmomanometer.

  The configuration example of the sphygmomanometer 1m shown in FIG. 3 is different in that the configuration of the measurement unit 15 in the configuration example shown in FIG. 2 is the blood pressure measurement unit 15m, and the other configurations can be the same. In FIG. 3, only the blood pressure measurement unit 15 m that performs blood pressure measurement will be described, and description of other components will be omitted. 3 that are the same as those shown in FIG. 12 are denoted by the same reference numerals and “m” is added.

  The blood pressure measurement unit 15m included in the sphygmomanometer 1m includes a pressure sensor 15mb for measuring blood pressure, a drive unit 15ma for performing blood pressure measurement using the pressure sensor 15mb, and signal amplification and noise removal for detection signals detected by the pressure sensor 15mb. A signal processing unit 15mc that performs various signal processing is provided, and the driving unit 15ma includes a cuff 15ma-2 that pressurizes the body, and a pressurizing pump 15ma-1 that supplies air to the cuff 15ma-2.

  The pressurizing pump 15ma-1 is driven and controlled by a control signal from the arithmetic / control unit 12m. The control signal of the arithmetic / control unit 12m is formed according to an operation start command from the operation / input unit 14m or a measurement program started by the operation start command.

  The communication unit 11m and the blood pressure measurement unit 15m are driven and controlled in cooperation by the calculation / control unit 12m. When the blood pressure measurement is performed by the blood pressure measurement unit 15m, the communication link of the communication unit 11m is temporarily released, and the frequency signal of the communication link is the pressure. Avoid noise for sensor 15mb. Moreover, after the measurement of the blood pressure measurement unit 15m is completed, the communication link of the communication unit 11m is resumed, and the measurement data is transmitted to the external terminal 2 via the communication link.

  The calculation / control unit 12m performs control to synchronize the start operation of the blood pressure measurement unit 15m and the stop operation of the communication unit 11, and performs control to synchronize the stop operation of the blood pressure measurement unit 15m and the restart operation of the communication unit 11m. Control for synchronizing the start operation of the blood pressure measurement unit 15m and the stop operation of the communication unit 11m is a command for starting the measurement of the blood pressure measurement unit, for example, the stop of the communication unit 11m as a drive signal and a trigger for driving the pressurization pump 15ma-1. This can be done by starting the operation. Control for synchronizing the stopping operation of the blood pressure measurement unit 15m and the resuming operation of the communication unit 11m can be performed by starting the resuming operation of the communication unit 11m with the acquisition of the detection signal from the signal processing unit 15mc as a trigger. .

  Hereinafter, in the biological information measuring apparatus of the present invention, the communication is canceled during the measurement operation, and the operation for resuming the communication that has been released after the measurement is completed is illustrated in FIG. , 5, and the state diagrams of FIGS. 6, 7, and 8. 6 and 7 are state diagrams for explaining the state of transmitting and receiving between the biological information measuring device and the external terminal by bidirectional communication, and FIG. 7 shows a more detailed state. FIG. 8 shows the phase states of the communication phase, the synchronization establishment phase, and the standby phase.

  When performing two-way communication, it is necessary to form a communication link between the biological information measuring device and the external terminal. After inquiring and calling to form a communication link, both the biological information measuring device and the external terminal input a common authentication code (PIN code). This authentication code is a code specific to the user or the external terminal to be used, and is input to both the biological information measuring device and the external terminal when measuring the biological information by the biological information measuring device. Confirm authentication. On the external terminal side, in addition to inputting the authentication code every time it is used, it can be stored in advance in the storage means provided in the external terminal (S1).

  The biological information measuring apparatus performs an authentication process for pairing authentication using the input authentication code (S2). This authentication process can be performed, for example, by generating a key code such as an initial key using an authentication code and a random number in both devices and collating these key codes. After the authentication process, a common code (for example, a link key) used for the communication link is generated (S3), and the communication link is established (S4).

  Since authentication processing, generation of a common code, and establishment of a communication link are known in two-way communication using Bluetooth (registered trademark), detailed description thereof is omitted here.

  The biological information measuring device does not normally delete and store the authentication code (PIN code) in the process of generating the communication link. In the present invention, this authentication code (PIN code) is stored in the authentication code temporary storage unit and used when the communication link is resumed (S5).

  After the communication link is formed, various information such as device information, personal information, and guidance is transmitted from the biological information measuring device to the external terminal. The device information is information related to the biological information measuring device, and can be, for example, the content of biological information to be measured. The personal information can be, for example, a measurement record of the user's past biological information, and can be transmitted by reading the information recorded in the biological information measuring device. The guidance can be an operation procedure for guiding an operation when the user measures biological information using the biological information measuring device. The data to be transmitted can be audio data or image data.

  The external terminal displays information received from the biological information measuring device. By displaying the guidance as an image or sound, the user's procedure for measuring biological information is guided (S6).

  The user starts the measurement by operating the biological information measuring device according to the displayed guidance. The start command for starting the measurement may be transmitted directly from the external terminal to the biological information measuring device, or the biological information measuring device may be directly operated.

  When detecting the measurement start command (S7), the biological information measuring device temporarily stops pairing with the external terminal and releases the communication link (S8). In releasing the communication link, for example, the transmission is stopped by turning off the power of the communication unit, and generation of a frequency signal that causes noise is stopped (S9).

  As a result, a wave stop state is established between the biological information measuring device and the external terminal. In FIGS. 6 and 7, an arrow between the biological information measuring device and the external terminal indicates a transmission / reception state performed between the two, and in two-way communication using Bluetooth (registered trademark), a frequency is set within a predetermined frequency range by frequency hopping. Transmission and reception are performed while changing to prevent crosstalk and eavesdropping.

  The biological information measuring device starts measurement (S10). Since transmission / reception is not performed between the biological information measurement device and the external terminal during the wave stop, it is possible to prevent a frequency signal generated by transmission / reception from entering the measurement unit and becoming noise.

  When the measurement is finished (S11), the biological information measuring device acquires the measurement result and displays it on the display means (S12). While the wave is stopped, the external terminal may be in a state of waiting for measurement data waiting to receive measurement data, and the power of the external terminal may be stopped.

  The biological information measuring device turns on the power of the communication unit after the measurement is completed (S13). The authentication code (PIN code) stored in the authentication code temporary storage unit is read (S14), pairing authentication is performed (S15), a common code is generated (S16), and a communication link is established (S17). .

  After the communication link is resumed, the biological information measuring device transmits the measurement result to the external terminal (S18). The external terminal displays the received measurement result on the display unit. In addition to the measurement result, the display unit can display analysis contents obtained by analyzing the measurement result and various guidance.

  The biological information measuring apparatus stops the communication link (S19), completely cancels the pairing (S20), deletes the authentication code (PIN code) stored in the authentication code temporary storage unit (S21), The apparatus is turned off and the process ends (S22).

  In the state diagram of FIG. 8, in the communication connection phase, the present invention stores an authentication code that is normally discarded in the first pairing authentication, and uses the authentication code stored in the reconnection after the interruption. A communication link is generated.

  FIG. 9 is a diagram for explaining a configuration for performing bidirectional communication between the biological information measuring apparatus and the external terminal, and temporarily canceling and resuming the communication link by temporarily storing an authentication code (PIN code). Shows the case.

  FIG. 9A shows a state where a communication link is established. In this state, the biological information measuring apparatus A and the external terminal a form a communication link with a common link key, and temporarily store an authentication code (PIN code) used for pairing authentication when creating the link key.

  FIG. 9B shows a state during measurement. While the measurement is performed in the biological information measuring apparatus A, the influence of noise is avoided by stopping the communication link.

  FIG. 9C shows each state when the communication link is resumed.

  In FIG. 9 (c1), an authentication code (PIN code) is temporarily stored in the biological information measuring apparatus A, and the communication link is resumed by using this authentication code.

  When the external terminal b other than the external terminal a tries to generate a communication link with the biological information measuring device A when the communication link is resumed, an authentication code (PIN code) stored in the biological information measuring device A And the authentication code (PIN code) input to the external terminal b do not match, so the communication link is not established (FIG. 9 (c2)).

  Further, even when a communication link is formed through normal pairing authentication between the biological information measuring device and the external terminal b, an authentication code (PIN code) stored in the biological information measuring device is used. By collating with the external terminal b, it is confirmed that it is not the external terminal a, so that it is possible to prevent the measurement data to be transmitted to the external terminal a from being erroneously transmitted to the external terminal b.

  In the above description, an example of bidirectional communication using Bluetooth (registered trademark) is shown as bidirectional communication, but the present invention is not limited to this communication method.

  The biological information measuring device of the present invention can be applied to a body function measuring device using a pulse wave in addition to being applied to a heart rate monitor and a blood pressure monitor.

  Moreover, the biological information measuring device of the present invention is not limited to biological information and can be applied to arbitrary measurements.

It is a figure which shows the example of a form which uses the biological information measuring device of this invention. It is a figure for demonstrating schematic structure of the biometric information measuring apparatus of this invention. It is a figure which shows the structural example at the time of applying the biological information measuring device of this invention to a blood pressure meter. It is a flowchart for demonstrating operation | movement of the biometric information measuring apparatus of this invention. It is a flowchart for demonstrating operation | movement of the biometric information measuring apparatus of this invention. It is a state diagram for demonstrating the state transmitted / received by the bidirectional | two-way communication between the biological information measuring device of this invention, and an external terminal. It is a state diagram for demonstrating the state transmitted / received by the bidirectional | two-way communication between the biological information measuring device of this invention, and an external terminal. It is a figure which shows each phase state of the communication phase of the biological information measuring device of this invention, a synchronization establishment phase, and a standby phase. It is a figure for demonstrating the structure which performs between the biological information measuring device of this invention, and an external terminal by bidirectional | two-way communication. It is a figure which shows the structural example which transmits a measurement result by unidirectional communication from a biometric information measuring device toward an external terminal. It is a state diagram for demonstrating the transmission state which transmits measurement data by a one-way communication from a biometric information measuring apparatus to an external terminal. It is a figure which shows the structural example in the case of performing communication between external terminals in a biological information measuring device by bidirectional | two-way communication. It is a state diagram for demonstrating the state which transmits / receives between a biological information measuring device and an external terminal by bidirectional | two-way communication. It is a figure for demonstrating the structure which performs bi-directional communication between a biological information measuring device and an external terminal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Biological information measuring device 1m Blood pressure monitor 2 External terminal 11 Communication part 11m Communication part 12 Control part 12m Control part 13 Notification part 14 Input part 14m Input part 15ma-2 Cuff 15ma-1 Pressurization pump 15 Measurement part 15ma Drive part 15mb Pressure Sensor 15mc Signal processing unit 15a Drive unit 15b Detection unit 15c Signal processing unit 15m Blood pressure measurement unit 16 Pairing control unit 17 Authentication code temporary storage unit 21 Communication unit 22 Control / analysis / storage unit 23 Display / notification unit 110A Biological information measurement device 110B biological information measuring device 111A transmission circuit 111B communication unit 112A control unit 112B control unit 115A measurement unit 115B measurement unit 120A external terminal 120B external terminal 121B communication unit 122A control / analysis / storage unit 122B control / analysis / storage unit 123A display / notification 123B Display / notification unit 130A Receiving Circuit A Biological Information Measuring Device AM Biometric Information Measuring Device an External Terminal b External Terminal

Claims (3)

A biological information measurement device that performs mutual authentication with an external terminal to form a communication link for bidirectional communication, and transmits and receives data via the communication link,
A measuring unit that measures biological information; a communication unit that transmits and receives data to and from an external terminal; a control unit that controls the measurement operation of the measuring unit and the communication operation of the communication unit; An authentication code primary storage unit that temporarily stores an authentication code for specifying a plurality,
The controller is
In the formation control of the communication link, the authentication code is temporarily stored in the authentication code primary storage unit,
After forming the communication link for bidirectional communication, let the guidance information be transmitted to the external terminal,
During the measurement operation, the communication link is temporarily released with a command to start measurement of biological information as a trigger, and the communication link temporarily released after the measurement operation is completed,
Upon re-formation of the communication link, the temporarily stored authentication code is read from the authentication code primary storage unit, and mutual authentication is performed with an external terminal.
The biometric information measuring apparatus, wherein after the predetermined transmission / reception operation by the resumed communication link is completed, the communication operation is terminated and the stored authentication code is erased. The communication link is communication by Bluetooth (registered trademark),
  The biological information measuring device according to claim 1, wherein the authentication code is a PIN code based on Bluetooth (registered trademark). A measurement unit that measures biological information; a communication unit that transmits and receives data to and from an external terminal; and a control unit that controls the measurement operation of the measurement unit and the communication operation of the communication unit. A control method for a biological information measuring device that performs mutual authentication to form a communication link for two-way communication and transmits / receives data via the communication link,
The controller is
After performing communication link formation control of bidirectional communication by mutual authentication using an authentication code by the communication unit,
Operation control for starting measurement of the measurement unit,
Operation control for temporarily canceling the communication link by stopping communication of the communication unit to be performed before starting the measurement operation,
Operation control for resuming communication of the communication unit performed after the measurement operation is completed,
Perform each operation control in order,
In the formation control of the communication link,
Temporarily store the authentication code,
Read the temporarily stored authentication code after the end of the measurement operation,
Perform mutual authentication with the external terminal using the read authentication code,
In the operation control to resume,
Re-establish communication link by re-establishing bidirectional communication link with external terminal by mutual authentication,
After a predetermined transmission / reception operation by the resumed communication link is completed,
End communication operation,
A method for controlling a biological information measuring apparatus, comprising: deleting a stored authentication code.

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